From 01649561a8b4b77247bd234f240d737367bb8a52 Mon Sep 17 00:00:00 2001 From: James Smart Date: Sun, 12 Feb 2017 13:52:32 -0800 Subject: [PATCH] scsi: lpfc: NVME Initiator: bind to nvme_fc api NVME Initiator: Tie in to NVME Fabrics nvme_fc LLDD initiator api Adds the routines to: - register and deregister the FC port as a nvme-fc initiator localport - register and deregister remote FC ports as a nvme-fc remoteport - binding of nvme queues to adapter WQs - send/perform NVME LS's - send/perform NVME FCP initiator io operations Signed-off-by: Dick Kennedy Signed-off-by: James Smart Reviewed-by: Hannes Reinecke Signed-off-by: Martin K. Petersen --- drivers/scsi/lpfc/Makefile | 7 +- drivers/scsi/lpfc/lpfc.h | 5 + drivers/scsi/lpfc/lpfc_crtn.h | 10 + drivers/scsi/lpfc/lpfc_ct.c | 2 +- drivers/scsi/lpfc/lpfc_els.c | 4 +- drivers/scsi/lpfc/lpfc_hbadisc.c | 15 +- drivers/scsi/lpfc/lpfc_init.c | 39 +- drivers/scsi/lpfc/lpfc_nportdisc.c | 4 +- drivers/scsi/lpfc/lpfc_nvme.c | 2319 ++++++++++++++++++++++++++++ drivers/scsi/lpfc/lpfc_nvme.h | 6 + drivers/scsi/lpfc/lpfc_sli.c | 21 +- drivers/scsi/lpfc/lpfc_sli4.h | 1 + drivers/scsi/lpfc/lpfc_vport.c | 16 +- 13 files changed, 2411 insertions(+), 38 deletions(-) create mode 100644 drivers/scsi/lpfc/lpfc_nvme.c diff --git a/drivers/scsi/lpfc/Makefile b/drivers/scsi/lpfc/Makefile index e2516ba8ebfa..cd7e1fcf52c6 100644 --- a/drivers/scsi/lpfc/Makefile +++ b/drivers/scsi/lpfc/Makefile @@ -28,6 +28,7 @@ endif obj-$(CONFIG_SCSI_LPFC) := lpfc.o -lpfc-objs := lpfc_mem.o lpfc_sli.o lpfc_ct.o lpfc_els.o lpfc_hbadisc.o \ - lpfc_init.o lpfc_mbox.o lpfc_nportdisc.o lpfc_scsi.o lpfc_attr.o \ - lpfc_vport.o lpfc_debugfs.o lpfc_bsg.o +lpfc-objs := lpfc_mem.o lpfc_sli.o lpfc_ct.o lpfc_els.o \ + lpfc_hbadisc.o lpfc_init.o lpfc_mbox.o lpfc_nportdisc.o \ + lpfc_scsi.o lpfc_attr.o lpfc_vport.o lpfc_debugfs.o lpfc_bsg.o \ + lpfc_nvme.o diff --git a/drivers/scsi/lpfc/lpfc.h b/drivers/scsi/lpfc/lpfc.h index 81c47d1aebb2..9ad63a47425b 100644 --- a/drivers/scsi/lpfc/lpfc.h +++ b/drivers/scsi/lpfc/lpfc.h @@ -123,6 +123,11 @@ struct perf_prof { uint16_t wqidx[40]; }; +/* + * Provide for FC4 TYPE x28 - NVME. The + * bit mask for FCP and NVME is 0x8 identically + * because they are 32 bit positions distance. + */ #define LPFC_FC4_TYPE_BITMASK 0x00000100 /* Provide DMA memory definitions the driver uses per port instance. */ diff --git a/drivers/scsi/lpfc/lpfc_crtn.h b/drivers/scsi/lpfc/lpfc_crtn.h index 2e6345ebd6c5..a9c8a0a41b16 100644 --- a/drivers/scsi/lpfc/lpfc_crtn.h +++ b/drivers/scsi/lpfc/lpfc_crtn.h @@ -518,4 +518,14 @@ int lpfc_sli4_dump_page_a0(struct lpfc_hba *phba, struct lpfcMboxq *mbox); void lpfc_mbx_cmpl_rdp_page_a0(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb); /* NVME interfaces. */ +void lpfc_nvme_unregister_port(struct lpfc_vport *vport, + struct lpfc_nodelist *ndlp); +int lpfc_nvme_register_port(struct lpfc_vport *vport, + struct lpfc_nodelist *ndlp); +int lpfc_nvme_create_localport(struct lpfc_vport *vport); +void lpfc_nvme_destroy_localport(struct lpfc_vport *vport); +void lpfc_nvme_update_localport(struct lpfc_vport *vport); void lpfc_nvme_mod_param_dep(struct lpfc_hba *phba); +void lpfc_nvme_abort_fcreq_cmpl(struct lpfc_hba *phba, + struct lpfc_iocbq *cmdiocb, + struct lpfc_wcqe_complete *abts_cmpl); diff --git a/drivers/scsi/lpfc/lpfc_ct.c b/drivers/scsi/lpfc/lpfc_ct.c index afb25369bc3b..8cfeffe312e0 100644 --- a/drivers/scsi/lpfc/lpfc_ct.c +++ b/drivers/scsi/lpfc/lpfc_ct.c @@ -1412,7 +1412,7 @@ lpfc_ns_cmd(struct lpfc_vport *vport, int cmdcode, if (((phba->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || (phba->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) && (context == FC_TYPE_NVME)) { - /* todo: init: revise localport nvme attributes */ + lpfc_nvme_update_localport(vport); CtReq->un.rff.type_code = context; } else if (((phba->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c index e164eed25e3d..23546b3c950c 100644 --- a/drivers/scsi/lpfc/lpfc_els.c +++ b/drivers/scsi/lpfc/lpfc_els.c @@ -2618,7 +2618,9 @@ out: !(vport->fc_flag & FC_PT2PT_PLOGI)) { phba->pport->fc_myDID = 0; - /* todo: init: revise localport nvme attributes */ + if ((phba->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || + (phba->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) + lpfc_nvme_update_localport(phba->pport); mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (mbox) { diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c index 6e64c8e8e44f..8936f5d91c87 100644 --- a/drivers/scsi/lpfc/lpfc_hbadisc.c +++ b/drivers/scsi/lpfc/lpfc_hbadisc.c @@ -909,7 +909,9 @@ lpfc_linkdown(struct lpfc_hba *phba) vports[i]->fc_myDID = 0; - /* todo: init: revise localport nvme attributes */ + if ((phba->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || + (phba->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) + lpfc_nvme_update_localport(vports[i]); } } lpfc_destroy_vport_work_array(phba, vports); @@ -3580,7 +3582,9 @@ lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) spin_unlock_irq(shost->host_lock); vport->fc_myDID = 0; - /* todo: init: revise localport nvme attributes */ + if ((phba->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || + (phba->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) + lpfc_nvme_update_localport(vport); goto out; } @@ -3950,7 +3954,8 @@ out: if ((phba->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || (phba->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) - lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, FC_TYPE_NVME); + lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, + FC_TYPE_NVME); /* Issue SCR just before NameServer GID_FT Query */ lpfc_issue_els_scr(vport, SCR_DID, 0); @@ -4144,7 +4149,7 @@ lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, ((ndlp->nlp_fc4_type & NLP_FC4_NVME) || (ndlp->nlp_DID == Fabric_DID))) { vport->phba->nport_event_cnt++; - /* todo: init: unregister rport from nvme */ + lpfc_nvme_unregister_port(vport, ndlp); } } @@ -4169,7 +4174,7 @@ lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, * the register. */ vport->phba->nport_event_cnt++; - /* todo: init: register rport with nvme */ + lpfc_nvme_register_port(vport, ndlp); } } } diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c index e609afaa472a..474bafc63055 100644 --- a/drivers/scsi/lpfc/lpfc_init.c +++ b/drivers/scsi/lpfc/lpfc_init.c @@ -3128,7 +3128,6 @@ static void lpfc_scsi_free(struct lpfc_hba *phba) { struct lpfc_scsi_buf *sb, *sb_next; - struct lpfc_iocbq *io, *io_next; if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP)) return; @@ -3158,14 +3157,6 @@ lpfc_scsi_free(struct lpfc_hba *phba) phba->total_scsi_bufs--; } spin_unlock(&phba->scsi_buf_list_get_lock); - - /* Release all the lpfc_iocbq entries maintained by this host. */ - list_for_each_entry_safe(io, io_next, &phba->lpfc_iocb_list, list) { - list_del(&io->list); - kfree(io); - phba->total_iocbq_bufs--; - } - spin_unlock_irq(&phba->hbalock); } /** @@ -3180,7 +3171,6 @@ static void lpfc_nvme_free(struct lpfc_hba *phba) { struct lpfc_nvme_buf *lpfc_ncmd, *lpfc_ncmd_next; - struct lpfc_iocbq *io, *io_next; if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)) return; @@ -3209,14 +3199,6 @@ lpfc_nvme_free(struct lpfc_hba *phba) phba->total_nvme_bufs--; } spin_unlock(&phba->nvme_buf_list_get_lock); - - /* Release all the lpfc_iocbq entries maintained by this host. */ - list_for_each_entry_safe(io, io_next, &phba->lpfc_iocb_list, list) { - list_del(&io->list); - kfree(io); - phba->total_iocbq_bufs--; - } - spin_unlock_irq(&phba->hbalock); } /** @@ -10685,7 +10667,23 @@ lpfc_pci_probe_one_s4(struct pci_dev *pdev, const struct pci_device_id *pid) /* Perform post initialization setup */ lpfc_post_init_setup(phba); - /* todo: init: register port with nvme */ + /* NVME support in FW earlier in the driver load corrects the + * FC4 type making a check for nvme_support unnecessary. + */ + if ((phba->nvmet_support == 0) && + (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)) { + /* Create NVME binding with nvme_fc_transport. This + * ensures the vport is initialized. + */ + error = lpfc_nvme_create_localport(vport); + if (error) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "6004 NVME registration failed, " + "error x%x\n", + error); + goto out_disable_intr; + } + } /* check for firmware upgrade or downgrade */ if (phba->cfg_request_firmware_upgrade) @@ -10761,8 +10759,8 @@ lpfc_pci_remove_one_s4(struct pci_dev *pdev) /* Perform ndlp cleanup on the physical port. The nvme localport * is destroyed after to ensure all rports are io-disabled. */ + lpfc_nvme_destroy_localport(vport); lpfc_cleanup(vport); - /* todo: init: unregister port with nvme */ /* * Bring down the SLI Layer. This step disables all interrupts, @@ -10781,6 +10779,7 @@ lpfc_pci_remove_one_s4(struct pci_dev *pdev) */ lpfc_scsi_free(phba); lpfc_nvme_free(phba); + lpfc_free_iocb_list(phba); lpfc_sli4_driver_resource_unset(phba); diff --git a/drivers/scsi/lpfc/lpfc_nportdisc.c b/drivers/scsi/lpfc/lpfc_nportdisc.c index 65e7b2433ee7..470f9586192f 100644 --- a/drivers/scsi/lpfc/lpfc_nportdisc.c +++ b/drivers/scsi/lpfc/lpfc_nportdisc.c @@ -1655,9 +1655,7 @@ lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport, (phba->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) { ndlp->nlp_fc4_type |= NLP_FC4_NVME; /* We need to update the localport also */ - /* todo: init: revise localport nvme - * attributes - */ + lpfc_nvme_update_localport(vport); } } else if (ndlp->nlp_fc4_type == 0) { diff --git a/drivers/scsi/lpfc/lpfc_nvme.c b/drivers/scsi/lpfc/lpfc_nvme.c new file mode 100644 index 000000000000..729803dacf15 --- /dev/null +++ b/drivers/scsi/lpfc/lpfc_nvme.c @@ -0,0 +1,2319 @@ +/******************************************************************* + * This file is part of the Emulex Linux Device Driver for * + * Fibre Channel Host Bus Adapters. * + * Copyright (C) 2004-2016 Emulex. All rights reserved. * + * EMULEX and SLI are trademarks of Emulex. * + * www.emulex.com * + * Portions Copyright (C) 2004-2005 Christoph Hellwig * + * * + * This program is free software; you can redistribute it and/or * + * modify it under the terms of version 2 of the GNU General * + * Public License as published by the Free Software Foundation. * + * This program is distributed in the hope that it will be useful. * + * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * + * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * + * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * + * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * + * TO BE LEGALLY INVALID. See the GNU General Public License for * + * more details, a copy