/******************************************************************* * This file is part of the Emulex Linux Device Driver for * * Fibre Channel Host Bus Adapters. * * Copyright (C) 2004-2012 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 #include #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_scsi.h" #include "lpfc.h" #include "lpfc_logmsg.h" #include "lpfc_crtn.h" #include "lpfc_vport.h" #include "lpfc_version.h" char *_dump_buf_data; unsigned long _dump_buf_data_order; char *_dump_buf_dif; unsigned long _dump_buf_dif_order; spinlock_t _dump_buf_lock; /* Used when mapping IRQ vectors in a driver centric manner */ uint16_t lpfc_used_cpu[LPFC_MAX_CPU]; static void lpfc_get_hba_model_desc(struct lpfc_hba *, uint8_t *, uint8_t *); static int lpfc_post_rcv_buf(struct lpfc_hba *); static int lpfc_sli4_queue_verify(struct lpfc_hba *); static int lpfc_create_bootstrap_mbox(struct lpfc_hba *); static int lpfc_setup_endian_order(struct lpfc_hba *); static void lpfc_destroy_bootstrap_mbox(struct lpfc_hba *); static void lpfc_free_els_sgl_list(struct lpfc_hba *); static void lpfc_init_sgl_list(struct lpfc_hba *); static int lpfc_init_active_sgl_array(struct lpfc_hba *); static void lpfc_free_active_sgl(struct lpfc_hba *); static int lpfc_hba_down_post_s3(struct lpfc_hba *phba); static int lpfc_hba_down_post_s4(struct lpfc_hba *phba); static int lpfc_sli4_cq_event_pool_create(struct lpfc_hba *); static void lpfc_sli4_cq_event_pool_destroy(struct lpfc_hba *); static void lpfc_sli4_cq_event_release_all(struct lpfc_hba *); static void lpfc_sli4_disable_intr(struct lpfc_hba *); static uint32_t lpfc_sli4_enable_intr(struct lpfc_hba *, uint32_t); static struct scsi_transport_template *lpfc_transport_template = NULL; static struct scsi_transport_template *lpfc_vport_transport_template = NULL; static DEFINE_IDR(lpfc_hba_index); /** * lpfc_config_port_prep - Perform lpfc initialization prior to config port * @phba: pointer to lpfc hba data structure. * * This routine will do LPFC initialization prior to issuing the CONFIG_PORT * mailbox command. It retrieves the revision information from the HBA and * collects the Vital Product Data (VPD) about the HBA for preparing the * configuration of the HBA. * * Return codes: * 0 - success. * -ERESTART - requests the SLI layer to reset the HBA and try again. * Any other value - indicates an error. **/ int lpfc_config_port_prep(struct lpfc_hba *phba) { lpfc_vpd_t *vp = &phba->vpd; int i = 0, rc; LPFC_MBOXQ_t *pmb; MAILBOX_t *mb; char *lpfc_vpd_data = NULL; uint16_t offset = 0; static char licensed[56] = "key unlock for use with gnu public licensed code only\0"; static int init_key = 1; pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!pmb) { phba->link_state = LPFC_HBA_ERROR; return -ENOMEM; } mb = &pmb->u.mb; phba->link_state = LPFC_INIT_MBX_CMDS; if (lpfc_is_LC_HBA(phba->pcidev->device)) { if (init_key) { uint32_t *ptext = (uint32_t *) licensed; for (i = 0; i < 56; i += sizeof (uint32_t), ptext++) *ptext = cpu_to_be32(*ptext); init_key = 0; } lpfc_read_nv(phba, pmb); memset((char*)mb->un.varRDnvp.rsvd3, 0, sizeof (mb->un.varRDnvp.rsvd3)); memcpy((char*)mb->un.varRDnvp.rsvd3, licensed, sizeof (licensed)); rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL); if (rc != MBX_SUCCESS) { lpfc_printf_log(phba, KERN_ERR, LOG_MBOX, "0324 Config Port initialization " "error, mbxCmd x%x READ_NVPARM, " "mbxStatus x%x\n", mb->mbxCommand, mb->mbxStatus); mempool_free(pmb, phba->mbox_mem_pool); return -ERESTART; } memcpy(phba->wwnn, (char *)mb->un.varRDnvp.nodename, sizeof(phba->wwnn)); memcpy(phba->wwpn, (char *)mb->un.varRDnvp.portname, sizeof(phba->wwpn)); } phba->sli3_options = 0x0; /* Setup and issue mailbox READ REV command */ lpfc_read_rev(phba, pmb); rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL); if (rc != MBX_SUCCESS) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0439 Adapter failed to init, mbxCmd x%x " "READ_REV, mbxStatus x%x\n", mb->mbxCommand, mb->mbxStatus); mempool_free( pmb, phba->mbox_mem_pool); return -ERESTART; } /* * The value of rr must be 1 since the driver set the cv field to 1. * This setting requires the FW to set all revision fields. */ if (mb->un.varRdRev.rr == 0) { vp->rev.rBit = 0; lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0440 Adapter failed to init, READ_REV has " "missing revision information.\n"); mempool_free(pmb, phba->mbox_mem_pool); return -ERESTART; } if (phba->sli_rev == 3 && !mb->un.varRdRev.v3rsp) { mempool_free(pmb, phba->mbox_mem_pool); return -EINVAL; } /* Save information as VPD data */ vp->rev.rBit = 1; memcpy(&vp->sli3Feat, &mb->un.varRdRev.sli3Feat, sizeof(uint32_t)); vp->rev.sli1FwRev = mb->un.varRdRev.sli1FwRev; memcpy(vp->rev.sli1FwName, (char*) mb->un.varRdRev.sli1FwName, 16); vp->rev.sli2FwRev = mb->un.varRdRev.sli2FwRev; memcpy(vp->rev.sli2FwName, (char *) mb->un.varRdRev.sli2FwName, 16); vp->rev.biuRev = mb->un.varRdRev.biuRev; vp->rev.smRev = mb->un.varRdRev.smRev; vp->rev.smFwRev = mb->un.varRdRev.un.smFwRev; vp->rev.endecRev = mb->un.varRdRev.endecRev; vp->rev.fcphHigh = mb->un.varRdRev.fcphHigh; vp->rev.fcphLow = mb->un.varRdRev.fcphLow; vp->rev.feaLevelHigh = mb->un.varRdRev.feaLevelHigh; vp->rev.feaLevelLow = mb->un.varRdRev.feaLevelLow; vp->rev.postKernRev = mb->un.varRdRev.postKernRev; vp->rev.opFwRev = mb->un.varRdRev.opFwRev; /* If the sli feature level is less then 9, we must * tear down all RPIs and VPIs on link down if NPIV * is enabled. */ if (vp->rev.feaLevelHigh < 9) phba->sli3_options |= LPFC_SLI3_VPORT_TEARDOWN; if (lpfc_is_LC_HBA(phba->pcidev->device)) memcpy(phba->RandomData, (char *)&mb->un.varWords[24], sizeof (phba->RandomData)); /* Get adapter VPD information */ lpfc_vpd_data = kmalloc(DMP_VPD_SIZE, GFP_KERNEL); if (!lpfc_vpd_data) goto out_free_mbox; do { lpfc_dump_mem(phba, pmb, offset, DMP_REGION_VPD); rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL); if (rc != MBX_SUCCESS) { lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "0441 VPD not present on adapter, " "mbxCmd x%x DUMP VPD, mbxStatus x%x\n", mb->mbxCommand, mb->mbxStatus); mb->un.varDmp.word_cnt = 0; } /* dump mem may return a zero when finished or we got a * mailbox error, either way we are done. */ if (mb->un.varDmp.word_cnt == 0) break; if (mb->un.varDmp.word_cnt > DMP_VPD_SIZE - offset) mb->un.varDmp.word_cnt = DMP_VPD_SIZE - offset; lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET, lpfc_vpd_data + offset, mb->un.varDmp.word_cnt); offset += mb->un.varDmp.word_cnt; } while (mb->un.varDmp.word_cnt && offset < DMP_VPD_SIZE); lpfc_parse_vpd(phba, lpfc_vpd_data, offset); kfree(lpfc_vpd_data); out_free_mbox: mempool_free(pmb, phba->mbox_mem_pool); return 0; } /** * lpfc_config_async_cmpl - Completion handler for config async event mbox cmd * @phba: pointer to lpfc hba data structure. * @pmboxq: pointer to the driver internal queue element for mailbox command. * * This is the completion handler for driver's configuring asynchronous event * mailbox command to the device. If the mailbox command returns successfully, * it will set internal async event support flag to 1; otherwise, it will * set internal async event support flag to 0. **/ static void lpfc_config_async_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq) { if (pmboxq->u.mb.mbxStatus == MBX_SUCCESS) phba->temp_sensor_support = 1; else phba->temp_sensor_support = 0; mempool_free(pmboxq, phba->mbox_mem_pool); return; } /** * lpfc_dump_wakeup_param_cmpl - dump memory mailbox command completion handler * @phba: pointer to lpfc hba data structure. * @pmboxq: pointer to the driver internal queue element for mailbox command. * * This is the completion handler for dump mailbox command for getting * wake up parameters. When this command complete, the response contain * Option rom version of the HBA. This function translate the version number * into a human readable string and store it in OptionROMVersion. **/ static void lpfc_dump_wakeup_param_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq) { struct prog_id *prg; uint32_t prog_id_word; char dist = ' '; /* character array used for decoding dist type. */ char dist_char[] = "nabx"; if (pmboxq->u.mb.mbxStatus != MBX_SUCCESS) { mempool_free(pmboxq, phba->mbox_mem_pool); return; } prg = (struct prog_id *) &prog_id_word; /* word 7 contain option rom version */ prog_id_word = pmboxq->u.mb.un.varWords[7]; /* Decode the Option rom version word to a readable string */ if (prg->dist < 4) dist = dist_char[prg->dist]; if ((prg->dist == 3) && (prg->num == 0)) sprintf(phba->OptionROMVersion, "%d.%d%d", prg->ver, prg->rev, prg->lev); else sprintf(phba->OptionROMVersion, "%d.