of which can be found in the file COPYING * + * included with this package. * + ********************************************************************/ +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include "lpfc_version.h" +#include "lpfc_hw4.h" +#include "lpfc_hw.h" +#include "lpfc_sli.h" +#include "lpfc_sli4.h" +#include "lpfc_nl.h" +#include "lpfc_disc.h" +#include "lpfc.h" +#include "lpfc_nvme.h" +#include "lpfc_scsi.h" +#include "lpfc_logmsg.h" +#include "lpfc_crtn.h" +#include "lpfc_vport.h" + +/* NVME initiator-based functions */ + +static struct lpfc_nvme_buf * +lpfc_get_nvme_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp); + +static void +lpfc_release_nvme_buf(struct lpfc_hba *, struct lpfc_nvme_buf *); + + +/** + * lpfc_nvme_create_queue - + * @lpfc_pnvme: Pointer to the driver's nvme instance data + * @qidx: An cpu index used to affinitize IO queues and MSIX vectors. + * @handle: An opaque driver handle used in follow-up calls. + * + * Driver registers this routine to preallocate and initialize any + * internal data structures to bind the @qidx to its internal IO queues. + * A hardware queue maps (qidx) to a specific driver MSI-X vector/EQ/CQ/WQ. + * + * Return value : + * 0 - Success + * -EINVAL - Unsupported input value. + * -ENOMEM - Could not alloc necessary memory + **/ +static int +lpfc_nvme_create_queue(struct nvme_fc_local_port *pnvme_lport, + unsigned int qidx, u16 qsize, + void **handle) +{ + struct lpfc_nvme_lport *lport; + struct lpfc_vport *vport; + struct lpfc_nvme_qhandle *qhandle; + char *str; + + lport = (struct lpfc_nvme_lport *)pnvme_lport->private; + vport = lport->vport; + qhandle = kzalloc(sizeof(struct lpfc_nvme_qhandle), GFP_KERNEL); + if (qhandle == NULL) + return -ENOMEM; + + qhandle->cpu_id = smp_processor_id(); + qhandle->qidx = qidx; + /* + * NVME qidx == 0 is the admin queue, so both admin queue + * and first IO queue will use MSI-X vector and associated + * EQ/CQ/WQ at index 0. After that they are sequentially assigned. + */ + if (qidx) { + str = "IO "; /* IO queue */ + qhandle->index = ((qidx - 1) % + vport->phba->cfg_nvme_io_channel); + } else { + str = "ADM"; /* Admin queue */ + qhandle->index = qidx; + } + + lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME, + "6073 Binding %s HdwQueue %d (cpu %d) to " + "io_channel %d qhandle %p\n", str, + qidx, qhandle->cpu_id, qhandle->index, qhandle); + *handle = (void *)qhandle; + return 0; +} + +/** + * lpfc_nvme_delete_queue - + * @lpfc_pnvme: Pointer to the driver's nvme instance data + * @qidx: An cpu index used to affinitize IO queues and MSIX vectors. + * @handle: An opaque driver handle from lpfc_nvme_create_queue + * + * Driver registers this routine to free + * any internal data structures to bind the @qidx to its internal + * IO queues. + * + * Return value : + * 0 - Success + * TODO: What are the failure codes. + **/ +static void +lpfc_nvme_delete_queue(struct nvme_fc_local_port *pnvme_lport, + unsigned int qidx, + void *handle) +{ + struct lpfc_nvme_lport *lport; + struct lpfc_vport *vport; + + lport = (struct lpfc_nvme_lport *)pnvme_lport->private; + vport = lport->vport; + + lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME, + "6001 ENTER. lpfc_pnvme %p, qidx x%xi qhandle %p\n", + lport, qidx, handle); + kfree(handle); +} + +static void +lpfc_nvme_localport_delete(struct nvme_fc_local_port *localport) +{ + struct lpfc_nvme_lport *lport = localport->private; + + /* release any threads waiting for the unreg to complete */ + complete(&lport->lport_unreg_done); +} + +/* lpfc_nvme_remoteport_delete + * + * @remoteport: Pointer to an nvme transport remoteport instance. + * + * This is a template downcall. NVME transport calls this function + * when it has completed the unregistration of a previously + * registered remoteport. + * + * Return value : + * None + */ +void +lpfc_nvme_remoteport_delete(struct nvme_fc_remote_port *remoteport) +{ + struct lpfc_nvme_rport *rport = remoteport->private; + struct lpfc_vport *vport; + struct lpfc_nodelist *ndlp; + + ndlp = rport->ndlp; + if (!ndlp) + goto rport_err; + + vport = ndlp->vport; + if (!vport) + goto rport_err; + + /* Remove this rport from the lport's list - memory is owned by the + * transport. Remove the ndlp reference for the NVME transport before + * calling state machine to remove the node, this is devloss = 0 + * semantics. + */ + lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, + "6146 remoteport delete complete %p\n", + remoteport); + list_del(&rport->list); + lpfc_nlp_put(ndlp); + + rport_err: + /* This call has to execute as long as the rport is valid. + * Release any threads waiting for the unreg to complete. + */ + complete(&rport->rport_unreg_done); +} + +static void +lpfc_nvme_cmpl_gen_req(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe, + struct lpfc_wcqe_complete *wcqe) +{ + struct lpfc_vport *vport = cmdwqe->vport; + uint32_t status; + struct nvmefc_ls_req *pnvme_lsreq; + struct lpfc_dmabuf *buf_ptr; + struct lpfc_nodelist *ndlp; + + vport->phba->fc4NvmeLsCmpls++; + + pnvme_lsreq = (struct nvmefc_ls_req *)cmdwqe->context2; + status = bf_get(lpfc_wcqe_c_status, wcqe) & LPFC_IOCB_STATUS_MASK; + ndlp = (struct lpfc_nodelist *)cmdwqe->context1; + lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, + "6047 nvme cmpl Enter " + "Data %p DID %x Xri: %x status %x cmd:%p lsreg:%p " + "bmp:%p ndlp:%p\n", + pnvme_lsreq, ndlp ? ndlp->nlp_DID : 0, + cmdwqe->sli4_xritag, status, + cmdwqe, pnvme_lsreq, cmdwqe->context3, ndlp); + + if (cmdwqe->context3) { + buf_ptr = (struct lpfc_dmabuf *)cmdwqe->context3; + lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys); + kfree(buf_ptr); + cmdwqe->context3 = NULL; + } + if (pnvme_lsreq->done) + pnvme_lsreq->done(pnvme_lsreq, status); + else + lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC, + "6046 nvme cmpl without done call back? " + "Data %p DID %x Xri: %x status %x\n", + pnvme_lsreq, ndlp ? ndlp->nlp_DID : 0, + cmdwqe->sli4_xritag, status); + if (ndlp) { + lpfc_nlp_put(ndlp); + cmdwqe->context1 = NULL; + } + lpfc_sli_release_iocbq(phba, cmdwqe); +} + +static int +lpfc_nvme_gen_req(struct lpfc_vport *vport, struct lpfc_dmabuf *bmp, + struct lpfc_dmabuf *inp, + struct nvmefc_ls_req *pnvme_lsreq, + void (*cmpl)(struct lpfc_hba *, struct lpfc_iocbq *, + struct lpfc_wcqe_complete *), + struct lpfc_nodelist *ndlp, uint32_t num_entry, + uint32_t tmo, uint8_t retry) +{ + struct lpfc_hba *phba = vport->phba; + union lpfc_wqe *wqe; + struct lpfc_iocbq *genwqe; + struct ulp_bde64 *bpl; + struct ulp_bde64 bde; + int i, rc, xmit_len, first_len; + + /* Allocate buffer for command WQE */ + genwqe = lpfc_sli_get_iocbq(phba); + if (genwqe == NULL) + return 1; + + wqe = &genwqe->wqe; + memset(wqe, 0, sizeof(union lpfc_wqe)); + + genwqe->context3 = (uint8_t *)bmp; + genwqe->iocb_flag |= LPFC_IO_NVME_LS; + + /* Save for completion so we can release these resources */ + genwqe->context1 = lpfc_nlp_get(ndlp); + genwqe->context2 = (uint8_t *)pnvme_lsreq; + /* Fill in payload, bp points to frame payload */ + + if (!tmo) + /* FC spec states we need 3 * ratov for CT requests */ + tmo = (3 * phba->fc_ratov); + + /* For this command calculate the xmit length of the request bde. */ + xmit_len = 0; + first_len = 0; + bpl = (struct ulp_bde64 *)bmp->virt; + for (i = 0; i < num_entry; i++) { + bde.tus.w = bpl[i].tus.w; + if (bde.tus.f.bdeFlags != BUFF_TYPE_BDE_64) + break; + xmit_len += bde.tus.f.bdeSize; + if (i == 0) + first_len = xmit_len; + } + + genwqe->rsvd2 = num_entry; + genwqe->hba_wqidx = 0; + + /* Words 0 - 2 */ + wqe->generic.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64; + wqe->generic.bde.tus.f.bdeSize = first_len; + wqe->generic.bde.addrLow = bpl[0].addrLow; + wqe->generic.bde.addrHigh = bpl[0].addrHigh; + + /* Word 3 */ + wqe->gen_req.request_payload_len = first_len; + + /* Word 4 */ + + /* Word 5 */ + bf_set(wqe_dfctl, &wqe->gen_req.wge_ctl, 0); + bf_set(wqe_si, &wqe->gen_req.wge_ctl, 1); + bf_set(wqe_la, &wqe->gen_req.wge_ctl, 1); + bf_set(wqe_rctl, &wqe->gen_req.wge_ctl, FC_RCTL_DD_UNSOL_CTL); + bf_set(wqe_type, &wqe->gen_req.wge_ctl, FC_TYPE_NVME); + + /* Word 6 */ + bf_set(wqe_ctxt_tag, &wqe->gen_req.wqe_com, + phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); + bf_set(wqe_xri_tag, &wqe->gen_req.wqe_com, genwqe->sli4_xritag); + + /* Word 7 */ + bf_set(wqe_tmo, &wqe->gen_req.wqe_com, (vport->phba->fc_ratov-1)); + bf_set(wqe_class, &wqe->gen_req.wqe_com, CLASS3); + bf_set(wqe_cmnd, &wqe->gen_req.wqe_com, CMD_GEN_REQUEST64_WQE); + bf_set(wqe_ct, &wqe->gen_req.wqe_com, SLI4_CT_RPI); + + /* Word 8 */ + wqe->gen_req.wqe_com.abort_tag = genwqe->iotag; + + /* Word 9 */ + bf_set(wqe_reqtag, &wqe->gen_req.wqe_com, genwqe->iotag); + + /* Word 10 */ + bf_set(wqe_dbde, &wqe->gen_req.wqe_com, 1); + bf_set(wqe_iod, &wqe->gen_req.wqe_com, LPFC_WQE_IOD_READ); + bf_set(wqe_qosd, &wqe->gen_req.wqe_com, 1); + bf_set(wqe_lenloc, &wqe->gen_req.wqe_com, LPFC_WQE_LENLOC_NONE); + bf_set(wqe_ebde_cnt, &wqe->gen_req.wqe_com, 0); + + /* Word 11 */ + bf_set(wqe_cqid, &wqe->gen_req.wqe_com, LPFC_WQE_CQ_ID_DEFAULT); + bf_set(wqe_cmd_type, &wqe->gen_req.wqe_com, OTHER_COMMAND); + + + /* Issue GEN REQ WQE for NPORT */ + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "6050 Issue GEN REQ WQE to NPORT x%x " + "Data: x%x x%x wq:%p lsreq:%p bmp:%p xmit:%d 1st:%d\n", + ndlp->nlp_DID, genwqe->iotag, + vport->port_state, + genwqe, pnvme_lsreq, bmp, xmit_len, first_len); + genwqe->wqe_cmpl = cmpl; + genwqe->iocb_cmpl = NULL; + genwqe->drvrTimeout = tmo + LPFC_DRVR_TIMEOUT; + genwqe->vport = vport; + genwqe->retry = retry; + + rc = lpfc_sli4_issue_wqe(phba, LPFC_ELS_RING, genwqe); + if (rc == WQE_ERROR) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, + "6045 Issue GEN REQ WQE to NPORT x%x " + "Data: x%x x%x\n", + ndlp->nlp_DID, genwqe->iotag, + vport->port_state); + lpfc_sli_release_iocbq(phba, genwqe); + return 1; + } + return 0; +} + +/** + * lpfc_nvme_ls_req - Issue an Link Service request + * @lpfc_pnvme: Pointer to the driver's nvme instance data + * @lpfc_nvme_lport: Pointer to the driver's local port data + * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq + * + * Driver registers this routine to handle any link service request + * from the nvme_fc transport to a remote nvme-aware port. + * + * Return value : + * 0 - Success + * TODO: What are the failure codes. + **/ +static int +lpfc_nvme_ls_req(struct nvme_fc_local_port *pnvme_lport, + struct nvme_fc_remote_port *pnvme_rport, + struct nvmefc_ls_req *pnvme_lsreq) +{ + int ret = 0; + struct lpfc_nvme_lport *lport; + struct lpfc_vport *vport; + struct lpfc_nodelist *ndlp; + struct ulp_bde64 *bpl; + struct lpfc_dmabuf *bmp; + + /* there are two dma buf in the request, actually there is one and + * the second one is just the start address + cmd size. + * Before calling lpfc_nvme_gen_req these buffers need to be wrapped + * in a lpfc_dmabuf struct. When freeing we just free the wrapper + * because the nvem layer owns the data bufs. + * We do not have to break these packets open, we don't care what is in + * them. And we do not have to look at the resonse data, we only care + * that we got a response. All of the caring is going to happen in the + * nvme-fc layer. + */ + + lport = (struct lpfc_nvme_lport *)pnvme_lport->private; + vport = lport->vport; + + ndlp = lpfc_findnode_did(vport, pnvme_rport->port_id); + if (!ndlp) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC, + "6043 Could not find node for DID %x\n", + pnvme_rport->port_id); + return 1; + } + bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); + if (!bmp) { + + lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC, + "6044 Could not find node for DID %x\n", + pnvme_rport->port_id); + return 2; + } + INIT_LIST_HEAD(&bmp->list); + bmp->virt = lpfc_mbuf_alloc(vport->phba, MEM_PRI, &(bmp->phys)); + if (!bmp->virt) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC, + "6042 Could not find node for DID %x\n", + pnvme_rport->port_id); + kfree(bmp); + return 3; + } + bpl = (struct ulp_bde64 *)bmp->virt; + bpl->addrHigh = le32_to_cpu(putPaddrHigh(pnvme_lsreq->rqstdma)); + bpl->addrLow = le32_to_cpu(putPaddrLow(pnvme_lsreq->rqstdma)); + bpl->tus.f.bdeFlags = 0; + bpl->tus.f.bdeSize = pnvme_lsreq->rqstlen; + bpl->tus.w = le32_to_cpu(bpl->tus.w); + bpl++; + + bpl->addrHigh = le32_to_cpu(putPaddrHigh(pnvme_lsreq->rspdma)); + bpl->addrLow = le32_to_cpu(putPaddrLow(pnvme_lsreq->rspdma)); + bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; + bpl->tus.f.bdeSize = pnvme_lsreq->rsplen; + bpl->tus.w = le32_to_cpu(bpl->tus.w); + + /* Expand print to include key fields. */ + lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, + "6051 ENTER. lport %p, rport %p lsreq%p rqstlen:%d " + "rsplen:%d %llux %llux\n", + pnvme_lport, pnvme_rport, + pnvme_lsreq, pnvme_lsreq->rqstlen, + pnvme_lsreq->rsplen, pnvme_lsreq->rqstdma, + pnvme_lsreq->rspdma); + + vport->phba->fc4NvmeLsRequests++; + + /* Hardcode the wait to 30 seconds. Connections are failing otherwise. + * This code allows it all to work. + */ + ret = lpfc_nvme_gen_req(vport, bmp, pnvme_lsreq->rqstaddr, + pnvme_lsreq, lpfc_nvme_cmpl_gen_req, + ndlp, 2, 30, 0); + if (ret != WQE_SUCCESS) { + lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, + "6052 EXIT. issue ls wqe failed lport %p, " + "rport %p lsreq%p Status %x DID %x\n", + pnvme_lport, pnvme_rport, pnvme_lsreq, + ret, ndlp->nlp_DID); + lpfc_mbuf_free(vport->phba, bmp->virt, bmp->phys); + kfree(bmp); + return ret; + } + + /* Stub in routine and return 0 for now. */ + return ret; +} + +/** + * lpfc_nvme_ls_abort - Issue an Link Service request + * @lpfc_pnvme: Pointer to the driver's nvme instance data + * @lpfc_nvme_lport: Pointer to the driver's local port data + * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq + * + * Driver registers this routine to handle any link service request + * from the nvme_fc transport to a remote nvme-aware port. + * + * Return value : + * 0 - Success + * TODO: What are the failure codes. + **/ +static void +lpfc_nvme_ls_abort(struct nvme_fc_local_port *pnvme_lport, + struct nvme_fc_remote_port *pnvme_rport, + struct nvmefc_ls_req *pnvme_lsreq) +{ + struct lpfc_nvme_lport *lport; + struct lpfc_vport *vport; + struct lpfc_hba *phba; + struct lpfc_nodelist *ndlp; + LIST_HEAD(abort_list); + struct lpfc_sli_ring *pring; + struct lpfc_iocbq *wqe, *next_wqe; + + lport = (struct lpfc_nvme_lport *)pnvme_lport->private; + vport = lport->vport; + phba = vport->phba; + + ndlp = lpfc_findnode_did(vport, pnvme_rport->port_id); + if (!ndlp) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS, + "6049 Could not find node for DID %x\n", + pnvme_rport->port_id); + return; + } + + /* Expand print to include key fields. */ + lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS, + "6040 ENTER. lport %p, rport %p lsreq %p rqstlen:%d " + "rsplen:%d %llux %llux\n", + pnvme_lport, pnvme_rport, + pnvme_lsreq, pnvme_lsreq->rqstlen, + pnvme_lsreq->rsplen, pnvme_lsreq->rqstdma, + pnvme_lsreq->rspdma); + + /* + * Lock the ELS ring txcmplq and build a local list of all ELS IOs + * that need an ABTS. The IOs need to stay on the txcmplq so that + * the abort operation completes them successfully. + */ + pring = phba->sli4_hba.nvmels_wq->pring; + spin_lock_irq(&phba->hbalock); + spin_lock(&pring->ring_lock); + list_for_each_entry_safe(wqe, next_wqe, &pring->txcmplq, list) { + /* Add to abort_list on on NDLP match. */ + if (lpfc_check_sli_ndlp(phba, pring, wqe, ndlp)) { + wqe->iocb_flag |= LPFC_DRIVER_ABORTED; + list_add_tail(&wqe->dlist, &abort_list); + } + } + spin_unlock(&pring->ring_lock); + spin_unlock_irq(&phba->hbalock); + + /* Abort the targeted IOs and remove them from the abort list. */ + list_for_each_entry_safe(wqe, next_wqe, &abort_list, dlist) { + spin_lock_irq(&phba->hbalock); + list_del_init(&wqe->dlist); + lpfc_sli_issue_abort_iotag(phba, pring, wqe); + spin_unlock_irq(&phba->hbalock); + } +} + +/* Fix up the existing sgls for NVME IO. */ +static void +lpfc_nvme_adj_fcp_sgls(struct lpfc_vport *vport, + struct lpfc_nvme_buf *lpfc_ncmd, + struct nvmefc_fcp_req *nCmd) +{ + struct sli4_sge *sgl; + union lpfc_wqe128 *wqe; + uint32_t *wptr, *dptr; + + /* + * Adjust the FCP_CMD and FCP_RSP DMA data and sge_len to + * match NVME. NVME sends 96 bytes. Also, use the + * nvme commands command and response dma addresses + * rather than the virtual memory to ease the restore + * operation. + */ + sgl = lpfc_ncmd->nvme_sgl; + sgl->sge_len = cpu_to_le32(nCmd->cmdlen); + + sgl++; + + /* Setup the physical region for the FCP RSP */ + sgl->addr_hi = cpu_to_le32(putPaddrHigh(nCmd->rspdma)); + sgl->addr_lo = cpu_to_le32(putPaddrLow(nCmd->rspdma)); + sgl->word2 = le32_to_cpu(sgl->word2); + if (nCmd->sg_cnt) + bf_set(lpfc_sli4_sge_last, sgl, 0); + else + bf_set(lpfc_sli4_sge_last, sgl, 1); + sgl->word2 = cpu_to_le32(sgl->word2); + sgl->sge_len = cpu_to_le32(nCmd->rsplen); + + /* + * Get a local pointer to the built-in wqe and correct + * the cmd size to match NVME's 96 bytes and fix + * the dma address. + */ + + /* 128 byte wqe support here */ + wqe = (union lpfc_wqe128 *)&lpfc_ncmd->cur_iocbq.wqe; + + /* Word 0-2 - NVME CMND IU (embedded payload) */ + wqe->generic.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_IMMED; + wqe->generic.bde.tus.f.bdeSize = 60; + wqe->generic.bde.addrHigh = 0; + wqe->generic.bde.addrLow = 64; /* Word 16 */ + + /* Word 3 */ + bf_set(payload_offset_len, &wqe->fcp_icmd, + (nCmd->rsplen + nCmd->cmdlen)); + + /* Word 10 */ + bf_set(wqe_nvme, &wqe->fcp_icmd.wqe_com, 1); + bf_set(wqe_wqes, &wqe->fcp_icmd.wqe_com, 1); + + /* + * Embed the payload in the last half of the WQE + * WQE words 16-30 get the NVME CMD IU payload + * + * WQE Word 16 is already setup with flags + * WQE words 17-19 get payload Words 2-4 + * WQE words 20-21 get payload Words 6-7 + * WQE words 22-29 get payload Words 16-23 + */ + wptr = &wqe->words[17]; /* WQE ptr */ + dptr = (uint32_t *)nCmd->cmdaddr; /* payload ptr */ + dptr += 2; /* Skip Words 0-1 in payload */ + + *wptr++ = *dptr++; /* Word 2 */ + *wptr++ = *dptr++; /* Word 3 */ + *wptr++ = *dptr++; /* Word 4 */ + dptr++; /* Skip Word 5 in payload */ + *wptr++ = *dptr++; /* Word 6 */ + *wptr++ = *dptr++; /* Word 7 */ + dptr += 8; /* Skip Words 8-15 in payload */ + *wptr++ = *dptr++; /* Word 16 */ + *wptr++ = *dptr++; /* Word 17 */ + *wptr++ = *dptr++; /* Word 18 */ + *wptr++ = *dptr++; /* Word 19 */ + *wptr++ = *dptr++; /* Word 20 */ + *wptr++ = *dptr++; /* Word 21 */ + *wptr++ = *dptr++; /* Word 22 */ + *wptr = *dptr; /* Word 23 */ +} + +/** + * lpfc_nvme_io_cmd_wqe_cmpl - Complete an NVME-over-FCP IO + * @lpfc_pnvme: Pointer to the driver's nvme instance data + * @lpfc_nvme_lport: Pointer to the driver's local port data + * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq + * + * Driver registers this routine as it io request handler. This + * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq + * data structure to the rport indicated in @lpfc_nvme_rport. + * + * Return value : + * 0 - Success + * TODO: What are the failure codes. + **/ +static void +lpfc_nvme_io_cmd_wqe_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn, + struct lpfc_wcqe_complete *wcqe) +{ + struct lpfc_nvme_buf *lpfc_ncmd = + (struct lpfc_nvme_buf *)pwqeIn->context1; + struct lpfc_vport *vport = pwqeIn->vport; + struct nvmefc_fcp_req *nCmd; + struct nvme_fc_ersp_iu *ep; + struct nvme_fc_cmd_iu *cp; + struct lpfc_nvme_rport *rport; + struct lpfc_nodelist *ndlp; + unsigned long flags; + uint32_t code; + uint16_t cid, sqhd, data; + uint32_t *ptr; + + /* Sanity check on return of outstanding command */ + if (!lpfc_ncmd || !lpfc_ncmd->nvmeCmd || !lpfc_ncmd->nrport) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE | LOG_NVME_IOERR, + "6071 Completion pointers bad on wqe %p.\n", + wcqe); + return; + } + phba->fc4NvmeIoCmpls++; + + nCmd = lpfc_ncmd->nvmeCmd; + rport = lpfc_ncmd->nrport; + + /* + * Catch race where our node has transitioned, but the + * transport is still transitioning. + */ + ndlp = rport->ndlp; + if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE | LOG_NVME_IOERR, + "6061 rport %p, ndlp %p, DID x%06x ndlp " + "not ready.