%d%d%c%d", prg->ver, prg->rev, prg->lev, dist, prg->num); mempool_free(pmboxq, phba->mbox_mem_pool); return; } /** * lpfc_update_vport_wwn - Updates the fc_nodename, fc_portname, * cfg_soft_wwnn, cfg_soft_wwpn * @vport: pointer to lpfc vport data structure. * * * Return codes * None. **/ void lpfc_update_vport_wwn(struct lpfc_vport *vport) { /* If the soft name exists then update it using the service params */ if (vport->phba->cfg_soft_wwnn) u64_to_wwn(vport->phba->cfg_soft_wwnn, vport->fc_sparam.nodeName.u.wwn); if (vport->phba->cfg_soft_wwpn) u64_to_wwn(vport->phba->cfg_soft_wwpn, vport->fc_sparam.portName.u.wwn); /* * If the name is empty or there exists a soft name * then copy the service params name, otherwise use the fc name */ if (vport->fc_nodename.u.wwn[0] == 0 || vport->phba->cfg_soft_wwnn) memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName, sizeof(struct lpfc_name)); else memcpy(&vport->fc_sparam.nodeName, &vport->fc_nodename, sizeof(struct lpfc_name)); if (vport->fc_portname.u.wwn[0] == 0 || vport->phba->cfg_soft_wwpn) memcpy(&vport->fc_portname, &vport->fc_sparam.portName, sizeof(struct lpfc_name)); else memcpy(&vport->fc_sparam.portName, &vport->fc_portname, sizeof(struct lpfc_name)); } /** * lpfc_config_port_post - Perform lpfc initialization after config port * @phba: pointer to lpfc hba data structure. * * This routine will do LPFC initialization after the CONFIG_PORT mailbox * command call. It performs all internal resource and state setups on the * port: post IOCB buffers, enable appropriate host interrupt attentions, * ELS ring timers, etc. * * Return codes * 0 - success. * Any other value - error. **/ int lpfc_config_port_post(struct lpfc_hba *phba) { struct lpfc_vport *vport = phba->pport; struct Scsi_Host *shost = lpfc_shost_from_vport(vport); LPFC_MBOXQ_t *pmb; MAILBOX_t *mb; struct lpfc_dmabuf *mp; struct lpfc_sli *psli = &phba->sli; uint32_t status, timeout; int i, j; int rc; spin_lock_irq(&phba->hbalock); /* * If the Config port completed correctly the HBA is not * over heated any more. */ if (phba->over_temp_state == HBA_OVER_TEMP) phba->over_temp_state = HBA_NORMAL_TEMP; spin_unlock_irq(&phba->hbalock); pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!pmb) { phba->link_state = LPFC_HBA_ERROR; return -ENOMEM; } mb = &pmb->u.mb; /* Get login parameters for NID. */ rc = lpfc_read_sparam(phba, pmb, 0); if (rc) { mempool_free(pmb, phba->mbox_mem_pool); return -ENOMEM; } pmb->vport = vport; if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0448 Adapter failed init, mbxCmd x%x " "READ_SPARM mbxStatus x%x\n", mb->mbxCommand, mb->mbxStatus); phba->link_state = LPFC_HBA_ERROR; mp = (struct lpfc_dmabuf *) pmb->context1; mempool_free(pmb, phba->mbox_mem_pool); lpfc_mbuf_free(phba, mp->virt, mp->phys); kfree(mp); return -EIO; } mp = (struct lpfc_dmabuf *) pmb->context1; memcpy(&vport->fc_sparam, mp->virt, sizeof (struct serv_parm)); lpfc_mbuf_free(phba, mp->virt, mp->phys); kfree(mp); pmb->context1 = NULL; lpfc_update_vport_wwn(vport); /* Update the fc_host data structures with new wwn. */ fc_host_node_name(shost) = wwn_to_u64(vport->fc_nodename.u.wwn); fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn); fc_host_max_npiv_vports(shost) = phba->max_vpi; /* If no serial number in VPD data, use low 6 bytes of WWNN */ /* This should be consolidated into parse_vpd ? - mr */ if (phba->SerialNumber[0] == 0) { uint8_t *outptr; outptr = &vport->fc_nodename.u.s.IEEE[0]; for (i = 0; i < 12; i++) { status = *outptr++; j = ((status & 0xf0) >> 4); if (j <= 9) phba->SerialNumber[i] = (char)((uint8_t) 0x30 + (uint8_t) j); else phba->SerialNumber[i] = (char)((uint8_t) 0x61 + (uint8_t) (j - 10)); i++; j = (status & 0xf); if (j <= 9) phba->SerialNumber[i] = (char)((uint8_t) 0x30 + (uint8_t) j); else phba->SerialNumber[i] = (char)((uint8_t) 0x61 + (uint8_t) (j - 10)); } } lpfc_read_config(phba, pmb); pmb->vport = vport; if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0453 Adapter failed to init, mbxCmd x%x " "READ_CONFIG, mbxStatus x%x\n", mb->mbxCommand, mb->mbxStatus); phba->link_state = LPFC_HBA_ERROR; mempool_free( pmb, phba->mbox_mem_pool); return -EIO; } /* Check if the port is disabled */ lpfc_sli_read_link_ste(phba); /* Reset the DFT_HBA_Q_DEPTH to the max xri */ if (phba->cfg_hba_queue_depth > (mb->un.varRdConfig.max_xri+1)) phba->cfg_hba_queue_depth = (mb->un.varRdConfig.max_xri + 1) - lpfc_sli4_get_els_iocb_cnt(phba); phba->lmt = mb->un.varRdConfig.lmt; /* Get the default values for Model Name and Description */ lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc); phba->link_state = LPFC_LINK_DOWN; /* Only process IOCBs on ELS ring till hba_state is READY */ if (psli->ring[psli->extra_ring].sli.sli3.cmdringaddr) psli->ring[psli->extra_ring].flag |= LPFC_STOP_IOCB_EVENT; if (psli->ring[psli->fcp_ring].sli.sli3.cmdringaddr) psli->ring[psli->fcp_ring].flag |= LPFC_STOP_IOCB_EVENT; if (psli->ring[psli->next_ring].sli.sli3.cmdringaddr) psli->ring[psli->next_ring].flag |= LPFC_STOP_IOCB_EVENT; /* Post receive buffers for desired rings */ if (phba->sli_rev != 3) lpfc_post_rcv_buf(phba); /* * Configure HBA MSI-X attention conditions to messages if MSI-X mode */ if (phba->intr_type == MSIX) { rc = lpfc_config_msi(phba, pmb); if (rc) { mempool_free(pmb, phba->mbox_mem_pool); return -EIO; } rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL); if (rc != MBX_SUCCESS) { lpfc_printf_log(phba, KERN_ERR, LOG_MBOX, "0352 Config MSI mailbox command " "failed, mbxCmd x%x, mbxStatus x%x\n", pmb->u.mb.mbxCommand, pmb->u.mb.mbxStatus); mempool_free(pmb, phba->mbox_mem_pool); return -EIO; } } spin_lock_irq(&phba->hbalock); /* Initialize ERATT handling flag */ phba->hba_flag &= ~HBA_ERATT_HANDLED; /* Enable appropriate host interrupts */ if (lpfc_readl(phba->HCregaddr, &status)) { spin_unlock_irq(&phba->hbalock); return -EIO; } status |= HC_MBINT_ENA | HC_ERINT_ENA | HC_LAINT_ENA; if (psli->num_rings > 0) status |= HC_R0INT_ENA; if (psli->num_rings > 1) status |= HC_R1INT_ENA; if (psli->num_rings > 2) status |= HC_R2INT_ENA; if (psli->num_rings > 3) status |= HC_R3INT_ENA; if ((phba->cfg_poll & ENABLE_FCP_RING_POLLING) && (phba->cfg_poll & DISABLE_FCP_RING_INT)) status &= ~(HC_R0INT_ENA); writel(status, phba->HCregaddr); readl(phba->HCregaddr); /* flush */ spin_unlock_irq(&phba->hbalock); /* Set up ring-0 (ELS) timer */ timeout = phba->fc_ratov * 2; mod_timer(&vport->els_tmofunc, jiffies + msecs_to_jiffies(1000 * timeout)); /* Set up heart beat (HB) timer */ mod_timer(&phba->hb_tmofunc, jiffies + msecs_to_jiffies(1000 * LPFC_HB_MBOX_INTERVAL)); phba->hb_outstanding = 0; phba->last_completion_time = jiffies; /* Set up error attention (ERATT) polling timer */ mod_timer(&phba->eratt_poll, jiffies + msecs_to_jiffies(1000 * LPFC_ERATT_POLL_INTERVAL)); if (phba->hba_flag & LINK_DISABLED) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2598 Adapter Link is disabled.\n"); lpfc_down_link(phba, pmb); pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT); if ((rc != MBX_SUCCESS) && (rc != MBX_BUSY)) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2599 Adapter failed to issue DOWN_LINK" " mbox command rc 0x%x\n", rc); mempool_free(pmb, phba->mbox_mem_pool); return -EIO; } } else if (phba->cfg_suppress_link_up == LPFC_INITIALIZE_LINK) { mempool_free(pmb, phba->mbox_mem_pool); rc = phba->lpfc_hba_init_link(phba, MBX_NOWAIT); if (rc) return rc; } /* MBOX buffer will be freed in mbox compl */ pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!pmb) { phba->link_state = LPFC_HBA_ERROR; return -ENOMEM; } lpfc_config_async(phba, pmb, LPFC_ELS_RING); pmb->mbox_cmpl = lpfc_config_async_cmpl; pmb->vport = phba->pport; rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT); if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0456 Adapter failed to issue " "ASYNCEVT_ENABLE mbox status x%x\n", rc); mempool_free(pmb, phba->mbox_mem_pool); } /* Get Option rom version */ pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!pmb) { phba->link_state = LPFC_HBA_ERROR; return -ENOMEM; } lpfc_dump_wakeup_param(phba, pmb); pmb->mbox_cmpl = lpfc_dump_wakeup_param_cmpl; pmb->vport = phba->pport; rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT); if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0435 Adapter failed " "to get Option ROM version status x%x\n", rc); mempool_free(pmb, phba->mbox_mem_pool); } return 0; } /** * lpfc_hba_init_link - Initialize the FC link * @phba: pointer to lpfc hba data structure. * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT * * This routine will issue the INIT_LINK mailbox command call. * It is available to other drivers through the lpfc_hba data * structure for use as a delayed link up mechanism with the * module parameter lpfc_suppress_link_up. * * Return code * 0 - success * Any other value - error **/ int lpfc_hba_init_link(struct lpfc_hba *phba, uint32_t flag) { return lpfc_hba_init_link_fc_topology(phba, phba->cfg_topology, flag); } /** * lpfc_hba_init_link_fc_topology - Initialize FC link with desired topology * @phba: pointer to lpfc hba data structure. * @fc_topology: desired fc topology. * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT * * This routine will issue the INIT_LINK mailbox command call. * It is available to other drivers through the lpfc_hba data * structure for use as a delayed link up mechanism with the * module parameter lpfc_suppress_link_up. * * Return code * 0 - success * Any other value - error **/ int lpfc_hba_init_link_fc_topology(struct lpfc_hba *phba, uint32_t fc_topology, uint32_t flag) { struct lpfc_vport *vport = phba->pport; LPFC_MBOXQ_t *pmb; MAILBOX_t *mb; int rc; pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!pmb) { phba->link_state = LPFC_HBA_ERROR; return -ENOMEM; } mb = &pmb->u.mb; pmb->vport = vport; if ((phba->cfg_link_speed > LPFC_USER_LINK_SPEED_MAX) || ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_1G) && !