\n", + rport, ndlp, rport->remoteport->port_id); + + ndlp = lpfc_findnode_did(vport, rport->remoteport->port_id); + if (!ndlp) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_IOERR, + "6062 Ignoring NVME cmpl. No ndlp\n"); + goto out_err; + } + } + + code = bf_get(lpfc_wcqe_c_code, wcqe); + if (code == CQE_CODE_NVME_ERSP) { + /* For this type of CQE, we need to rebuild the rsp */ + ep = (struct nvme_fc_ersp_iu *)nCmd->rspaddr; + + /* + * Get Command Id from cmd to plug into response. This + * code is not needed in the next NVME Transport drop. + */ + cp = (struct nvme_fc_cmd_iu *)nCmd->cmdaddr; + cid = cp->sqe.common.command_id; + + /* + * RSN is in CQE word 2 + * SQHD is in CQE Word 3 bits 15:0 + * Cmd Specific info is in CQE Word 1 + * and in CQE Word 0 bits 15:0 + */ + sqhd = bf_get(lpfc_wcqe_c_sqhead, wcqe); + + /* Now lets build the NVME ERSP IU */ + ep->iu_len = cpu_to_be16(8); + ep->rsn = wcqe->parameter; + ep->xfrd_len = cpu_to_be32(nCmd->payload_length); + ep->rsvd12 = 0; + ptr = (uint32_t *)&ep->cqe.result.u64; + *ptr++ = wcqe->total_data_placed; + data = bf_get(lpfc_wcqe_c_ersp0, wcqe); + *ptr = (uint32_t)data; + ep->cqe.sq_head = sqhd; + ep->cqe.sq_id = nCmd->sqid; + ep->cqe.command_id = cid; + ep->cqe.status = 0; + + lpfc_ncmd->status = IOSTAT_SUCCESS; + lpfc_ncmd->result = 0; + nCmd->rcv_rsplen = LPFC_NVME_ERSP_LEN; + nCmd->transferred_length = nCmd->payload_length; + } else { + lpfc_ncmd->status = (bf_get(lpfc_wcqe_c_status, wcqe) & + LPFC_IOCB_STATUS_MASK); + lpfc_ncmd->result = wcqe->parameter; + + /* For NVME, the only failure path that results in an + * IO error is when the adapter rejects it. All other + * conditions are a success case and resolved by the + * transport. + * IOSTAT_FCP_RSP_ERROR means: + * 1. Length of data received doesn't match total + * transfer length in WQE + * 2. If the RSP payload does NOT match these cases: + * a. RSP length 12/24 bytes and all zeros + * b. NVME ERSP + */ + switch (lpfc_ncmd->status) { + case IOSTAT_SUCCESS: + nCmd->transferred_length = wcqe->total_data_placed; + nCmd->rcv_rsplen = 0; + nCmd->status = 0; + break; + case IOSTAT_FCP_RSP_ERROR: + nCmd->transferred_length = wcqe->total_data_placed; + nCmd->rcv_rsplen = wcqe->parameter; + nCmd->status = 0; + /* Sanity check */ + if (nCmd->rcv_rsplen == LPFC_NVME_ERSP_LEN) + break; + lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_IOERR, + "6081 NVME Completion Protocol Error: " + "status x%x result x%x placed x%x\n", + lpfc_ncmd->status, lpfc_ncmd->result, + wcqe->total_data_placed); + break; + default: +out_err: + lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_IOERR, + "6072 NVME Completion Error: " + "status x%x result x%x placed x%x\n", + lpfc_ncmd->status, lpfc_ncmd->result, + wcqe->total_data_placed); + nCmd->transferred_length = 0; + nCmd->rcv_rsplen = 0; + nCmd->status = NVME_SC_FC_TRANSPORT_ERROR; + } + } + + /* pick up SLI4 exhange busy condition */ + if (bf_get(lpfc_wcqe_c_xb, wcqe)) + lpfc_ncmd->flags |= LPFC_SBUF_XBUSY; + else + lpfc_ncmd->flags &= ~LPFC_SBUF_XBUSY; + + if (ndlp && NLP_CHK_NODE_ACT(ndlp)) + atomic_dec(&ndlp->cmd_pending); + + /* Update stats and complete the IO. There is + * no need for dma unprep because the nvme_transport + * owns the dma address. + */ + nCmd->done(nCmd); + + spin_lock_irqsave(&phba->hbalock, flags); + lpfc_ncmd->nrport = NULL; + spin_unlock_irqrestore(&phba->hbalock, flags); + + lpfc_release_nvme_buf(phba, lpfc_ncmd); +} + + +/** + * lpfc_nvme_prep_io_cmd - Issue an NVME-over-FCP IO + * @lpfc_pnvme: Pointer to the driver's nvme instance data + * @lpfc_nvme_lport: Pointer to the driver's local port data + * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq + * @lpfc_nvme_fcreq: IO request from nvme fc to driver. + * @hw_queue_handle: Driver-returned handle in lpfc_nvme_create_queue + * + * Driver registers this routine as it io request handler. This + * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq + * data structure to the rport indicated in @lpfc_nvme_rport. + * + * Return value : + * 0 - Success + * TODO: What are the failure codes. + **/ +static int +lpfc_nvme_prep_io_cmd(struct lpfc_vport *vport, + struct lpfc_nvme_buf *lpfc_ncmd, + struct lpfc_nodelist *pnode) +{ + struct lpfc_hba *phba = vport->phba; + struct nvmefc_fcp_req *nCmd = lpfc_ncmd->nvmeCmd; + struct lpfc_iocbq *pwqeq = &(lpfc_ncmd->cur_iocbq); + union lpfc_wqe128 *wqe = (union lpfc_wqe128 *)&pwqeq->wqe; + uint32_t req_len; + + if (!pnode || !NLP_CHK_NODE_ACT(pnode)) + return -EINVAL; + + /* + * There are three possibilities here - use scatter-gather segment, use + * the single mapping, or neither. + */ + wqe->fcp_iwrite.initial_xfer_len = 0; + if (nCmd->sg_cnt) { + if (nCmd->io_dir == NVMEFC_FCP_WRITE) { + /* Word 5 */ + if ((phba->cfg_nvme_enable_fb) && + (pnode->nlp_flag & NLP_FIRSTBURST)) { + req_len = lpfc_ncmd->nvmeCmd->payload_length; + if (req_len < pnode->nvme_fb_size) + wqe->fcp_iwrite.initial_xfer_len = + req_len; + else + wqe->fcp_iwrite.initial_xfer_len = + pnode->nvme_fb_size; + } + + /* Word 7 */ + bf_set(wqe_cmnd, &wqe->generic.wqe_com, + CMD_FCP_IWRITE64_WQE); + bf_set(wqe_pu, &wqe->generic.wqe_com, + PARM_READ_CHECK); + + /* Word 10 */ + bf_set(wqe_qosd, &wqe->fcp_iwrite.wqe_com, 0); + bf_set(wqe_iod, &wqe->fcp_iwrite.wqe_com, + LPFC_WQE_IOD_WRITE); + bf_set(wqe_lenloc, &wqe->fcp_iwrite.wqe_com, + LPFC_WQE_LENLOC_WORD4); + if (phba->cfg_nvme_oas) + bf_set(wqe_oas, &wqe->fcp_iwrite.wqe_com, 1); + + /* Word 11 */ + bf_set(wqe_cmd_type, &wqe->generic.wqe_com, + NVME_WRITE_CMD); + + /* Word 16 */ + wqe->words[16] = LPFC_NVME_EMBED_WRITE; + + phba->fc4NvmeOutputRequests++; + } else { + /* Word 7 */ + bf_set(wqe_cmnd, &wqe->generic.wqe_com, + CMD_FCP_IREAD64_WQE); + bf_set(wqe_pu, &wqe->generic.wqe_com, + PARM_READ_CHECK); + + /* Word 10 */ + bf_set(wqe_qosd, &wqe->fcp_iread.wqe_com, 0); + bf_set(wqe_iod, &wqe->fcp_iread.wqe_com, + LPFC_WQE_IOD_READ); + bf_set(wqe_lenloc, &wqe->fcp_iread.wqe_com, + LPFC_WQE_LENLOC_WORD4); + if (phba->cfg_nvme_oas) + bf_set(wqe_oas, &wqe->fcp_iread.wqe_com, 1); + + /* Word 11 */ + bf_set(wqe_cmd_type, &wqe->generic.wqe_com, + NVME_READ_CMD); + + /* Word 16 */ + wqe->words[16] = LPFC_NVME_EMBED_READ; + + phba->fc4NvmeInputRequests++; + } + } else { + /* Word 4 */ + wqe->fcp_icmd.rsrvd4 = 0; + + /* Word 7 */ + bf_set(wqe_cmnd, &wqe->generic.wqe_com, CMD_FCP_ICMND64_WQE); + bf_set(wqe_pu, &wqe->generic.wqe_com, 0); + + /* Word 10 */ + bf_set(wqe_qosd, &wqe->fcp_icmd.wqe_com, 1); + bf_set(wqe_iod, &wqe->fcp_icmd.wqe_com, LPFC_WQE_IOD_WRITE); + bf_set(wqe_lenloc, &wqe->fcp_icmd.wqe_com, + LPFC_WQE_LENLOC_NONE); + if (phba->cfg_nvme_oas) + bf_set(wqe_oas, &wqe->fcp_icmd.wqe_com, 1); + + /* Word 11 */ + bf_set(wqe_cmd_type, &wqe->generic.wqe_com, NVME_READ_CMD); + + /* Word 16 */ + wqe->words[16] = LPFC_NVME_EMBED_CMD; + + phba->fc4NvmeControlRequests++; + } + /* + * Finish initializing those WQE fields that are independent + * of the nvme_cmnd request_buffer + */ + + /* Word 6 */ + bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, + phba->sli4_hba.rpi_ids[pnode->nlp_rpi]); + bf_set(wqe_xri_tag, &wqe->generic.wqe_com, pwqeq->sli4_xritag); + + /* Word 7 */ + /* Preserve Class data in the ndlp. */ + bf_set(wqe_class, &wqe->generic.wqe_com, + (pnode->nlp_fcp_info & 0x0f)); + + /* Word 8 */ + wqe->generic.wqe_com.abort_tag = pwqeq->iotag; + + /* Word 9 */ + bf_set(wqe_reqtag, &wqe->generic.wqe_com, pwqeq->iotag); + + /* Word 11 */ + bf_set(wqe_cqid, &wqe->generic.wqe_com, LPFC_WQE_CQ_ID_DEFAULT); + + pwqeq->vport = vport; + return 0; +} + + +/** + * lpfc_nvme_prep_io_dma - Issue an NVME-over-FCP IO + * @lpfc_pnvme: Pointer to the driver's nvme instance data + * @lpfc_nvme_lport: Pointer to the driver's local port data + * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq + * @lpfc_nvme_fcreq: IO request from nvme fc to driver. + * @hw_queue_handle: Driver-returned handle in lpfc_nvme_create_queue + * + * Driver registers this routine as it io request handler. This + * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq + * data structure to the rport indicated in @lpfc_nvme_rport. + * + * Return value : + * 0 - Success + * TODO: What are the failure codes. + **/ +static int +lpfc_nvme_prep_io_dma(struct lpfc_vport *vport, + struct lpfc_nvme_buf *lpfc_ncmd) +{ + struct lpfc_hba *phba = vport->phba; + struct nvmefc_fcp_req *nCmd = lpfc_ncmd->nvmeCmd; + union lpfc_wqe128 *wqe = (union lpfc_wqe128 *)&lpfc_ncmd->cur_iocbq.wqe; + struct sli4_sge *sgl = lpfc_ncmd->nvme_sgl; + struct scatterlist *data_sg; + struct sli4_sge *first_data_sgl; + dma_addr_t physaddr; + uint32_t num_bde = 0; + uint32_t dma_len; + uint32_t dma_offset = 0; + int nseg, i; + + /* Fix up the command and response DMA stuff. */ + lpfc_nvme_adj_fcp_sgls(vport, lpfc_ncmd, nCmd); + + /* + * There are three possibilities here - use scatter-gather segment, use + * the single mapping, or neither. + */ + if (nCmd->sg_cnt) { + /* + * Jump over the cmd and rsp SGEs. The fix routine + * has already adjusted for this. + */ + sgl += 2; + + first_data_sgl = sgl; + lpfc_ncmd->seg_cnt = nCmd->sg_cnt; + if (lpfc_ncmd->seg_cnt > phba->cfg_sg_seg_cnt) { + lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, + "6058 Too many sg segments from " + "NVME Transport. Max %d, " + "nvmeIO sg_cnt %d\n", + phba->cfg_sg_seg_cnt, + lpfc_ncmd->seg_cnt); + lpfc_ncmd->seg_cnt = 0; + return 1; + } + + /* + * The driver established a maximum scatter-gather segment count + * during probe that limits the number of sg elements in any + * single nvme command. Just run through the seg_cnt and format + * the sge's. + */ + nseg = nCmd->sg_cnt; + data_sg = nCmd->first_sgl; + for (i = 0; i < nseg; i++) { + if (data_sg == NULL) { + lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, + "6059 dptr err %d, nseg %d\n", + i, nseg); + lpfc_ncmd->seg_cnt = 0; + return 1; + } + physaddr = data_sg->dma_address; + dma_len = data_sg->length; + sgl->addr_lo = cpu_to_le32(putPaddrLow(physaddr)); + sgl->addr_hi = cpu_to_le32(putPaddrHigh(physaddr)); + sgl->word2 = le32_to_cpu(sgl->word2); + if ((num_bde + 1) == nseg) + bf_set(lpfc_sli4_sge_last, sgl, 1); + else + bf_set(lpfc_sli4_sge_last, sgl, 0); + bf_set(lpfc_sli4_sge_offset, sgl, dma_offset); + bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA); + sgl->word2 = cpu_to_le32(sgl->word2); + sgl->sge_len = cpu_to_le32(dma_len); + + dma_offset += dma_len; + data_sg = sg_next(data_sg); + sgl++; + } + } else { + /* For this clause to be valid, the payload_length + * and sg_cnt must zero. + */ + if (nCmd->payload_length != 0) { + lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, + "6063 NVME DMA Prep Err: sg_cnt %d " + "payload_length x%x\n", + nCmd->sg_cnt, nCmd->payload_length); + return 1; + } + } + + /* + * Due to difference in data length between DIF/non-DIF paths, + * we need to set word 4 of WQE here + */ + wqe->fcp_iread.total_xfer_len = nCmd->payload_length; + return 0; +} + +/** + * lpfc_nvme_fcp_io_submit - Issue an NVME-over-FCP IO + * @lpfc_pnvme: Pointer to the driver's nvme instance data + * @lpfc_nvme_lport: Pointer to the driver's local port data + * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq + * @lpfc_nvme_fcreq: IO request from nvme fc to driver. + * @hw_queue_handle: Driver-returned handle in lpfc_nvme_create_queue + * + * Driver registers this routine as it io request handler. This + * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq + * data structure to the rport + indicated in @lpfc_nvme_rport. + * + * Return value : + * 0 - Success + * TODO: What are the failure codes. + **/ +static int +lpfc_nvme_fcp_io_submit(struct nvme_fc_local_port *pnvme_lport, + struct nvme_fc_remote_port *pnvme_rport, + void *hw_queue_handle, + struct nvmefc_fcp_req *pnvme_fcreq) +{ + int ret = 0; + struct lpfc_nvme_lport *lport; + struct lpfc_vport *vport; + struct lpfc_hba *phba; + struct lpfc_nodelist *ndlp; + struct lpfc_nvme_buf *lpfc_ncmd; + struct lpfc_nvme_rport *rport; + struct lpfc_nvme_qhandle *lpfc_queue_info; + + lport = (struct lpfc_nvme_lport *)pnvme_lport->private; + vport = lport->vport; + phba = vport->phba; + + rport = (struct lpfc_nvme_rport *)pnvme_rport->private; + lpfc_queue_info = (struct lpfc_nvme_qhandle *)hw_queue_handle; + + /* + * Catch race where our node has transitioned, but the + * transport is still transitioning. + */ + ndlp = rport->ndlp; + if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE | LOG_NVME_IOERR, + "6053 rport %p, ndlp %p, DID x%06x " + "ndlp not ready.\n", + rport, ndlp, pnvme_rport->port_id); + + ndlp = lpfc_findnode_did(vport, pnvme_rport->port_id); + if (!ndlp) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_IOERR, + "6066 Missing node for DID %x\n", + pnvme_rport->port_id); + ret = -ENODEV; + goto out_fail; + } + } + + /* The remote node has to be a mapped target or it's an error. */ + if ((ndlp->nlp_type & NLP_NVME_TARGET) && + (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE | LOG_NVME_IOERR, + "6036 rport %p, DID x%06x not ready for " + "IO. State x%x, Type x%x\n", + rport, pnvme_rport->port_id, + ndlp->nlp_state, ndlp->nlp_type); + ret = -ENODEV; + goto out_fail; + + } + + /* The node is shared with FCP IO, make sure the IO pending count does + * not exceed the programmed depth. + */ + if (atomic_read(&ndlp->cmd_pending) >= ndlp->cmd_qdepth) { + ret = -EAGAIN; + goto out_fail; + } + + lpfc_ncmd = lpfc_get_nvme_buf(phba, ndlp); + if (lpfc_ncmd == NULL) { + lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, + "6065 driver's buffer pool is empty, " + "IO failed\n"); + ret = -ENOMEM; + goto out_fail; + } + + /* + * Store the data needed by the driver to issue, abort, and complete + * an IO. + * Do not let the IO hang out forever. There is no midlayer issuing + * an abort so inform the FW of the maximum IO pending time. + */ + pnvme_fcreq->private = (void *)lpfc_ncmd; + lpfc_ncmd->nvmeCmd = pnvme_fcreq; + lpfc_ncmd->nrport = rport; + lpfc_ncmd->start_time = jiffies; + + lpfc_nvme_prep_io_cmd(vport, lpfc_ncmd, ndlp); + ret = lpfc_nvme_prep_io_dma(vport, lpfc_ncmd); + if (ret) { + ret = -ENOMEM; + goto out_free_nvme_buf; + } + + atomic_inc(&ndlp->cmd_pending); + + /* + * Issue the IO on the WQ indicated by index in the hw_queue_handle. + * This identfier was create in our hardware queue create callback + * routine. The driver now is dependent on the IO queue steering from + * the transport. We are trusting the upper NVME layers know which + * index to use and that they have affinitized a CPU to this hardware + * queue. A hardware queue maps to a driver MSI-X vector/EQ/CQ/WQ. + */ + lpfc_ncmd->cur_iocbq.hba_wqidx = lpfc_queue_info->index; + + ret = lpfc_sli4_issue_wqe(phba, LPFC_FCP_RING, &lpfc_ncmd->cur_iocbq); + if (ret) { + atomic_dec(&ndlp->cmd_pending); + lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_IOERR, + "6113 FCP could not issue WQE err %x " + "sid: x%x did: x%x oxid: x%x\n", + ret, vport->fc_myDID, ndlp->nlp_DID, + lpfc_ncmd->cur_iocbq.sli4_xritag); + ret = -EINVAL; + goto out_free_nvme_buf; + } + + return 0; + + out_free_nvme_buf: + lpfc_release_nvme_buf(phba, lpfc_ncmd); + out_fail: + return ret; +} + +/** + * lpfc_nvme_abort_fcreq_cmpl - Complete an NVME FCP abort request. + * @phba: Pointer to HBA context object + * @cmdiocb: Pointer to command iocb object. + * @rspiocb: Pointer to response iocb object. + * + * This is the callback function for any NVME FCP IO that was aborted. + * + * Return value: + * None + **/ +void +lpfc_nvme_abort_fcreq_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, + struct lpfc_wcqe_complete *abts_cmpl) +{ + lpfc_printf_log(phba, KERN_ERR, LOG_NVME, + "6145 ABORT_XRI_CN completing on rpi x%x " + "original iotag x%x, abort cmd iotag x%x " + "req_tag x%x, status x%x, hwstatus x%x\n", + cmdiocb->iocb.un.acxri.abortContextTag, + cmdiocb->iocb.un.acxri.abortIoTag, + cmdiocb->iotag, + bf_get(lpfc_wcqe_c_request_tag, abts_cmpl), + bf_get(lpfc_wcqe_c_status, abts_cmpl), + bf_get(lpfc_wcqe_c_hw_status, abts_cmpl)); + lpfc_sli_release_iocbq(phba, cmdiocb); +} + +/** + * lpfc_nvme_fcp_abort - Issue an NVME-over-FCP ABTS + * @lpfc_pnvme: Pointer to the driver's nvme instance data + * @lpfc_nvme_lport: Pointer to the driver's local port data + * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq + * @lpfc_nvme_fcreq: IO request from nvme fc to driver. + * @hw_queue_handle: Driver-returned handle in lpfc_nvme_create_queue + * + * Driver registers this routine as its nvme request io abort handler. This + * routine issues an fcp Abort WQE with data from the @lpfc_nvme_fcpreq + * data structure to the rport indicated in @lpfc_nvme_rport. This routine + * is executed asynchronously - one the target is validated as "MAPPED" and + * ready for IO, the driver issues the abort request and returns. + * + * Return value: + * None + **/ +static void +lpfc_nvme_fcp_abort(struct nvme_fc_local_port *pnvme_lport, + struct nvme_fc_remote_port *pnvme_rport, + void *hw_queue_handle, + struct nvmefc_fcp_req *pnvme_fcreq) +{ + struct lpfc_nvme_lport *lport; + struct lpfc_vport *vport; + struct lpfc_hba *phba; + struct lpfc_nodelist *ndlp; + struct lpfc_nvme_rport *rport; + struct lpfc_nvme_buf *lpfc_nbuf; + struct lpfc_iocbq *abts_buf; + struct lpfc_iocbq *nvmereq_wqe; + union lpfc_wqe *abts_wqe; + unsigned long flags; + int ret_val; + + lport = (struct lpfc_nvme_lport *)pnvme_lport->private; + rport = (struct lpfc_nvme_rport *)pnvme_rport->private; + vport = lport->vport; + phba = vport->phba; + + /* Announce entry to new IO submit field. */ + lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS, + "6002 Abort Request to rport DID x%06x " + "for nvme_fc_req %p\n", + pnvme_rport->port_id, + pnvme_fcreq); + + /* + * Catch race where our node has transitioned, but the + * transport is still transitioning. + */ + ndlp = rport->ndlp; + if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE | LOG_NVME_ABTS, + "6054 rport %p, ndlp %p, DID x%06x ndlp " + " not ready.\n", + rport, ndlp, pnvme_rport->port_id); + + ndlp = lpfc_findnode_did(vport, pnvme_rport->port_id); + if (!ndlp) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS, + "6055 Could not find node for " + "DID %x\n", + pnvme_rport->port_id); + return; + } + } + + /* The remote node has to be ready to send an abort. */ + if ((ndlp->nlp_state != NLP_STE_MAPPED_NODE) && + !(ndlp->nlp_type & NLP_NVME_TARGET)) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE | LOG_NVME_ABTS, + "6048 rport %p, DID x%06x not ready for " + "IO. State x%x, Type x%x\n", + rport, pnvme_rport->port_id, + ndlp->nlp_state, ndlp->nlp_type); + return; + } + + /* If the hba is getting reset, this flag is set. It is + * cleared when the reset is complete and rings reestablished. + */ + spin_lock_irqsave(&phba->hbalock, flags); + /* driver queued commands are in process of being flushed */ + if (phba->hba_flag & HBA_NVME_IOQ_FLUSH) { + spin_unlock_irqrestore(&phba->hbalock, flags); + lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME, + "6139 Driver in reset cleanup - flushing " + "NVME Req now. hba_flag x%x\n", + phba->hba_flag); + return; + } + + lpfc_nbuf = (struct lpfc_nvme_buf *)pnvme_fcreq->private; + if (!lpfc_nbuf) { + spin_unlock_irqrestore(&phba->hbalock, flags); + lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME, + "6140 NVME IO req has no matching lpfc nvme " + "io buffer. Skipping abort req.\n"); + return; + } else if (!lpfc_nbuf->nvmeCmd) { + spin_unlock_irqrestore(&phba->hbalock, flags); + lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME, + "6141 lpfc NVME IO req has no nvme_fcreq " + "io buffer. Skipping abort req.\n"); + return; + } + + /* + * The lpfc_nbuf and the mapped nvme_fcreq in the driver's + * state must match the nvme_fcreq passed by the nvme + * transport. If they don't match, it is likely the driver + * has already completed the NVME IO and the nvme transport + * has not seen it yet. + */ + if (lpfc_nbuf->nvmeCmd != pnvme_fcreq) { + spin_unlock_irqrestore(&phba->hbalock, flags); + lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME, + "6143 NVME req mismatch: " + "lpfc_nbuf %p nvmeCmd %p, " + "pnvme_fcreq %p. Skipping Abort\n", + lpfc_nbuf, lpfc_nbuf->nvmeCmd, + pnvme_fcreq); + return; + } + + /* Don't abort IOs no longer on the pending queue. */ + nvmereq_wqe = &lpfc_nbuf->cur_iocbq; + if (!(nvmereq_wqe->iocb_flag & LPFC_IO_ON_TXCMPLQ)) { + spin_unlock_irqrestore(&phba->hbalock, flags); + lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME, + "6142 NVME IO req %p not queued - skipping " + "abort req\n", + pnvme_fcreq); + return; + } + + /* Outstanding abort is in progress */ + if (nvmereq_wqe->iocb_flag & LPFC_DRIVER_ABORTED) { + spin_unlock_irqrestore(&phba->hbalock, flags); + lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME, + "6144 Outstanding NVME I/O Abort Request " + "still pending on nvme_fcreq %p, " + "lpfc_ncmd %p\n", + pnvme_fcreq, lpfc_nbuf); + return; + } + + abts_buf = __lpfc_sli_get_iocbq(phba); + if (!abts_buf) { + spin_unlock_irqrestore(&phba->hbalock, flags); + lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME, + "6136 No available abort wqes. Skipping " + "Abts req for nvme_fcreq %p.\n", + pnvme_fcreq); + return; + } + + /* Ready - mark outstanding as aborted by driver. */ + nvmereq_wqe->iocb_flag |= LPFC_DRIVER_ABORTED; + + /* Complete prepping the abort wqe and issue to the FW. */ + abts_wqe = &abts_buf->wqe; + + /* WQEs are reused. Clear stale data and set key fields to + * zero like ia, iaab, iaar, xri_tag, and ctxt_tag. + */ + memset(abts_wqe, 0, sizeof(union lpfc_wqe)); + bf_set(abort_cmd_criteria, &abts_wqe->abort_cmd, T_XRI_TAG); + + /* word 7 */ + bf_set(wqe_ct, &abts_wqe->abort_cmd.wqe_com, 0); + bf_set(wqe_cmnd, &abts_wqe->abort_cmd.wqe_com, CMD_ABORT_XRI_CX); + bf_set(wqe_class, &abts_wqe->abort_cmd.wqe_com, + nvmereq_wqe->iocb.ulpClass); + + /* word 8 - tell the FW to abort the IO associated with this + * outstanding exchange ID. + */ + abts_wqe->abort_cmd.wqe_com.abort_tag = nvmereq_wqe->sli4_xritag; + + /* word 9 - this is the iotag for the abts_wqe completion. */ + bf_set(wqe_reqtag, &abts_wqe->abort_cmd.wqe_com, + abts_buf->iotag); + + /* word 10 */ + bf_set(wqe_wqid, &abts_wqe->abort_cmd.wqe_com, nvmereq_wqe->hba_wqidx); + bf_set(wqe_qosd, &abts_wqe->abort_cmd.wqe_com, 1); + bf_set(wqe_lenloc, &abts_wqe->abort_cmd.wqe_com, LPFC_WQE_LENLOC_NONE); + + /* word 11 */ + bf_set(wqe_cmd_type, &abts_wqe->abort_cmd.wqe_com, OTHER_COMMAND); + bf_set(wqe_wqec, &abts_wqe->abort_cmd.wqe_com, 1); + bf_set(wqe_cqid, &abts_wqe->abort_cmd.wqe_com, LPFC_WQE_CQ_ID_DEFAULT); + + /* ABTS WQE must go to the same WQ as the WQE to be aborted */ + abts_buf->iocb_flag |= LPFC_IO_NVME; + abts_buf->hba_wqidx = nvmereq_wqe->hba_wqidx; + abts_buf->vport = vport; + abts_buf->wqe_cmpl = lpfc_nvme_abort_fcreq_cmpl; + ret_val = lpfc_sli4_issue_wqe(phba, LPFC_FCP_RING, abts_buf); + spin_unlock_irqrestore(&phba->hbalock, flags); + if (ret_val == IOCB_ERROR) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME, + "6137 Failed abts issue_wqe with status x%x " + "for nvme_fcreq %p.