(phba->lmt & LMT_1Gb)) || ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_2G) && !(phba->lmt & LMT_2Gb)) || ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_4G) && !(phba->lmt & LMT_4Gb)) || ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_8G) && !(phba->lmt & LMT_8Gb)) || ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_10G) && !(phba->lmt & LMT_10Gb)) || ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_16G) && !(phba->lmt & LMT_16Gb))) { /* Reset link speed to auto */ lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, "1302 Invalid speed for this board:%d " "Reset link speed to auto.\n", phba->cfg_link_speed); phba->cfg_link_speed = LPFC_USER_LINK_SPEED_AUTO; } lpfc_init_link(phba, pmb, fc_topology, phba->cfg_link_speed); pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; if (phba->sli_rev < LPFC_SLI_REV4) lpfc_set_loopback_flag(phba); rc = lpfc_sli_issue_mbox(phba, pmb, flag); if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0498 Adapter failed to init, mbxCmd x%x " "INIT_LINK, mbxStatus x%x\n", mb->mbxCommand, mb->mbxStatus); if (phba->sli_rev <= LPFC_SLI_REV3) { /* Clear all interrupt enable conditions */ writel(0, phba->HCregaddr); readl(phba->HCregaddr); /* flush */ /* Clear all pending interrupts */ writel(0xffffffff, phba->HAregaddr); readl(phba->HAregaddr); /* flush */ } phba->link_state = LPFC_HBA_ERROR; if (rc != MBX_BUSY || flag == MBX_POLL) mempool_free(pmb, phba->mbox_mem_pool); return -EIO; } phba->cfg_suppress_link_up = LPFC_INITIALIZE_LINK; if (flag == MBX_POLL) mempool_free(pmb, phba->mbox_mem_pool); return 0; } /** * lpfc_hba_down_link - this routine downs the FC link * @phba: pointer to lpfc hba data structure. * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT * * This routine will issue the DOWN_LINK mailbox command call. * It is available to other drivers through the lpfc_hba data * structure for use to stop the link. * * Return code * 0 - success * Any other value - error **/ int lpfc_hba_down_link(struct lpfc_hba *phba, uint32_t flag) { LPFC_MBOXQ_t *pmb; int rc; pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!pmb) { phba->link_state = LPFC_HBA_ERROR; return -ENOMEM; } lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0491 Adapter Link is disabled.\n"); lpfc_down_link(phba, pmb); pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; rc = lpfc_sli_issue_mbox(phba, pmb, flag); if ((rc != MBX_SUCCESS) && (rc != MBX_BUSY)) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2522 Adapter failed to issue DOWN_LINK" " mbox command rc 0x%x\n", rc); mempool_free(pmb, phba->mbox_mem_pool); return -EIO; } if (flag == MBX_POLL) mempool_free(pmb, phba->mbox_mem_pool); return 0; } /** * lpfc_hba_down_prep - Perform lpfc uninitialization prior to HBA reset * @phba: pointer to lpfc HBA data structure. * * This routine will do LPFC uninitialization before the HBA is reset when * bringing down the SLI Layer. * * Return codes * 0 - success. * Any other value - error. **/ int lpfc_hba_down_prep(struct lpfc_hba *phba) { struct lpfc_vport **vports; int i; if (phba->sli_rev <= LPFC_SLI_REV3) { /* Disable interrupts */ writel(0, phba->HCregaddr); readl(phba->HCregaddr); /* flush */ } if (phba->pport->load_flag & FC_UNLOADING) lpfc_cleanup_discovery_resources(phba->pport); else { vports = lpfc_create_vport_work_array(phba); if (vports != NULL) for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) lpfc_cleanup_discovery_resources(vports[i]); lpfc_destroy_vport_work_array(phba, vports); } return 0; } /** * lpfc_hba_down_post_s3 - Perform lpfc uninitialization after HBA reset * @phba: pointer to lpfc HBA data structure. * * This routine will do uninitialization after the HBA is reset when bring * down the SLI Layer. * * Return codes * 0 - success. * Any other value - error. **/ static int lpfc_hba_down_post_s3(struct lpfc_hba *phba) { struct lpfc_sli *psli = &phba->sli; struct lpfc_sli_ring *pring; struct lpfc_dmabuf *mp, *next_mp; LIST_HEAD(completions); int i; if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) lpfc_sli_hbqbuf_free_all(phba); else { /* Cleanup preposted buffers on the ELS ring */ pring = &psli->ring[LPFC_ELS_RING]; list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) { list_del(&mp->list); pring->postbufq_cnt--; lpfc_mbuf_free(phba, mp->virt, mp->phys); kfree(mp); } } spin_lock_irq(&phba->hbalock); for (i = 0; i < psli->num_rings; i++) { pring = &psli->ring[i]; /* At this point in time the HBA is either reset or DOA. Either * way, nothing should be on txcmplq as it will NEVER complete. */ list_splice_init(&pring->txcmplq, &completions); spin_unlock_irq(&phba->hbalock); /* Cancel all the IOCBs from the completions list */ lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED); lpfc_sli_abort_iocb_ring(phba, pring); spin_lock_irq(&phba->hbalock); } spin_unlock_irq(&phba->hbalock); return 0; } /** * lpfc_hba_down_post_s4 - Perform lpfc uninitialization after HBA reset * @phba: pointer to lpfc HBA data structure. * * This routine will do uninitialization after the HBA is reset when bring * down the SLI Layer. * * Return codes * 0 - success. * Any other value - error. **/ static int lpfc_hba_down_post_s4(struct lpfc_hba *phba) { struct lpfc_scsi_buf *psb, *psb_next; LIST_HEAD(aborts); int ret; unsigned long iflag = 0; struct lpfc_sglq *sglq_entry = NULL; ret = lpfc_hba_down_post_s3(phba); if (ret) return ret; /* At this point in time the HBA is either reset or DOA. Either * way, nothing should be on lpfc_abts_els_sgl_list, it needs to be * on the lpfc_sgl_list so that it can either be freed if the * driver is unloading or reposted if the driver is restarting * the port. */ spin_lock_irq(&phba->hbalock); /* required for lpfc_sgl_list and */ /* scsl_buf_list */ /* abts_sgl_list_lock required because worker thread uses this * list. */ spin_lock(&phba->sli4_hba.abts_sgl_list_lock); list_for_each_entry(sglq_entry, &phba->sli4_hba.lpfc_abts_els_sgl_list, list) sglq_entry->state = SGL_FREED; list_splice_init(&phba->sli4_hba.lpfc_abts_els_sgl_list, &phba->sli4_hba.lpfc_sgl_list); spin_unlock(&phba->sli4_hba.abts_sgl_list_lock); /* abts_scsi_buf_list_lock required because worker thread uses this * list. */ spin_lock(&phba->sli4_hba.abts_scsi_buf_list_lock); list_splice_init(&phba->sli4_hba.lpfc_abts_scsi_buf_list, &aborts); spin_unlock(&phba->sli4_hba.abts_scsi_buf_list_lock); spin_unlock_irq(&phba->hbalock); list_for_each_entry_safe(psb, psb_next, &aborts, list) { psb->pCmd = NULL; psb->status = IOSTAT_SUCCESS; } spin_lock_irqsave(&phba->scsi_buf_list_put_lock, iflag); list_splice(&aborts, &phba->lpfc_scsi_buf_list_put); spin_unlock_irqrestore(&phba->scsi_buf_list_put_lock, iflag); return 0; } /** * lpfc_hba_down_post - Wrapper func for hba down post routine * @phba: pointer to lpfc HBA data structure. * * This routine wraps the actual SLI3 or SLI4 routine for performing * uninitialization after the HBA is reset when bring down the SLI Layer. * * Return codes * 0 - success. * Any other value - error. **/ int lpfc_hba_down_post(struct lpfc_hba *phba) { return (*phba->lpfc_hba_down_post)(phba); } /** * lpfc_hb_timeout - The HBA-timer timeout handler * @ptr: unsigned long holds the pointer to lpfc hba data structure. * * This is the HBA-timer timeout handler registered to the lpfc driver. When * this timer fires, a HBA timeout event shall be posted to the lpfc driver * work-port-events bitmap and the worker thread is notified. This timeout * event will be used by the worker thread to invoke the actual timeout * handler routine, lpfc_hb_timeout_handler. Any periodical operations will * be performed in the timeout handler and the HBA timeout event bit shall * be cleared by the worker thread after it has taken the event bitmap out. **/ static void lpfc_hb_timeout(unsigned long ptr) { struct lpfc_hba *phba; uint32_t tmo_posted; unsigned long iflag; phba = (struct lpfc_hba *)ptr; /* Check for heart beat timeout conditions */ spin_lock_irqsave(&phba->pport->work_port_lock, iflag); tmo_posted = phba->pport->work_port_events & WORKER_HB_TMO; if (!tmo_posted) phba->pport->work_port_events |= WORKER_HB_TMO; spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag); /* Tell