\n", + ret_val, pnvme_fcreq); + lpfc_sli_release_iocbq(phba, abts_buf); + return; + } + + lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME, + "6138 Transport Abort NVME Request Issued for\n" + "ox_id x%x on reqtag x%x\n", + nvmereq_wqe->sli4_xritag, + abts_buf->iotag); +} + +/* Declare and initialization an instance of the FC NVME template. */ +static struct nvme_fc_port_template lpfc_nvme_template = { + /* initiator-based functions */ + .localport_delete = lpfc_nvme_localport_delete, + .remoteport_delete = lpfc_nvme_remoteport_delete, + .create_queue = lpfc_nvme_create_queue, + .delete_queue = lpfc_nvme_delete_queue, + .ls_req = lpfc_nvme_ls_req, + .fcp_io = lpfc_nvme_fcp_io_submit, + .ls_abort = lpfc_nvme_ls_abort, + .fcp_abort = lpfc_nvme_fcp_abort, + + .max_hw_queues = 1, + .max_sgl_segments = LPFC_NVME_DEFAULT_SEGS, + .max_dif_sgl_segments = LPFC_NVME_DEFAULT_SEGS, + .dma_boundary = 0xFFFFFFFF, + + /* Sizes of additional private data for data structures. + * No use for the last two sizes at this time. + */ + .local_priv_sz = sizeof(struct lpfc_nvme_lport), + .remote_priv_sz = sizeof(struct lpfc_nvme_rport), + .lsrqst_priv_sz = 0, + .fcprqst_priv_sz = 0, +}; + +/** + * lpfc_sli4_post_nvme_sgl_block - post a block of nvme sgl list to firmware + * @phba: pointer to lpfc hba data structure. + * @nblist: pointer to nvme buffer list. + * @count: number of scsi buffers on the list. + * + * This routine is invoked to post a block of @count scsi sgl pages from a + * SCSI buffer list @nblist to the HBA using non-embedded mailbox command. + * No Lock is held. + * + **/ +static int +lpfc_sli4_post_nvme_sgl_block(struct lpfc_hba *phba, + struct list_head *nblist, + int count) +{ + struct lpfc_nvme_buf *lpfc_ncmd; + struct lpfc_mbx_post_uembed_sgl_page1 *sgl; + struct sgl_page_pairs *sgl_pg_pairs; + void *viraddr; + LPFC_MBOXQ_t *mbox; + uint32_t reqlen, alloclen, pg_pairs; + uint32_t mbox_tmo; + uint16_t xritag_start = 0; + int rc = 0; + uint32_t shdr_status, shdr_add_status; + dma_addr_t pdma_phys_bpl1; + union lpfc_sli4_cfg_shdr *shdr; + + /* Calculate the requested length of the dma memory */ + reqlen = count * sizeof(struct sgl_page_pairs) + + sizeof(union lpfc_sli4_cfg_shdr) + sizeof(uint32_t); + if (reqlen > SLI4_PAGE_SIZE) { + lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, + "6118 Block sgl registration required DMA " + "size (%d) great than a page\n", reqlen); + return -ENOMEM; + } + mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mbox) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "6119 Failed to allocate mbox cmd memory\n"); + return -ENOMEM; + } + + /* Allocate DMA memory and set up the non-embedded mailbox command */ + alloclen = lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE, + LPFC_MBOX_OPCODE_FCOE_POST_SGL_PAGES, reqlen, + LPFC_SLI4_MBX_NEMBED); + + if (alloclen < reqlen) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "6120 Allocated DMA memory size (%d) is " + "less than the requested DMA memory " + "size (%d)\n", alloclen, reqlen); + lpfc_sli4_mbox_cmd_free(phba, mbox); + return -ENOMEM; + } + + /* Get the first SGE entry from the non-embedded DMA memory */ + viraddr = mbox->sge_array->addr[0]; + + /* Set up the SGL pages in the non-embedded DMA pages */ + sgl = (struct lpfc_mbx_post_uembed_sgl_page1 *)viraddr; + sgl_pg_pairs = &sgl->sgl_pg_pairs; + + pg_pairs = 0; + list_for_each_entry(lpfc_ncmd, nblist, list) { + /* Set up the sge entry */ + sgl_pg_pairs->sgl_pg0_addr_lo = + cpu_to_le32(putPaddrLow(lpfc_ncmd->dma_phys_sgl)); + sgl_pg_pairs->sgl_pg0_addr_hi = + cpu_to_le32(putPaddrHigh(lpfc_ncmd->dma_phys_sgl)); + if (phba->cfg_sg_dma_buf_size > SGL_PAGE_SIZE) + pdma_phys_bpl1 = lpfc_ncmd->dma_phys_sgl + + SGL_PAGE_SIZE; + else + pdma_phys_bpl1 = 0; + sgl_pg_pairs->sgl_pg1_addr_lo = + cpu_to_le32(putPaddrLow(pdma_phys_bpl1)); + sgl_pg_pairs->sgl_pg1_addr_hi = + cpu_to_le32(putPaddrHigh(pdma_phys_bpl1)); + /* Keep the first xritag on the list */ + if (pg_pairs == 0) + xritag_start = lpfc_ncmd->cur_iocbq.sli4_xritag; + sgl_pg_pairs++; + pg_pairs++; + } + bf_set(lpfc_post_sgl_pages_xri, sgl, xritag_start); + bf_set(lpfc_post_sgl_pages_xricnt, sgl, pg_pairs); + /* Perform endian conversion if necessary */ + sgl->word0 = cpu_to_le32(sgl->word0); + + if (!phba->sli4_hba.intr_enable) + rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL); + else { + mbox_tmo = lpfc_mbox_tmo_val(phba, mbox); + rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo); + } + shdr = (union lpfc_sli4_cfg_shdr *)&sgl->cfg_shdr; + shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); + shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); + if (rc != MBX_TIMEOUT) + lpfc_sli4_mbox_cmd_free(phba, mbox); + if (shdr_status || shdr_add_status || rc) { + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "6125 POST_SGL_BLOCK mailbox command failed " + "status x%x add_status x%x mbx status x%x\n", + shdr_status, shdr_add_status, rc); + rc = -ENXIO; + } + return rc; +} + +/** + * lpfc_post_nvme_sgl_list - Post blocks of nvme buffer sgls from a list + * @phba: pointer to lpfc hba data structure. + * @post_nblist: pointer to the nvme buffer list. + * + * This routine walks a list of nvme buffers that was passed in. It attempts + * to construct blocks of nvme buffer sgls which contains contiguous xris and + * uses the non-embedded SGL block post mailbox commands to post to the port. + * For single NVME buffer sgl with non-contiguous xri, if any, it shall use + * embedded SGL post mailbox command for posting. The @post_nblist passed in + * must be local list, thus no lock is needed when manipulate the list. + * + * Returns: 0 = failure, non-zero number of successfully posted buffers. + **/ +static int +lpfc_post_nvme_sgl_list(struct lpfc_hba *phba, + struct list_head *post_nblist, int sb_count) +{ + struct lpfc_nvme_buf *lpfc_ncmd, *lpfc_ncmd_next; + int status, sgl_size; + int post_cnt = 0, block_cnt = 0, num_posting = 0, num_posted = 0; + dma_addr_t pdma_phys_sgl1; + int last_xritag = NO_XRI; + int cur_xritag; + LIST_HEAD(prep_nblist); + LIST_HEAD(blck_nblist); + LIST_HEAD(nvme_nblist); + + /* sanity check */ + if (sb_count <= 0) + return -EINVAL; + + sgl_size = phba->cfg_sg_dma_buf_size; + + list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next, post_nblist, list) { + list_del_init(&lpfc_ncmd->list); + block_cnt++; + if ((last_xritag != NO_XRI) && + (lpfc_ncmd->cur_iocbq.sli4_xritag != last_xritag + 1)) { + /* a hole in xri block, form a sgl posting block */ + list_splice_init(&prep_nblist, &blck_nblist); + post_cnt = block_cnt - 1; + /* prepare list for next posting block */ + list_add_tail(&lpfc_ncmd->list, &prep_nblist); + block_cnt = 1; + } else { + /* prepare list for next posting block */ + list_add_tail(&lpfc_ncmd->list, &prep_nblist); + /* enough sgls for non-embed sgl mbox command */ + if (block_cnt == LPFC_NEMBED_MBOX_SGL_CNT) { + list_splice_init(&prep_nblist, &blck_nblist); + post_cnt = block_cnt; + block_cnt = 0; + } + } + num_posting++; + last_xritag = lpfc_ncmd->cur_iocbq.sli4_xritag; + + /* end of repost sgl list condition for NVME buffers */ + if (num_posting == sb_count) { + if (post_cnt == 0) { + /* last sgl posting block */ + list_splice_init(&prep_nblist, &blck_nblist); + post_cnt = block_cnt; + } else if (block_cnt == 1) { + /* last single sgl with non-contiguous xri */ + if (sgl_size > SGL_PAGE_SIZE) + pdma_phys_sgl1 = + lpfc_ncmd->dma_phys_sgl + + SGL_PAGE_SIZE; + else + pdma_phys_sgl1 = 0; + cur_xritag = lpfc_ncmd->cur_iocbq.sli4_xritag; + status = lpfc_sli4_post_sgl(phba, + lpfc_ncmd->dma_phys_sgl, + pdma_phys_sgl1, cur_xritag); + if (status) { + /* failure, put on abort nvme list */ + lpfc_ncmd->exch_busy = 1; + } else { + /* success, put on NVME buffer list */ + lpfc_ncmd->exch_busy = 0; + lpfc_ncmd->status = IOSTAT_SUCCESS; + num_posted++; + } + /* success, put on NVME buffer sgl list */ + list_add_tail(&lpfc_ncmd->list, &nvme_nblist); + } + } + + /* continue until a nembed page worth of sgls */ + if (post_cnt == 0) + continue; + + /* post block of NVME buffer list sgls */ + status = lpfc_sli4_post_nvme_sgl_block(phba, &blck_nblist, + post_cnt); + + /* don't reset xirtag due to hole in xri block */ + if (block_cnt == 0) + last_xritag = NO_XRI; + + /* reset NVME buffer post count for next round of posting */ + post_cnt = 0; + + /* put posted NVME buffer-sgl posted on NVME buffer sgl list */ + while (!list_empty(&blck_nblist)) { + list_remove_head(&blck_nblist, lpfc_ncmd, + struct lpfc_nvme_buf, list); + if (status) { + /* failure, put on abort nvme list */ + lpfc_ncmd->exch_busy = 1; + } else { + /* success, put on NVME buffer list */ + lpfc_ncmd->exch_busy = 0; + lpfc_ncmd->status = IOSTAT_SUCCESS; + num_posted++; + } + list_add_tail(&lpfc_ncmd->list, &nvme_nblist); + } + } + /* Push NVME buffers with sgl posted to the available list */ + while (!list_empty(&nvme_nblist)) { + list_remove_head(&nvme_nblist, lpfc_ncmd, + struct lpfc_nvme_buf, list); + lpfc_release_nvme_buf(phba, lpfc_ncmd); + } + return num_posted; +} + +/** + * lpfc_repost_nvme_sgl_list - Repost all the allocated nvme buffer sgls + * @phba: pointer to lpfc hba data structure. + * + * This routine walks the list of nvme buffers that have been allocated and + * repost them to the port by using SGL block post. This is needed after a + * pci_function_reset/warm_start or start. The lpfc_hba_down_post_s4 routine + * is responsible for moving all nvme buffers on the lpfc_abts_nvme_sgl_list + * to the lpfc_nvme_buf_list. If the repost fails, reject all nvme buffers. + * + * Returns: 0 = success, non-zero failure. + **/ +int +lpfc_repost_nvme_sgl_list(struct lpfc_hba *phba) +{ + LIST_HEAD(post_nblist); + int num_posted, rc = 0; + + /* get all NVME buffers need to repost to a local list */ + spin_lock_irq(&phba->nvme_buf_list_get_lock); + spin_lock(&phba->nvme_buf_list_put_lock); + list_splice_init(&phba->lpfc_nvme_buf_list_get, &post_nblist); + list_splice(&phba->lpfc_nvme_buf_list_put, &post_nblist); + spin_unlock(&phba->nvme_buf_list_put_lock); + spin_unlock_irq(&phba->nvme_buf_list_get_lock); + + /* post the list of nvme buffer sgls to port if available */ + if (!list_empty(&post_nblist)) { + num_posted = lpfc_post_nvme_sgl_list(phba, &post_nblist, + phba->sli4_hba.nvme_xri_cnt); + /* failed to post any nvme buffer, return error */ + if (num_posted == 0) + rc = -EIO; + } + return rc; +} + +/** + * lpfc_new_nvme_buf - Scsi buffer allocator for HBA with SLI4 IF spec + * @vport: The virtual port for which this call being executed. + * @num_to_allocate: The requested number of buffers to allocate. + * + * This routine allocates nvme buffers for device with SLI-4 interface spec, + * the nvme buffer contains all the necessary information needed to initiate + * a NVME I/O. After allocating up to @num_to_allocate NVME buffers and put + * them on a list, it post them to the port by using SGL block post. + * + * Return codes: + * int - number of nvme buffers that were allocated and posted. + * 0 = failure, less than num_to_alloc is a partial failure. + **/ +static int +lpfc_new_nvme_buf(struct lpfc_vport *vport, int num_to_alloc) +{ + struct lpfc_hba *phba = vport->phba; + struct lpfc_nvme_buf *lpfc_ncmd; + struct lpfc_iocbq *pwqeq; + union lpfc_wqe128 *wqe; + struct sli4_sge *sgl; + dma_addr_t pdma_phys_sgl; + uint16_t iotag, lxri = 0; + int bcnt, num_posted, sgl_size; + LIST_HEAD(prep_nblist); + LIST_HEAD(post_nblist); + LIST_HEAD(nvme_nblist); + + sgl_size = phba->cfg_sg_dma_buf_size; + + for (bcnt = 0; bcnt < num_to_alloc; bcnt++) { + lpfc_ncmd = kzalloc(sizeof(struct lpfc_nvme_buf), GFP_KERNEL); + if (!lpfc_ncmd) + break; + /* + * Get memory from the pci pool to map the virt space to + * pci bus space for an I/O. The DMA buffer includes the + * number of SGE's necessary to support the sg_tablesize. + */ + lpfc_ncmd->data = pci_pool_alloc(phba->lpfc_sg_dma_buf_pool, + GFP_KERNEL, + &lpfc_ncmd->dma_handle); + if (!lpfc_ncmd->data) { + kfree(lpfc_ncmd); + break; + } + memset(lpfc_ncmd->data, 0, phba->cfg_sg_dma_buf_size); + + lxri = lpfc_sli4_next_xritag(phba); + if (lxri == NO_XRI) { + pci_pool_free(phba->lpfc_sg_dma_buf_pool, + lpfc_ncmd->data, lpfc_ncmd->dma_handle); + kfree(lpfc_ncmd); + break; + } + pwqeq = &(lpfc_ncmd->cur_iocbq); + wqe = (union lpfc_wqe128 *)&pwqeq->wqe; + + /* Allocate iotag for lpfc_ncmd->cur_iocbq. */ + iotag = lpfc_sli_next_iotag(phba, pwqeq); + if (iotag == 0) { + pci_pool_free(phba->lpfc_sg_dma_buf_pool, + lpfc_ncmd->data, lpfc_ncmd->dma_handle); + kfree(lpfc_ncmd); + lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, + "6121 Failed to allocated IOTAG for" + " XRI:0x%x\n", lxri); + lpfc_sli4_free_xri(phba, lxri); + break; + } + pwqeq->sli4_lxritag = lxri; + pwqeq->sli4_xritag = phba->sli4_hba.xri_ids[lxri]; + pwqeq->iocb_flag |= LPFC_IO_NVME; + pwqeq->context1 = lpfc_ncmd; + pwqeq->wqe_cmpl = lpfc_nvme_io_cmd_wqe_cmpl; + + /* Initialize local short-hand pointers. */ + lpfc_ncmd->nvme_sgl = lpfc_ncmd->data; + sgl = lpfc_ncmd->nvme_sgl; + pdma_phys_sgl = lpfc_ncmd->dma_handle; + lpfc_ncmd->dma_phys_sgl = pdma_phys_sgl; + + /* Rsp SGE will be filled in when we rcv an IO + * from the NVME Layer to be sent. + * The cmd is going to be embedded so we need a SKIP SGE. + */ + bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP); + bf_set(lpfc_sli4_sge_last, sgl, 0); + sgl->word2 = cpu_to_le32(sgl->word2); + /* Fill in word 3 / sgl_len during cmd submission */ + + lpfc_ncmd->cur_iocbq.context1 = lpfc_ncmd; + + /* Word 7 */ + bf_set(wqe_erp, &wqe->generic.wqe_com, 0); + /* NVME upper layers will time things out, if needed */ + bf_set(wqe_tmo, &wqe->generic.wqe_com, 0); + + /* Word 10 */ + bf_set(wqe_ebde_cnt, &wqe->generic.wqe_com, 0); + bf_set(wqe_dbde, &wqe->generic.wqe_com, 1); + + /* add the nvme buffer to a post list */ + list_add_tail(&lpfc_ncmd->list, &post_nblist); + spin_lock_irq(&phba->nvme_buf_list_get_lock); + phba->sli4_hba.nvme_xri_cnt++; + spin_unlock_irq(&phba->nvme_buf_list_get_lock); + } + lpfc_printf_log(phba, KERN_INFO, LOG_NVME, + "6114 Allocate %d out of %d requested new NVME " + "buffers\n", bcnt, num_to_alloc); + + /* post the list of nvme buffer sgls to port if available */ + if (!list_empty(&post_nblist)) + num_posted = lpfc_post_nvme_sgl_list(phba, + &post_nblist, bcnt); + else + num_posted = 0; + + return num_posted; +} + +/** + * lpfc_get_nvme_buf - Get a nvme buffer from lpfc_nvme_buf_list of the HBA + * @phba: The HBA for which this call is being executed. + * + * This routine removes a nvme buffer from head of @phba lpfc_nvme_buf_list list + * and returns to caller. + * + * Return codes: + * NULL - Error + * Pointer to lpfc_nvme_buf - Success + **/ +static struct lpfc_nvme_buf * +lpfc_get_nvme_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) +{ + struct lpfc_nvme_buf *lpfc_ncmd, *lpfc_ncmd_next; + unsigned long iflag = 0; + int found = 0; + + spin_lock_irqsave(&phba->nvme_buf_list_get_lock, iflag); + list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next, + &phba->lpfc_nvme_buf_list_get, list) { + if (lpfc_test_rrq_active(phba, ndlp, + lpfc_ncmd->cur_iocbq.sli4_lxritag)) + continue; + list_del(&lpfc_ncmd->list); + found = 1; + break; + } + if (!found) { + spin_lock(&phba->nvme_buf_list_put_lock); + list_splice(&phba->lpfc_nvme_buf_list_put, + &phba->lpfc_nvme_buf_list_get); + INIT_LIST_HEAD(&phba->lpfc_nvme_buf_list_put); + spin_unlock(&phba->nvme_buf_list_put_lock); + list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next, + &phba->lpfc_nvme_buf_list_get, list) { + if (lpfc_test_rrq_active( + phba, ndlp, lpfc_ncmd->cur_iocbq.sli4_lxritag)) + continue; + list_del(&lpfc_ncmd->list); + found = 1; + break; + } + } + spin_unlock_irqrestore(&phba->nvme_buf_list_get_lock, iflag); + if (!found) + return NULL; + return lpfc_ncmd; +} + +/** + * lpfc_release_nvme_buf: Return a nvme buffer back to hba nvme buf list. + * @phba: The Hba for which this call is being executed. + * @lpfc_ncmd: The nvme buffer which is being released. + * + * This routine releases @lpfc_ncmd nvme buffer by adding it to tail of @phba + * lpfc_nvme_buf_list list. For SLI4 XRI's are tied to the nvme buffer + * and cannot be reused for at least RA_TOV amount of time if it was + * aborted. + **/ +static void +lpfc_release_nvme_buf(struct lpfc_hba *phba, struct lpfc_nvme_buf *lpfc_ncmd) +{ + unsigned long iflag = 0; + + lpfc_ncmd->nonsg_phys = 0; + if (lpfc_ncmd->exch_busy) { + spin_lock_irqsave(&phba->sli4_hba.abts_nvme_buf_list_lock, + iflag); + lpfc_ncmd->nvmeCmd = NULL; + list_add_tail(&lpfc_ncmd->list, + &phba->sli4_hba.lpfc_abts_nvme_buf_list); + spin_unlock_irqrestore(&phba->sli4_hba.abts_nvme_buf_list_lock, + iflag); + } else { + lpfc_ncmd->nvmeCmd = NULL; + lpfc_ncmd->cur_iocbq.iocb_flag = LPFC_IO_NVME; + spin_lock_irqsave(&phba->nvme_buf_list_put_lock, iflag); + list_add_tail(&lpfc_ncmd->list, &phba->lpfc_nvme_buf_list_put); + spin_unlock_irqrestore(&phba->nvme_buf_list_put_lock, iflag); + } +} + +/** + * lpfc_nvme_create_localport - Create/Bind an nvme localport instance. + * @pvport - the lpfc_vport instance requesting a localport. + * + * This routine is invoked to create an nvme localport instance to bind + * to the nvme_fc_transport. It is called once during driver load + * like lpfc_create_shost after all other services are initialized. + * It requires a vport, vpi, and wwns at call time. Other localport + * parameters are modified as the driver's FCID and the Fabric WWN + * are established. + * + * Return codes + * 0 - successful + * -ENOMEM - no heap memory available + * other values - from nvme registration upcall + **/ +int +lpfc_nvme_create_localport(struct lpfc_vport *vport) +{ + struct lpfc_hba *phba = vport->phba; + struct nvme_fc_port_info nfcp_info; + struct nvme_fc_local_port *localport; + struct lpfc_nvme_lport *lport; + int len, ret = 0; + + /* Initialize this localport instance. The vport wwn usage ensures + * that NPIV is accounted for. + */ + memset(&nfcp_info, 0, sizeof(struct nvme_fc_port_info)); + nfcp_info.port_role = FC_PORT_ROLE_NVME_INITIATOR; + nfcp_info.node_name = wwn_to_u64(vport->fc_nodename.u.wwn); + nfcp_info.port_name = wwn_to_u64(vport->fc_portname.u.wwn); + + /* For now need + 1 to get around NVME transport logic */ + lpfc_nvme_template.max_sgl_segments = phba->cfg_sg_seg_cnt + 1; + lpfc_nvme_template.max_hw_queues = phba->cfg_nvme_io_channel; + + /* localport is allocated from the stack, but the registration + * call allocates heap memory as well as the private area. + */ + ret = nvme_fc_register_localport(&nfcp_info, &lpfc_nvme_template, + &vport->phba->pcidev->dev, &localport); + if (!ret) { + lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME | LOG_NVME_DISC, + "6005 Successfully registered local " + "NVME port num %d, localP %p, private %p, " + "sg_seg %d\n", + localport->port_num, localport, + localport->private, + lpfc_nvme_template.max_sgl_segments); + + /* Private is our lport size declared in the template. */ + lport = (struct lpfc_nvme_lport *)localport->private; + vport->localport = localport; + lport->vport = vport; + INIT_LIST_HEAD(&lport->rport_list); + vport->nvmei_support = 1; + } + + len = lpfc_new_nvme_buf(vport, phba->sli4_hba.nvme_xri_max); + vport->phba->total_nvme_bufs += len; + return ret; +} + +/** + * lpfc_nvme_destroy_localport - Destroy lpfc_nvme bound to nvme transport. + * @pnvme: pointer to lpfc nvme data structure. + * + * This routine is invoked to destroy all lports bound to the phba. + * The lport memory was allocated by the nvme fc transport and is + * released there. This routine ensures all rports bound to the + * lport have been disconnected. + * + **/ +void +lpfc_nvme_destroy_localport(struct lpfc_vport *vport) +{ + struct nvme_fc_local_port *localport; + struct lpfc_nvme_lport *lport; + struct lpfc_nvme_rport *rport = NULL, *rport_next = NULL; + int ret; + + if (vport->nvmei_support == 0) + return; + + localport = vport->localport; + vport->localport = NULL; + lport = (struct lpfc_nvme_lport *)localport->private; + + lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME, + "6011 Destroying NVME localport %p\n", + localport); + + list_for_each_entry_safe(rport, rport_next, &lport->rport_list, list) { + /* The last node ref has to get released now before the rport + * private memory area is released by the transport. + */ + list_del(&rport->list); + + init_completion(&rport->rport_unreg_done); + ret = nvme_fc_unregister_remoteport(rport->remoteport); + if (ret) + lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC, + "6008 rport fail destroy %x\n", ret); + wait_for_completion_timeout(&rport->rport_unreg_done, 