the worker thread there is work to do */ if (!tmo_posted) lpfc_worker_wake_up(phba); return; } /** * lpfc_rrq_timeout - The RRQ-timer timeout handler * @ptr: unsigned long holds the pointer to lpfc hba data structure. * * This is the RRQ-timer timeout handler registered to the lpfc driver. When * this timer fires, a RRQ timeout event shall be posted to the lpfc driver * work-port-events bitmap and the worker thread is notified. This timeout * event will be used by the worker thread to invoke the actual timeout * handler routine, lpfc_rrq_handler. Any periodical operations will * be performed in the timeout handler and the RRQ timeout event bit shall * be cleared by the worker thread after it has taken the event bitmap out. **/ static void lpfc_rrq_timeout(unsigned long ptr) { struct lpfc_hba *phba; unsigned long iflag; phba = (struct lpfc_hba *)ptr; spin_lock_irqsave(&phba->pport->work_port_lock, iflag); phba->hba_flag |= HBA_RRQ_ACTIVE; spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag); lpfc_worker_wake_up(phba); } /** * lpfc_hb_mbox_cmpl - The lpfc heart-beat mailbox command callback function * @phba: pointer to lpfc hba data structure. * @pmboxq: pointer to the driver internal queue element for mailbox command. * * This is the callback function to the lpfc heart-beat mailbox command. * If configured, the lpfc driver issues the heart-beat mailbox command to * the HBA every LPFC_HB_MBOX_INTERVAL (current 5) seconds. At the time the * heart-beat mailbox command is issued, the driver shall set up heart-beat * timeout timer to LPFC_HB_MBOX_TIMEOUT (current 30) seconds and marks * heart-beat outstanding state. Once the mailbox command comes back and * no error conditions detected, the heart-beat mailbox command timer is * reset to LPFC_HB_MBOX_INTERVAL seconds and the heart-beat outstanding * state is cleared for the next heart-beat. If the timer expired with the * heart-beat outstanding state set, the driver will put the HBA offline. **/ static void lpfc_hb_mbox_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq) { unsigned long drvr_flag; spin_lock_irqsave(&phba->hbalock, drvr_flag); phba->hb_outstanding = 0; spin_unlock_irqrestore(&phba->hbalock, drvr_flag); /* Check and reset heart-beat timer is necessary */ mempool_free(pmboxq, phba->mbox_mem_pool); if (!(phba->pport->fc_flag & FC_OFFLINE_MODE) && !(phba->link_state == LPFC_HBA_ERROR) && !(phba->pport->load_flag & FC_UNLOADING)) mod_timer(&phba->hb_tmofunc, jiffies + msecs_to_jiffies(1000 * LPFC_HB_MBOX_INTERVAL)); return; } /** * lpfc_hb_timeout_handler - The HBA-timer timeout handler * @phba: pointer to lpfc hba data structure. * * This is the actual HBA-timer timeout handler to be invoked by the worker * thread whenever the HBA timer fired and HBA-timeout event posted. This * handler performs any periodic operations needed for the device. If such * periodic event has already been attended to either in the interrupt handler * or by processing slow-ring or fast-ring events within the HBA-timer * timeout window (LPFC_HB_MBOX_INTERVAL), this handler just simply resets * the timer for the next timeout period. If lpfc heart-beat mailbox command * is configured and there is no heart-beat mailbox command outstanding, a * heart-beat mailbox is issued and timer set properly. Otherwise, if there * has been a heart-beat mailbox command outstanding, the HBA shall be put * to offline. **/ void lpfc_hb_timeout_handler(struct lpfc_hba *phba) { struct lpfc_vport **vports; LPFC_MBOXQ_t *pmboxq; struct lpfc_dmabuf *buf_ptr; int retval, i; struct lpfc_sli *psli = &phba->sli; LIST_HEAD(completions); vports = lpfc_create_vport_work_array(phba); if (vports != NULL) for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) lpfc_rcv_seq_check_edtov(vports[i]); lpfc_destroy_vport_work_array(phba, vports); if ((phba->link_state == LPFC_HBA_ERROR) || (phba->pport->load_flag & FC_UNLOADING) || (phba->pport->fc_flag & FC_OFFLINE_MODE)) return; spin_lock_irq(&phba->pport->work_port_lock); if (time_after(phba->last_completion_time + msecs_to_jiffies(1000 * LPFC_HB_MBOX_INTERVAL), jiffies)) { spin_unlock_irq(&phba->pport->work_port_lock); if (!phba->hb_outstanding) mod_timer(&phba->hb_tmofunc, jiffies + msecs_to_jiffies(1000 * LPFC_HB_MBOX_INTERVAL)); else mod_timer(&phba->hb_tmofunc, jiffies + msecs_to_jiffies(1000 * LPFC_HB_MBOX_TIMEOUT)); return; } spin_unlock_irq(&phba->pport->work_port_lock); if (phba->elsbuf_cnt && (phba->elsbuf_cnt == phba->elsbuf_prev_cnt)) { spin_lock_irq(&phba->hbalock); list_splice_init(&phba->elsbuf, &completions); phba->elsbuf_cnt = 0; phba->elsbuf_prev_cnt = 0; spin_unlock_irq(&phba->hbalock); while (!list_empty(&completions)) { list_remove_head(&completions, buf_ptr, struct lpfc_dmabuf, list); lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys); kfree(buf_ptr); } } phba->elsbuf_prev_cnt = phba->elsbuf_cnt; /* If there is no heart beat outstanding, issue a heartbeat command */ if (phba->cfg_enable_hba_heartbeat) { if (!phba->hb_outstanding) { if ((!(psli->sli_flag & LPFC_SLI_MBOX_ACTIVE)) && (list_empty(&psli->mboxq))) { pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!pmboxq) { mod_timer(&phba->hb_tmofunc, jiffies + msecs_to_jiffies(1000 * LPFC_HB_MBOX_INTERVAL)); return; } lpfc_heart_beat(phba, pmboxq); pmboxq->mbox_cmpl = lpfc_hb_mbox_cmpl; pmboxq->vport = phba->pport; retval = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT); if (retval != MBX_BUSY && retval != MBX_SUCCESS) { mempool_free(pmboxq, phba->mbox_mem_pool); mod_timer(&phba->hb_tmofunc, jiffies + msecs_to_jiffies(1000 * LPFC_HB_MBOX_INTERVAL)); return; } phba->skipped_hb = 0; phba->hb_outstanding = 1; } else if (time_before_eq(phba->last_completion_time, phba->skipped_hb)) { lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "2857 Last completion time not " " updated in %d ms\n", jiffies_to_msecs(jiffies - phba->last_completion_time)); } else phba->skipped_hb = jiffies; mod_timer(&phba->hb_tmofunc, jiffies + msecs_to_jiffies(1000 * LPFC_HB_MBOX_TIMEOUT)); return; } else { /* * If heart beat timeout called with hb_outstanding set * we need to give the hb mailbox cmd a chance to * complete or TMO. */ lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, "0459 Adapter heartbeat still out" "standing:last compl time was %d ms.\n", jiffies_to_msecs(jiffies - phba->last_completion_time)); mod_timer(&phba->hb_tmofunc, jiffies + msecs_to_jiffies(1000 * LPFC_HB_MBOX_TIMEOUT)); } } } /** * lpfc_offline_eratt - Bring lpfc offline on hardware error attention * @phba: pointer to lpfc hba data structure. * * This routine is called to bring the HBA offline when HBA hardware error * other than Port Error 6 has been detected. **/ static void lpfc_offline_eratt(struct lpfc_hba *phba) { struct lpfc_sli *psli = &phba->sli; spin_lock_irq(&phba->hbalock); psli->sli_flag &= ~LPFC_SLI_ACTIVE; spin_unlock_irq(&phba->hbalock); lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT); lpfc_offline(phba); lpfc_reset_barrier(phba); spin_lock_irq(&phba->hbalock); lpfc_sli_brdreset(phba); spin_unlock_irq(&phba->hbalock); lpfc_hba_down_post(phba); lpfc_sli_brdready(phba, HS_MBRDY); lpfc_unblock_mgmt_io(phba); phba->link_state = LPFC_HBA_ERROR; return; } /** * lpfc_sli4_offline_eratt - Bring lpfc offline on SLI4 hardware error attention * @phba: pointer to lpfc hba data structure. * * This routine is called to bring a SLI4 HBA offline when HBA hardware error * other than Port Error 6 has been detected. **/ void lpfc_sli4_offline_eratt(struct lpfc_hba *phba) { lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT); lpfc_offline(phba); lpfc_sli4_brdreset(phba); lpfc_hba_down_post(phba); lpfc_sli4_post_status_check(phba); lpfc_unblock_mgmt_io(phba); phba->link_state = LPFC_HBA_ERROR; } /** * lpfc_handle_deferred_eratt - The HBA hardware deferred error handler * @phba: pointer to lpfc hba data structure. * * This routine is invoked to handle the deferred HBA hardware error * conditions. This type of error is indicated by HBA by setting ER1 * and another ER bit in the host status register. The driver will * wait until the ER1 bit clears before handling the error condition. **/ static void lpfc_handle_deferred_eratt(struct lpfc_hba *phba) { uint32_t old_host_status = phba->work_hs; struct lpfc_sli_ring *pring; struct lpfc_sli *psli = &phba->sli; /* If the pci channel is offline, ignore possible errors, * since we cannot communicate with the pci card anyway. */ if (pci_channel_offline(phba->pcidev)) { spin_lock_irq(&phba->hbalock); phba->hba_flag &= ~DEFER_ERATT; spin_unlock_irq(&phba->hbalock); return; } lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0479 Deferred Adapter Hardware Error " "Data: x%x x%x x%x\n", phba->work_hs, phba->work_status[0], phba->work_status[1]); spin_lock_irq(&phba->hbalock); psli->sli_flag &= ~LPFC_SLI_ACTIVE; spin_unlock_irq(&phba->hbalock); /* * Firmware stops when it triggred erratt. That could cause the I/Os * dropped by the firmware. Error iocb (I/O) on txcmplq and let the * SCSI layer retry it after re-establishing link. */ pring = &psli->ring[psli->fcp_ring]; lpfc_sli_abort_iocb_ring(phba, pring); /* * There was a firmware error. Take the hba offline and then * attempt to restart it. */ lpfc_offline_prep(phba, LPFC_MBX_WAIT); lpfc_offline(phba); /* Wait for the ER1 bit to clear.