5); + } + /* lport's rport list is clear. Unregister + * lport and release resources. + */ + init_completion(&lport->lport_unreg_done); + ret = nvme_fc_unregister_localport(localport); + wait_for_completion_timeout(&lport->lport_unreg_done, 5); + + /* Regardless of the unregister upcall response, clear + * nvmei_support. All rports are unregistered and the + * driver will clean up. + */ + vport->nvmei_support = 0; + if (ret == 0) { + lpfc_printf_vlog(vport, + KERN_INFO, LOG_NVME_DISC, + "6009 Unregistered lport Success\n"); + } else { + lpfc_printf_vlog(vport, + KERN_INFO, LOG_NVME_DISC, + "6010 Unregistered lport " + "Failed, status x%x\n", + ret); + } +} + +void +lpfc_nvme_update_localport(struct lpfc_vport *vport) +{ + struct nvme_fc_local_port *localport; + struct lpfc_nvme_lport *lport; + + localport = vport->localport; + lport = (struct lpfc_nvme_lport *)localport->private; + + lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME, + "6012 Update NVME lport %p did x%x\n", + localport, vport->fc_myDID); + + localport->port_id = vport->fc_myDID; + if (localport->port_id == 0) + localport->port_role = FC_PORT_ROLE_NVME_DISCOVERY; + else + localport->port_role = FC_PORT_ROLE_NVME_INITIATOR; + + lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, + "6030 bound lport %p to DID x%06x\n", + lport, localport->port_id); + +} + +int +lpfc_nvme_register_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) +{ + int ret = 0; + struct nvme_fc_local_port *localport; + struct lpfc_nvme_lport *lport; + struct lpfc_nvme_rport *rport; + struct nvme_fc_remote_port *remote_port; + struct nvme_fc_port_info rpinfo; + + lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NVME_DISC, + "6006 Register NVME PORT. DID x%06x nlptype x%x\n", + ndlp->nlp_DID, ndlp->nlp_type); + + localport = vport->localport; + lport = (struct lpfc_nvme_lport *)localport->private; + + if (ndlp->nlp_type & (NLP_NVME_TARGET | NLP_NVME_INITIATOR)) { + + /* The driver isn't expecting the rport wwn to change + * but it might get a different DID on a different + * fabric. + */ + list_for_each_entry(rport, &lport->rport_list, list) { + if (rport->remoteport->port_name != + wwn_to_u64(ndlp->nlp_portname.u.wwn)) + continue; + lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NVME_DISC, + "6035 lport %p, found matching rport " + "at wwpn 0x%llx, Data: x%x x%x x%x " + "x%06x\n", + lport, + rport->remoteport->port_name, + rport->remoteport->port_id, + rport->remoteport->port_role, + ndlp->nlp_type, + ndlp->nlp_DID); + remote_port = rport->remoteport; + if ((remote_port->port_id == 0) && + (remote_port->port_role == + FC_PORT_ROLE_NVME_DISCOVERY)) { + remote_port->port_id = ndlp->nlp_DID; + remote_port->port_role &= + ~FC_PORT_ROLE_NVME_DISCOVERY; + if (ndlp->nlp_type & NLP_NVME_TARGET) + remote_port->port_role |= + FC_PORT_ROLE_NVME_TARGET; + if (ndlp->nlp_type & NLP_NVME_INITIATOR) + remote_port->port_role |= + FC_PORT_ROLE_NVME_INITIATOR; + + lpfc_printf_vlog(ndlp->vport, KERN_INFO, + LOG_NVME_DISC, + "6014 Rebinding lport to " + "rport wwpn 0x%llx, " + "Data: x%x x%x x%x x%06x\n", + remote_port->port_name, + remote_port->port_id, + remote_port->port_role, + ndlp->nlp_type, + ndlp->nlp_DID); + } + return 0; + } + + /* NVME rports are not preserved across devloss. + * Just register this instance. + */ + rpinfo.port_id = ndlp->nlp_DID; + rpinfo.port_role = 0; + if (ndlp->nlp_type & NLP_NVME_TARGET) + rpinfo.port_role |= FC_PORT_ROLE_NVME_TARGET; + if (ndlp->nlp_type & NLP_NVME_INITIATOR) + rpinfo.port_role |= FC_PORT_ROLE_NVME_INITIATOR; + rpinfo.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn); + rpinfo.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn); + + ret = nvme_fc_register_remoteport(localport, &rpinfo, + &remote_port); + if (!ret) { + rport = remote_port->private; + rport->remoteport = remote_port; + rport->lport = lport; + rport->ndlp = lpfc_nlp_get(ndlp); + if (!rport->ndlp) + return -1; + ndlp->nrport = rport; + INIT_LIST_HEAD(&rport->list); + list_add_tail(&rport->list, &lport->rport_list); + lpfc_printf_vlog(vport, KERN_INFO, + LOG_NVME_DISC | LOG_NODE, + "6022 Binding new rport to lport %p " + "Rport WWNN 0x%llx, Rport WWPN 0x%llx " + "DID x%06x Role x%x\n", + lport, + rpinfo.node_name, rpinfo.port_name, + rpinfo.port_id, rpinfo.port_role); + } else { + lpfc_printf_vlog(vport, KERN_ERR, + LOG_NVME_DISC | LOG_NODE, + "6031 RemotePort Registration failed " + "err: %d, DID x%06x\n", + ret, ndlp->nlp_DID); + } + } else { + ret = -EINVAL; + lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, + "6027 Unknown nlp_type x%x on DID x%06x " + "ndlp %p. Not Registering nvme rport\n", + ndlp->nlp_type, ndlp->nlp_DID, ndlp); + } + return ret; +} + +/* lpfc_nvme_unregister_port - unbind the DID and port_role from this rport. + * + * There is no notion of Devloss or rport recovery from the current + * nvme_transport perspective. Loss of an rport just means IO cannot + * be sent and recovery is completely up to the initator. + * For now, the driver just unbinds the DID and port_role so that + * no further IO can be issued. Changes are planned for later. + * + * Notes - the ndlp reference count is not decremented here since + * since there is no nvme_transport api for devloss. Node ref count + * is only adjusted in driver unload. + */ +void +lpfc_nvme_unregister_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) +{ + int ret; + struct nvme_fc_local_port *localport; + struct lpfc_nvme_lport *lport; + struct lpfc_nvme_rport *rport; + struct nvme_fc_remote_port *remoteport; + + localport = vport->localport; + + /* This is fundamental error. The localport is always + * available until driver unload. Just exit. + */ + if (!localport) + return; + + lport = (struct lpfc_nvme_lport *)localport->private; + if (!lport) + goto input_err; + + rport = ndlp->nrport; + if (!rport) + goto input_err; + + remoteport = rport->remoteport; + lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, + "6033 Unreg nvme remoteport %p, portname x%llx, " + "port_id x%06x, portstate x%x port type x%x\n", + remoteport, remoteport->port_name, + remoteport->port_id, remoteport->port_state, + ndlp->nlp_type); + + /* Sanity check ndlp type. Only call for NVME ports. Don't + * clear any rport state until the transport calls back. + */ + if (ndlp->nlp_type & (NLP_NVME_TARGET | NLP_NVME_INITIATOR)) { + init_completion(&rport->rport_unreg_done); + ret = nvme_fc_unregister_remoteport(remoteport); + if (ret != 0) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC, + "6167 NVME unregister failed %d " + "port_state x%x\n", + ret, remoteport->port_state); + } + + /* Wait for the driver's delete completion routine to finish + * before proceeding. This guarantees the transport and driver + * have completed the unreg process. + */ + ret = wait_for_completion_timeout(&rport->rport_unreg_done, 5); + if (ret == 0) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC, + "6169 Unreg nvme wait failed %d\n", + ret); + } + } + return; + + input_err: + lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC, + "6168: State error: lport %p, rport%p FCID x%06x\n", + vport->localport, ndlp->rport, ndlp->nlp_DID); +} diff --git a/drivers/scsi/lpfc/lpfc_nvme.h b/drivers/scsi/lpfc/lpfc_nvme.h index 2b167933fd26..4cc51086a5f7 100644 --- a/drivers/scsi/lpfc/lpfc_nvme.h +++ b/drivers/scsi/lpfc/lpfc_nvme.h @@ -29,6 +29,12 @@ #define LPFC_NVME_ERSP_LEN 0x20 +struct lpfc_nvme_qhandle { + uint32_t index; /* WQ index to use */ + uint32_t qidx; /* queue index passed to create */ + uint32_t cpu_id; /* current cpu id at time of create */ +}; + /* Declare nvme-based local and remote port definitions. */ struct lpfc_nvme_lport { struct lpfc_vport *vport; diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c index 52fa5c77f3bc..ccda1f73ae84 100644 --- a/drivers/scsi/lpfc/lpfc_sli.c +++ b/drivers/scsi/lpfc/lpfc_sli.c @@ -6795,6 +6795,22 @@ lpfc_sli4_hba_setup(struct lpfc_hba *phba) } } + if ((phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) && + (phba->nvmet_support == 0)) { + + /* register the allocated nvme sgl pool to the port */ + rc = lpfc_repost_nvme_sgl_list(phba); + if (unlikely(rc)) { + lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, + "6116 Error %d during nvme sgl post " + "operation\n", rc); + /* Some NVME buffers were moved to abort nvme list */ + /* A pci function reset will repost them */ + rc = -ENODEV; + goto out_destroy_queue; + } + } + /* Post the rpi header region to the device. */ rc = lpfc_sli4_post_all_rpi_hdrs(phba); if (unlikely(rc)) { @@ -10492,10 +10508,7 @@ lpfc_sli4_abort_nvme_io(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, /* ABTS WQE must go to the same WQ as the WQE to be aborted */ abtsiocbp->iocb_flag |= LPFC_IO_NVME; abtsiocbp->vport = vport; - /* todo: assign wqe_cmpl to lpfc_nvme_abort_fcreq_cmpl - * subsequent patch will add routine. For now, just skip assignment - * as won't ever be called. - */ + abtsiocbp->wqe_cmpl = lpfc_nvme_abort_fcreq_cmpl; retval = lpfc_sli4_issue_wqe(phba, LPFC_FCP_RING, abtsiocbp); if (retval == IOCB_ERROR) { lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME, diff --git a/drivers/scsi/lpfc/lpfc_sli4.h b/drivers/scsi/lpfc/lpfc_sli4.h index b5b4f6b843c0..9cb8508b4b4b 100644 --- a/drivers/scsi/lpfc/lpfc_sli4.h +++ b/drivers/scsi/lpfc/lpfc_sli4.h @@ -753,6 +753,7 @@ int lpfc_sli4_queue_setup(struct lpfc_hba *); void lpfc_sli4_queue_unset(struct lpfc_hba *); int lpfc_sli4_post_sgl(struct lpfc_hba *, dma_addr_t, dma_addr_t, uint16_t); int lpfc_sli4_repost_scsi_sgl_list(struct lpfc_hba *); +int lpfc_repost_nvme_sgl_list(struct lpfc_hba *phba); uint16_t lpfc_sli4_next_xritag(struct lpfc_hba *); void lpfc_sli4_free_xri(struct lpfc_hba *, int); int lpfc_sli4_post_async_mbox(struct lpfc_hba *); diff --git a/drivers/scsi/lpfc/lpfc_vport.c b/drivers/scsi/lpfc/lpfc_vport.c index 07c7c5f9fdde..b0d94f2e5b44 100644 --- a/drivers/scsi/lpfc/lpfc_vport.c +++ b/drivers/scsi/lpfc/lpfc_vport.c @@ -403,7 +403,21 @@ lpfc_vport_create(struct fc_vport *fc_vport, bool disable) vport->fdmi_port_mask = phba->pport->fdmi_port_mask; } - /* todo: init: register port with nvme */ + if ((phba->nvmet_support == 0) && + ((phba->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || + (phba->cfg_enable_fc4_type == LPFC_ENABLE_NVME))) { + /* Create NVME binding with nvme_fc_transport. This + * ensures the vport is initialized. + */ + rc = lpfc_nvme_create_localport(vport); + if (rc) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "6003 %s status x%x\n", + "NVME registration failed, ", + rc); + goto error_out; + } + } /* * In SLI4, the vpi must be activated before it can be used -- 2.20.1