*/ while (phba->work_hs & HS_FFER1) { msleep(100); if (lpfc_readl(phba->HSregaddr, &phba->work_hs)) { phba->work_hs = UNPLUG_ERR ; break; } /* If driver is unloading let the worker thread continue */ if (phba->pport->load_flag & FC_UNLOADING) { phba->work_hs = 0; break; } } /* * This is to ptrotect against a race condition in which * first write to the host attention register clear the * host status register. */ if ((!phba->work_hs) && (!(phba->pport->load_flag & FC_UNLOADING))) phba->work_hs = old_host_status & ~HS_FFER1; spin_lock_irq(&phba->hbalock); phba->hba_flag &= ~DEFER_ERATT; spin_unlock_irq(&phba->hbalock); phba->work_status[0] = readl(phba->MBslimaddr + 0xa8); phba->work_status[1] = readl(phba->MBslimaddr + 0xac); } static void lpfc_board_errevt_to_mgmt(struct lpfc_hba *phba) { struct lpfc_board_event_header board_event; struct Scsi_Host *shost; board_event.event_type = FC_REG_BOARD_EVENT; board_event.subcategory = LPFC_EVENT_PORTINTERR; shost = lpfc_shost_from_vport(phba->pport); fc_host_post_vendor_event(shost, fc_get_event_number(), sizeof(board_event), (char *) &board_event, LPFC_NL_VENDOR_ID); } /** * lpfc_handle_eratt_s3 - The SLI3 HBA hardware error handler * @phba: pointer to lpfc hba data structure. * * This routine is invoked to handle the following HBA hardware error * conditions: * 1 - HBA error attention interrupt * 2 - DMA ring index out of range * 3 - Mailbox command came back as unknown **/ static void lpfc_handle_eratt_s3(struct lpfc_hba *phba) { struct lpfc_vport *vport = phba->pport; struct lpfc_sli *psli = &phba->sli; struct lpfc_sli_ring *pring; uint32_t event_data; unsigned long temperature; struct temp_event temp_event_data; struct Scsi_Host *shost; /* If the pci channel is offline, ignore possible errors, * since we cannot communicate with the pci card anyway. */ if (pci_channel_offline(phba->pcidev)) { spin_lock_irq(&phba->hbalock); phba->hba_flag &= ~DEFER_ERATT; spin_unlock_irq(&phba->hbalock); return; } /* If resets are disabled then leave the HBA alone and return */ if (!phba->cfg_enable_hba_reset) return; /* Send an internal error event to mgmt application */ lpfc_board_errevt_to_mgmt(phba); if (phba->hba_flag & DEFER_ERATT) lpfc_handle_deferred_eratt(phba); if ((phba->work_hs & HS_FFER6) || (phba->work_hs & HS_FFER8)) { if (phba->work_hs & HS_FFER6) /* Re-establishing Link */ lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT, "1301 Re-establishing Link " "Data: x%x x%x x%x\n", phba->work_hs, phba->work_status[0], phba->work_status[1]); if (phba->work_hs & HS_FFER8) /* Device Zeroization */ lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT, "2861 Host Authentication device " "zeroization Data:x%x x%x x%x\n", phba->work_hs, phba->work_status[0], phba->work_status[1]); spin_lock_irq(&phba->hbalock); psli->sli_flag &= ~LPFC_SLI_ACTIVE; spin_unlock_irq(&phba->hbalock); /* * Firmware stops when it triggled erratt with HS_FFER6. * That could cause the I/Os dropped by the firmware. * Error iocb (I/O) on txcmplq and let the SCSI layer * retry it after re-establishing link. */ pring = &psli->ring[psli->fcp_ring]; lpfc_sli_abort_iocb_ring(phba, pring); /* * There was a firmware error. Take the hba offline and then * attempt to restart it. */ lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT); lpfc_offline(phba); lpfc_sli_brdrestart(phba); if (lpfc_online(phba) == 0) { /* Initialize the HBA */ lpfc_unblock_mgmt_io(phba); return; } lpfc_unblock_mgmt_io(phba); } else if (phba->work_hs & HS_CRIT_TEMP) { temperature = readl(phba->MBslimaddr + TEMPERATURE_OFFSET); temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT; temp_event_data.event_code = LPFC_CRIT_TEMP; temp_event_data.data = (uint32_t)temperature; lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0406 Adapter maximum temperature exceeded " "(%ld), taking this port offline " "Data: x%x x%x x%x\n", temperature, phba->work_hs, phba->work_status[0], phba->work_status[1]); shost = lpfc_shost_from_vport(phba->pport); fc_host_post_vendor_event(shost, fc_get_event_number(), sizeof(temp_event_data), (char *) &temp_event_data, SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX); spin_lock_irq(&phba->hbalock); phba->over_temp_state = HBA_OVER_TEMP; spin_unlock_irq(&phba->hbalock); lpfc_offline_eratt(phba); } else { /* The if clause above forces this code path when the status * failure is a value other than FFER6. Do not call the offline * twice. This is the adapter hardware error path. */ lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0457 Adapter Hardware Error " "Data: x%x x%x x%x\n", phba->work_hs, phba->work_status[0], phba->work_status[1]); event_data = FC_REG_DUMP_EVENT; shost = lpfc_shost_from_vport(vport); fc_host_post_vendor_event(shost, fc_get_event_number(), sizeof(event_data), (char *) &event_data, SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX); lpfc_offline_eratt(phba); } return; } /** * lpfc_sli4_port_sta_fn_reset - The SLI4 function reset due to port status reg * @phba: pointer to lpfc hba data structure. * @mbx_action: flag for mailbox shutdown action. * * This routine is invoked to perform an SLI4 port PCI function reset in * response to port status register polling attention. It waits for port * status register (ERR, RDY, RN) bits before proceeding with function reset. * During this process, interrupt vectors are freed and later requested * for handling possible port resource change. **/ static int lpfc_sli4_port_sta_fn_reset(struct lpfc_hba *phba, int mbx_action) { int rc; uint32_t intr_mode; /* * On error status condition, driver need to wait for port * ready before performing reset. */ rc = lpfc_sli4_pdev_status_reg_wait(phba); if (!rc) { /* need reset: attempt for port recovery */ lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2887 Reset Needed: Attempting Port " "Recovery...\n"); lpfc_offline_prep(phba, mbx_action); lpfc_offline(phba); /* release interrupt for possible resource change */ lpfc_sli4_disable_intr(phba); lpfc_sli_brdrestart(phba); /* request and enable interrupt */ intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode); if (intr_mode == LPFC_INTR_ERROR) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "3175 Failed to enable interrupt\n"); return -EIO; } else { phba->intr_mode = intr_mode; } rc = lpfc_online(phba); if (rc == 0) lpfc_unblock_mgmt_io(phba); } return rc; } /** * lpfc_handle_eratt_s4 - The SLI4 HBA hardware error handler * @phba: pointer to lpfc hba data structure. * * This routine is invoked to handle the SLI4 HBA hardware error attention * conditions. **/ static void lpfc_handle_eratt_s4(struct lpfc_hba *phba) { struct lpfc_vport *vport = phba->pport; uint32_t event_data; struct Scsi_Host *shost; uint32_t if_type; struct lpfc_register portstat_reg = {0}; uint32_t reg_err1, reg_err2; uint32_t uerrlo_reg, uemasklo_reg; uint32_t pci_rd_rc1, pci_rd_rc2; int rc; /* If the pci channel is offline, ignore possible errors, since * we cannot communicate with the pci card anyway. */ if (pci_channel_offline(phba->pcidev)) return; /* If resets are disabled then leave the HBA alone and return */ if (!phba->cfg_enable_hba_reset) return; if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf); switch (if_type) { case LPFC_SLI_INTF_IF_TYPE_0: pci_rd_rc1 = lpfc_readl( phba->sli4_hba.u.if_type0.UERRLOregaddr, &uerrlo_reg); pci_rd_rc2 = lpfc_readl( phba->sli4_hba.u.if_type0.UEMASKLOregaddr, &uemasklo_reg); /* consider PCI bus read error as pci_channel_offline */ if (pci_rd_rc1 == -EIO && pci_rd_rc2 == -EIO) return; lpfc_sli4_offline_eratt(phba); break; case LPFC_SLI_INTF_IF_TYPE_2: pci_rd_rc1 = lpfc_readl( phba->sli4_hba.u.if_type2.STATUSregaddr, &portstat_reg.word0); /* consider PCI bus read error as pci_channel_offline */ if (pci_rd_rc1 == -EIO) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "3151 PCI bus read access failure: x%x\n", readl(phba->sli4_hba.u.if_type2.STATUSregaddr)); return; } reg_err1 = readl(phba->sli4_hba.u.if_type2.ERR1regaddr); reg_err2 = readl(phba->sli4_hba.u.if_type2.ERR2regaddr); if (bf_get(lpfc_sliport_status_oti, &portstat_reg)) { /* TODO: Register for Overtemp async events. */ lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2889 Port Overtemperature event, " "taking port offline\n"); spin_lock_irq(&phba->hbalock); phba->over_temp_state = HBA_OVER_TEMP; spin_unlock_irq(&phba->hbalock); lpfc_sli4_offline_eratt(phba); break; } if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 && reg_err2 == SLIPORT_ERR2_REG_FW_RESTART) lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "3143 Port Down: Firmware Restarted\n"); else if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 && reg_err2 == SLIPORT_ERR2_REG_FORCED_DUMP) lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "3144 Port Down: Debug Dump\n"); else if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 && reg_err2 == SLIPORT_ERR2_REG_FUNC_PROVISON) lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "3145 Port Down: Provisioning\n"); /* Check port status register for function reset */ rc = lpfc_sli4_port_sta_fn_reset(phba, LPFC_MBX_NO_WAIT); if (rc == 0) { /* don't report event on forced debug dump */ if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 && reg_err2 == SLIPORT_ERR2_REG_FORCED_DUMP) return; else break; } /* fall through for not able to recover */ lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "3152 Unrecoverable error, bring the port " "offline\n"); lpfc_sli4_offline_eratt(phba); break; case LPFC_SLI_INTF_IF_TYPE_1: default: break; } lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, "3123 Report dump event to upper layer\n"); /* Send an internal error event to mgmt application */ lpfc_board_errevt_to_mgmt(phba); event_data = FC_REG_DUMP_EVENT; shost = lpfc_shost_from_vport(vport); fc_host_post_vendor_event(shost, fc_get_event_number(), sizeof(event_data), (char *) &event_data, SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX); } /** * lpfc_handle_eratt - Wrapper func for handling hba error attention * @phba: pointer to lpfc HBA data structure. * * This routine wraps the actual SLI3 or SLI4 hba error attention handling * routine from the API jump table function pointer from the lpfc_hba struct. * * Return codes * 0 - success. * Any other value - error. **/ void lpfc_handle_eratt(struct lpfc_hba *phba) { (*phba->lpfc_handle_eratt)(phba); } /** * lpfc_handle_latt - The HBA link event handler * @phba: pointer to lpfc hba data structure. * * This routine is invoked from the worker thread to handle a HBA host * attention link event. **/ void lpfc_handle_latt(struct lpfc_hba *phba) { struct lpfc_vport *vport = phba->pport; struct lpfc_sli *psli = &phba->sli; LPFC_MBOXQ_t *pmb; volatile uint32_t control; struct lpfc_dmabuf *mp; int rc = 0; pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!pmb) { rc = 1; goto lpfc_handle_latt_err_exit; } mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); if (!mp) { rc = 2; goto lpfc_handle_latt_free_pmb; } mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys); if (!mp->virt) { rc = 3; goto lpfc_handle_latt_free_mp; } /* Cleanup any outstanding ELS commands */ lpfc_els_flush_all_cmd(phba); psli->slistat.link_event++; lpfc_read_topology(phba, pmb, mp); pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology; pmb->vport = vport; /* Block ELS IOCBs until we have processed this mbox command */ phba->sli.ring[LPFC_ELS_RING].flag |= LPFC_STOP_IOCB_EVENT; rc = lpfc_sli_issue_mbox (phba, pmb, MBX_NOWAIT); if (rc == MBX_NOT_FINISHED) { rc = 4; goto lpfc_handle_latt_free_mbuf; } /* Clear Link Attention in HA REG */ spin_lock_irq(&phba->hbalock); writel(HA_LATT, phba->HAregaddr); readl(phba->HAregaddr); /* flush */ spin_unlock_irq(&phba->hbalock); return; lpfc_handle_latt_free_mbuf: phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT; lpfc_mbuf_free(phba, mp->virt, mp->phys); lpfc_handle_latt_free_mp: kfree(mp); lpfc_handle_latt_free_pmb: mempool_free(pmb, phba->mbox_mem_pool); lpfc_handle_latt_err_exit: /* Enable Link attention interrupts */ spin_lock_irq(&phba->hbalock); psli->sli_flag |= LPFC_PROCESS_LA; control = readl(phba->HCregaddr); control |= HC_LAINT_ENA; writel(control, phba->HCregaddr); readl(phba->HCregaddr); /* flush */ /* Clear Link Attention in HA REG */ writel(HA_LATT, phba->HAregaddr); readl(phba->HAregaddr); /* flush */ spin_unlock_irq(&phba->hbalock); lpfc_linkdown(phba); phba->link_state = LPFC_HBA_ERROR; lpfc_printf_log(phba, KERN_ERR, LOG_MBOX, "0300 LATT: Cannot issue READ_LA: Data:%d\n", rc); return; } /** * lpfc_parse_vpd - Parse VPD (Vital Product Data) * @phba: pointer to lpfc hba data structure. * @vpd: pointer to the vital product data. * @len: length of the vital product data in bytes. * * This routine parses the Vital Product Data (VPD). The VPD is treated as * an array of characters. In this routine, the ModelName, ProgramType, and * ModelDesc, etc. fields of the phba data structure will be populated. * * Return codes * 0 - pointer to the VPD passed in is NULL * 1 - success **/ int lpfc_parse_vpd(struct lpfc_hba *phba, uint8_t *vpd, int len) { uint8_t lenlo, lenhi; int Length; int i, j; int finished = 0; int index = 0; if (!vpd) return 0; /* Vital Product */ lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "0455 Vital Product Data: x%x x%x x%x x%x\n", (uint32_t) vpd[0], (uint32_t) vpd[1], (uint32_t) vpd[2], (uint32_t) vpd[3]); while (!finished && (index < (len - 4))) { switch (vpd[index]) { case 0x82: case 0x91: index += 1; lenlo = vpd[index]; index += 1; lenhi = vpd[index]; index += 1; i = ((((unsigned short)lenhi) << 8) + lenlo); index += i; break; case 0x90: index += 1; lenlo = vpd[index]; index += 1; lenhi = vpd[index]; index += 1; Length = ((((unsigned short)lenhi) << 8) + lenlo); if (Length > len - index) Length = len - index; while (Length > 0) { /* Look for Serial Number */ if ((vpd[index] == 'S') && (vpd[index+1] == 'N')) { index += 2; i = vpd[index]; index += 1; j = 0; Length -= (3+i); while(i--) { phba->SerialNumber[j++] = vpd[index++]; if (j == 31) break; } phba->SerialNumber[j] = 0; continue; } else if ((vpd[index] == 'V') && (vpd[index+1] == '1')) { phba->vpd_flag |= VPD_MODEL_DESC; index += 2; i = vpd[index]; index += 1; j = 0; Length -= (3+i); while(i--) { phba->ModelDesc[j++] = vpd[index++]; if (j == 255) break; } phba->ModelDesc[j] = 0; continue; } else if ((vpd[index] == 'V') && (vpd[index+1] == '2')) { phba->vpd_flag |= VPD_MODEL_NAME; index += 2; i = vpd[index]; index += 1; j = 0; Length -= (3+i); while(i--) { phba->ModelName[j++] = vpd[index++]; if (j == 79) break; } phba->ModelName[j] = 0; continue; } else if ((vpd[index] == 'V') && (vpd[index+1] == '3')) { phba->vpd_flag |= VPD_PROGRAM_TYPE; index += 2; i = vpd[index]; index += 1; j = 0; Length -= (3+i); while(i--) { phba->ProgramType[j++] = vpd[index++]; if (j == 255) break; } phba->ProgramType[j] = 0; continue; } else if ((vpd[index] == 'V') && (vpd[index+1] == '4')) { phba->vpd_flag |= VPD_PORT; index += 2; i = vpd[index]; index += 1; j = 0; Length -= (3+i); while(i--) { if ((phba->sli_rev == LPFC_SLI_REV4) && (phba->sli4_hba.pport_name_sta == LPFC_SLI4_PPNAME_GET)) { j++; index++; } else phba->Port[j++] = vpd[index++]; if (j == 19) break; } if ((phba->sli_rev != LPFC_SLI_REV4) || (phba->sli4_hba.pport_name_sta == LPFC_SLI4_PPNAME_NON)) phba->Port[j] = 0; continue; } else { index += 2; i = vpd[index]; index += 1; index += i; Length -= (3 + i); } } finished = 0; break; case 0x78: finished = 1; break; default: index ++; break; } } return(1); } /** * lpfc_get_hba_model_desc - Retrieve HBA device model name and description * @phba: pointer to lpfc hba data structure. * @mdp: pointer to the data structure to hold the derived model name. * @descp: pointer to the data structure to hold the derived description. * * This routine retrieves HBA's description based on its registered PCI device * ID. The @descp passed into this function points to an array of 256 chars. It * shall be returned with the model name, maximum speed, and the host bus type. * The @mdp passed into this function points to an array of 80 chars. When the * function returns, the @mdp will be filled with the model name. **/ static void lpfc_get_hba_model_desc(struct lpfc_hba *phba, uint8_t *mdp, uint8_t *descp) { lpfc_vpd_t *vp; uint16_t dev_id = phba->pcidev->device; int max_speed; int GE = 0; int oneConnect = 0; /* default is not a oneConnect */ struct { char *name; char *bus; char *function; } m = {"", "", ""}; if (mdp && mdp[0] != '\0' && descp && descp[0] != '\0') return; if (phba->lmt & LMT_16Gb) max_speed = 16; else if (phba->lmt & LMT_10Gb) max_speed = 10; else if (phba->lmt & LMT_8Gb) max_speed = 8; else if (phba->lmt & LMT_4Gb) max_speed = 4; else if (phba->lmt & LMT_2Gb) max_speed = 2; else if (phba->lmt & LMT_1Gb) max_speed = 1; else max_speed = 0; vp = &phba->vpd; switch (dev_id) { case PCI_DEVICE_ID_FIREFLY: m = (typeof(m)){"LP6000", "PCI", "Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_SUPERFLY: if (vp->rev.biuRev >= 1 && vp->rev.biuRev <= 3) m = (typeof(m)){"LP7000", "PCI", "Fibre Channel Adapter"}; else m = (typeof(m)){"LP7000E", "PCI", "Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_DRAGONFLY: m = (typeof(m)){"LP8000", "PCI", "Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_CENTAUR: if (FC_JEDEC_ID(vp->rev.biuRev) == CENTAUR_2G_JEDEC_ID) m = (typeof(m)){"LP9002", "PCI", "Fibre Channel Adapter"}; else m = (typeof(m)){"LP9000", "PCI", "Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_RFLY: m = (typeof(m)){"LP952", "PCI", "Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_PEGASUS: m = (typeof(m)){"LP9802", "PCI-X", "Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_THOR: m = (typeof(m)){"LP10000", "PCI-X", "Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_VIPER: m = (typeof(m)){"LPX1000", "PCI-X", "Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_PFLY: m = (typeof(m)){"LP982", "PCI-X", "Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_TFLY: m = (typeof(m)){"LP1050", "PCI-X", "Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_HELIOS: m = (typeof(m)){"LP11000", "PCI-X2", "Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_HELIOS_SCSP: m = (typeof(m)){"LP11000-SP", "PCI-X2", "Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_HELIOS_DCSP: m = (typeof(m)){"LP11002-SP", "PCI-X2", "Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_NEPTUNE: m = (typeof(m)){"LPe1000", "PCIe", "Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_NEPTUNE_SCSP: m = (typeof(m)){"LPe1000-SP", "PCIe", "Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_NEPTUNE_DCSP: m = (typeof(m)){"LPe1002-SP", "PCIe", "Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_BMID: m = (typeof(m)){"LP1150", "PCI-X2", "Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_BSMB: m = (typeof(m)){"LP111", "PCI-X2", "Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_ZEPHYR: m = (typeof(m)){"LPe11000", "PCIe", "Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_ZEPHYR_SCSP: m = (typeof(m)){"LPe11000", "PCIe", "Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_ZEPHYR_DCSP: m = (typeof(m)){"LP2105", "PCIe", "FCoE Adapter"}; GE = 1; break; case PCI_DEVICE_ID_ZMID: m = (typeof(m)){"LPe1150", "PCIe", "Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_ZSMB: m = (typeof(m)){"LPe111", "PCIe", "Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_LP101: m = (typeof(m)){"LP101", "PCI-X", "Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_LP10000S: m = (typeof(m)){"LP10000-S", "PCI", "Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_LP11000S: m = (typeof(m)){"LP11000-S", "PCI-X2", "Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_LPE11000S: m = (typeof(m)){"LPe11000-S", "PCIe", "Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_SAT: m = (typeof(m)){"LPe12000", "PCIe", "Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_SAT_MID: m = (typeof(m)){"LPe1250", "PCIe", "Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_SAT_SMB: m = (typeof(m)){"LPe121", "PCIe", "Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_SAT_DCSP: m = (typeof(m)){"LPe12002-SP", "PCIe", "Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_SAT_SCSP: m = (typeof(m)){"LPe12000-SP", "PCIe", "Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_SAT_S: m = (typeof(m)){"LPe12000-S", "PCIe", "Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_HORNET: m = (typeof(m)){"LP21000", "PCIe", "FCoE Adapter"}; GE = 1; break; case PCI_DEVICE_ID_PROTEUS_VF: m = (typeof(m)){"LPev12000", "PCIe IOV", "Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_PROTEUS_PF: m = (typeof(m)){"LPev12000", "PCIe IOV", "Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_PROTEUS_S: m = (typeof(m)){"LPemv12002-S", "PCIe IOV", "Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_TIGERSHARK: oneConnect = 1; m = (typeof(m)){"OCe10100", "PCIe", "FCoE"}; break; case PCI_DEVICE_ID_TOMCAT: oneConnect = 1; m = (typeof(m)){"OCe11100", "PCIe", "FCoE"}; break; case PCI_DEVICE_ID_FALCON: m = (typeof(m)){"LPSe12002-ML1-E", "PCIe", "EmulexSecure Fibre"}; break; case PCI_DEVICE_ID_BALIUS: m = (typeof(m)){"LPVe12002", "PCIe Shared I/O", "Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_LANCER_FC: case PCI_DEVICE_ID_LANCER_FC_VF: m = (typeof(m)){"LPe16000", "PCIe", "Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_LANCER_FCOE: case PCI_DEVICE_ID_LANCER_FCOE_VF: oneConnect = 1; m = (typeof(m)){"OCe15100", "PCIe", "FCoE"}; break; case PCI_DEVICE_ID_SKYHAWK: case PCI_DEVICE_ID_SKYHAWK_VF: oneConnect = 1; m = (typeof(m)){"OCe14000", "PCIe", "FCoE"}; break; default: m = (typeof(m)){"Unknown", "", ""}; break; } if (mdp && mdp[0] == '\0') snprintf(mdp, 79,"%s", m.name); /* * oneConnect hba requires special processing, they are all initiators * and we put the port number on the end */ if (descp && descp[0] == '\0') { if (oneConnect) snprintf(descp, 255, "Emulex OneConnect %s, %s Initiator %s", m.name, m.function, phba->Port); else if (max_speed == 0) snprintf(descp, 255, "Emulex %s %s %s ", m.name, m.bus, m.function); else snprintf(descp, 255, "Emulex %s %d%s %s %s", m.name, max_speed, (GE) ? "GE" : "Gb", m.bus, m.function); } } /** * lpfc_post_buffer - Post IOCB(s) with DMA buffer descriptor(s) to a IOCB ring * @phba: pointer to lpfc hba data structure. * @pring: pointer to a IOCB ring. * @cnt: the number of IOCBs to be posted to the IOCB ring. * * This routine posts a given number of IOCBs with the associated DMA buffer * descriptors specified by the cnt argument to the given IOCB ring. * * Return codes * The number of IOCBs NOT able to be posted to the IOCB ring. **/ int lpfc_post_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, int cnt) { IOCB_t *icmd; struct lpfc_iocbq *iocb; struct lpfc_dmabuf *mp1, *mp2; cnt += pring->missbufcnt; /* While there are buffers to post */ while (cnt > 0) { /* Allocate buffer for command iocb */ iocb = lpfc_sli_get_iocbq(phba); if (iocb == NULL) { pring->missbufcnt = cnt; return cnt; } icmd = &iocb->iocb; /* 2 buffers can be posted per command */ /* Allocate buffer to post */ mp1 = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL); if (mp1) mp1->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &mp1->phys); if (!mp1 || !mp1->virt) { kfree(mp1); lpfc_sli_release_iocbq(phba, iocb); pring->missbufcnt = cnt; return cnt; } INIT_LIST_HEAD(&mp1->list); /* Allocate buffer to post */ if (cnt > 1) { mp2 = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL); if (mp2) mp2->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &mp2->phys); if (!mp2 || !mp2->virt) { kfree(mp2); lpfc_mbuf_free(phba, mp1->virt, mp1->phys); kfree(mp1); lpfc_sli_release_iocbq(phba, iocb); pring->missbufcnt = cnt; return cnt; } INIT_LIST_HEAD(&mp2->list); } else { mp2 = NULL; } icmd->un.cont64[0].addrHigh = putPaddrHigh(mp1->phys); icmd->un.cont64[0].addrLow = putPaddrLow(mp1->phys); icmd->un.cont64[0].tus.f.bdeSize = FCELSSIZE; icmd->ulpBdeCount = 1; cnt--; if (mp2) { icmd->un.cont64[1].addrHigh = putPaddrHigh(mp2->phys); icmd->un.cont64[1].addrLow = putPaddrLow(mp2->phys); icmd->un.cont64[1].tus.f.bdeSize = FCELSSIZE; cnt--; icmd->ulpBdeCount = 2; } icmd->ulpCommand = CMD_QUE_RING_BUF64_CN; icmd->ulpLe = 1; if (lpfc_sli_issue_iocb(phba, pring->ringno, iocb, 0) == IOCB_ERROR) { lpfc_mbuf_free(phba, mp1->virt, mp1->phys); kfree(mp1); cnt++; if (mp2) { lpfc_mbuf_free(phba, mp2->virt, mp2->phys); kfree(mp2); cnt++; } lpfc_sli_release_iocbq(phba, iocb); pring->missbufcnt = cnt; return cnt; } lpfc_sli_ringpostbuf_put(phba, pring, mp1); if (mp2) lpfc_sli_ringpostbuf_put(phba, pring, mp2); } pring->missbufcnt = 0; return 0; } /** * lpfc_post_rcv_buf - Post the initial receive IOCB buffers to ELS ring * @phba: pointer to lpfc hba data structure. * * This routine posts initial receive IOCB buffers to the ELS ring. The * current number of initial IOCB buffers specified by LPFC_BUF_RING0 is * set to 64 IOCBs. * * Return codes * 0 - success (currently always success) **/ static int lpfc_post_rcv_buf(struct lpfc_hba *phba) { struct lpfc_sli *psli = &phba->sli; /* Ring 0, ELS / CT buffers */ lpfc_post_buffer(phba, &psli->ring[LPFC_ELS_RING], LPFC_BUF_RING0); /* Ring 2 - FCP no buffers needed */ return 0; } #define S(N,V) (((V)<<(N))|((V)>>(32-(N)))) /** * lpfc_sha_init - Set up initial array of hash table entries * @HashResultPointer: pointer to an array as hash table. * * This routine sets up the initial values to the array of hash table entries * for the LC HBAs. **/ static void lpfc_sha_init(uint32_t * HashResultPointer) { HashResultPointer[0] = 0x67452301; HashResultPointer[1] = 0xEFCDAB89; HashResultPointer[2] = 0x98BADCFE; HashResultPointer[3] = 0x10325476; HashResultPointer[4] = 0xC3D2E1F0; } /** * lpfc_sha_iterate - Iterate initial hash table with the working hash table * @HashResultPointer: pointer to an initial/result hash table. * @HashWorkingPointer: pointer to an working hash table. * * This routine iterates an initial hash table pointed by @HashResultPointer * with the values from the working hash table pointeed by @HashWorkingPointer. * The results are putting back to the initial hash table, returned through * the @HashResultPointer as the result hash table. **/ static void lpfc_sha_iterate(uint32_t * HashResultPointer, uint32_t * HashWorkingPointer) { int t; uint32_t TEMP; uint32_t A, B, C, D, E; t = 16; do { HashWorkingPointer[t] = S(1, HashWorkingPointer[t - 3] ^ HashWorkingPointer[t - 8] ^ HashWorkingPointer[t - 14] ^ HashWorkingPointer[t - 16]); } while (++t <= 79); t = 0; A = HashResultPointer[0]; B = HashResultPointer[1]; C = HashResultPointer[2]; D = HashResultPointer[3]; E = HashResultPointer[4]; do { if (t < 20) { TEMP = ((B & C) | ((~B) & D)) + 0x5A827999; } else if (t < 40) { TEMP = (B ^ C ^ D) + 0x6ED9EBA1; } else if (t < 60) { TEMP = ((B & C) | (B & D) | (C & D)) + 0x8F1BBCDC; } else { TEMP = (B ^ C ^ D) + 0xCA62C1D6; } TEMP += S(5, A) + E + HashWorkingPointer[t]; E = D; D = C; C = S(30, B); B = A; A = TEMP; } while (++t <= 79); HashResultPointer[0] += A; HashResultPointer[1] += B; HashResultPointer[2] += C; HashResultPointer[3] += D; HashResultPointer[4] += E; } /** * lpfc_challenge_key - Create challenge key based on WWPN of the HBA * @RandomChallenge: pointer to the entry of host challenge random number array. * @HashWorking: pointer to the entry of the working hash array. * * This routine calculates the working hash array referred by @HashWorking * from the challenge random numbers associated with the host, referred by * @RandomChallenge. The result is put into the entry of the working hash * array and returned by reference through @HashWorking. **/ static void lpfc_challenge_key(uint32_t * RandomChallenge, uint32_t * HashWorking) { *HashWorking = (*RandomChallenge ^ *HashWorking); } /** * lpfc_hba_init - Perform special handling for LC HBA initialization * @phba: pointer to lpfc hba data structure. * @hbainit: pointer to an array of unsigned 32-bit integers. * * This routine performs the special handling for LC HBA initialization. **/ void lpfc_hba_init(struct lpfc_hba *phba, uint32_t *hbainit) { int t; uint32_t *HashWorking; uint32_t *pwwnn = (uint32_t *) phba->wwnn; HashWorking = kcalloc(80, sizeof(uint32_t), GFP_KERNEL); if (!HashWorking) return; HashWorking[0] = HashWorking[78] = *pwwnn++; HashWorking[1] = HashWorking[79] = *pwwnn; for (t = 0; t < 7; t++) lpfc_challenge_key(phba->RandomData + t, HashWorking + t); lpfc_sha_init(hbainit); lpfc_sha_iterate(hbainit, HashWorking); kfree(HashWorking); } /** * lpfc_cleanup - Performs vport cleanups before deleting a vport * @vport: pointer to a virtual N_Port data structure. * * This routine performs the necessary cleanups before deleting the @vport. * It invokes the discovery state machine to perform necessary state * transitions and to release the ndlps associated with the @vport. Note, * the physical port is treated as @vport 0. **/ void lpfc_cleanup(struct lpfc_vport *vport) { struct lpfc_hba *phba = vport->phba; struct lpfc_nodelist *ndlp, *next_ndlp; int i = 0; if (phba->link_state > LPFC_LINK_DOWN) lpfc_port_link_failure(vport); list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { if (!NLP_CHK_NODE_ACT(ndlp)) { ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE); if (!ndlp) continue; spin_lock_irq(&phba->ndlp_lock); NLP_SET_FREE_REQ(ndlp); spin_unlock_irq(&phba->ndlp_lock); /* Trigger the release of the ndlp memory */ lpfc_nlp_put(ndlp); continue; } spin_lock_irq(&phba->ndlp_lock); if (NLP_CHK_FREE_REQ(ndlp)) { /* The ndlp should not be in memory free mode already */ spin_unlock_irq(&phba->ndlp_lock); continue; } else /* Indicate request for freeing ndlp memory */ NLP_SET_FREE_REQ(ndlp); spin_unlock_irq(&phba->ndlp_lock); if (vport->port_type != LPFC_PHYSICAL_PORT && ndlp->nlp_DID == Fabric_DID) { /* Just free up ndlp with Fabric_DID for vports */ lpfc_nlp_put(ndlp); continue; } /* take care of nodes in unused state before the state * machine taking action. */ if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) { lpfc_nlp_put(ndlp); continue; } if (ndlp->nlp_type & NLP_FABRIC) lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RECOVERY); lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); } /* At this point, ALL ndlp's should be gone * because of the previous NLP_EVT_DEVICE_RM. * Lets wait for this to happen, if needed. */ while (!list_empty(&vport->fc_nodes)) { if (i++ > 3000) { lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, "0233 Nodelist not empty\n"); list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { lpfc_printf_vlog(ndlp->vport, KERN_ERR, LOG_NODE, "0282 did:x%x ndlp:x%p " "usgmap:x%x refcnt:%d\n", ndlp->nlp_DID, (void *)ndlp, ndlp->nlp_usg_map, atomic_read( &ndlp->kref.refcount)); } break; } /* Wait for any activity on ndlps to settle */ msleep(10); } lpfc_cleanup_vports_rrqs(vport, NULL); } /** * lpfc_stop_vport_timers - Stop all the timers associated with a vport * @vport: pointer to a virtual N_Port data structure. * * This routine stops all the timers associated with a @vport. This function * is invoked before disabling or deleting a @vport. Note that the physical * port is treated as @vport 0. **/ void lpfc_stop_vport_timers(struct lpfc_vport *vport) { del_timer_sync(&vport->els_tmofunc); del_timer_sync(&vport->fc_fdmitmo); del_timer_sync(&vport->delayed_disc_tmo); lpfc_can_disctmo(vport); return; } /** * __lpfc_sli4_stop_fcf_redisc_wait_timer - Stop FCF rediscovery wait timer * @phba: pointer to lpfc hba data structure. * * This routine stops the SLI4 FCF rediscover wait timer if it's on. The * caller of this routine should already hold the host lock. **/ void __lpfc_sli4_stop_fcf_redisc_wait_timer(struct lpfc_hba *phba) { /* Clear pending FCF rediscovery wait flag */ phba->fcf.fcf_flag &= ~FCF_REDISC_PEND; /* Now, try to stop the timer */ del_timer(&phba->fcf.redisc_wait); } /** * lpfc_sli4_stop_fcf_redisc_wait_timer - Stop FCF rediscovery wait timer * @phba: pointer to lpfc hba data structure. * * This routine stops the SLI4 FCF rediscover wait timer if it's on. It * checks whether the FCF rediscovery wait timer is pending with the host * lock held before proceeding with disabling the timer and clearing the * wait timer pendig flag. **/ void lpfc_sli4_stop_fcf_redisc_wait_timer(struct lpfc_hba *phba) { spin_lock_irq(&phba->hbalock); if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND)) { /* FCF rediscovery timer already fired or stopped */ spin_unlock_irq(&phba->hbalock); return; } __lpfc_sli4_stop_fcf_redisc_wait_timer(phba); /* Clear failover in progress flags */ phba->fcf.fcf_flag &= ~(FCF_DEAD_DISC | FCF_ACVL_DISC); spin_unlock_irq(&phba->hbalock); } /** * lpfc_stop_hba_timers - Stop all the timers associated with an HBA * @phba: pointer to lpfc hba data structure. * * This routine stops all the timers associated with a HBA. This function is * invoked before either putting a HBA offline or unloading the driver. **/ void lpfc_stop_hba_timers(struct lpfc_hba *phba) { lpfc_stop_vport_timers(phba->pport); del_timer_sync(&phba->sli.mbox_tmo); del_timer_sync(&phba->fabric_block_timer); del_timer_sync(&phba->eratt_poll); del_timer_sync(&phba->hb_tmofunc); if (phba->sli_rev == LPFC_SLI_REV4) { del_timer_sync(&phba->rrq_tmr); phba->hba_flag &= ~HBA_RRQ_ACTIVE; } phba->hb_outstanding = 0; switch (phba->pci_dev_grp) { case LPFC_PCI_DEV_LP: /* Stop any LightPulse device specific driver timers */ del_timer_sync(&phba->fcp_poll_timer); break; case LPFC_PCI_DEV_OC: /* Stop any OneConnect device sepcific driver timers */ lpfc_sli4_stop_fcf_redisc_wait_timer(phba); break; default: lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0297 Invalid device group (x%x)\n", phba->pci_dev_grp); break; } return; } /** * lpfc_block_mgmt_io - Mark a HBA's management interface as blocked * @phba: pointer to lpfc hba data structure. * * This routine marks a HBA's management interface as blocked. Once the HBA's * management interface is marked as blocked, all the user space access to * the HBA, whether they are from sysfs interface or libdfc interface will * all be blocked. The HBA is set to block the management interface when the * driver prepares the HBA interface for online or offline. **/ static void lpfc_block_mgmt_io(struct lpfc_hba *phba, int mbx_action) { unsigned long iflag; uint8_t actcmd = MBX_HEARTBEAT; unsigned long timeout; spin_lock_irqsave(&phba->hbalock, iflag); phba->sli.sli_flag |= LPFC_BLOCK_MGMT_IO; spin_unlock_irqrestore(&phba->hbalock, iflag); if (mbx_action == LPFC_MBX_NO_WAIT) return; timeout = msecs_to_jiffies(LPFC_MBOX_TMO * 1000) + jiffies; spin_lock_irqsave(&phba->hbalock, iflag); if (phba->sli.mbox_active) { actcmd = phba->sli.mbox_active->u.mb.mbxCommand; /* Determine how long we might wait for the active mailbox * command to be gracefully completed by firmware. */ timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba, phba->sli.mbox_active) * 1000) + jiffies; } spin_unlock_irqrestore(&phba->hbalock, iflag); /* Wait for the outstnading mailbox command to complete */ while (phba->sli.mbox_active) { /* Check active mailbox complete status every 2ms */ msleep(2); if (time_after(jiffies, timeout)) { lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "2813 Mgmt IO is Blocked %x " "- mbox cmd %x still active\n", phba->sli.sli_flag, actcmd); break; } } } /** * lpfc_sli4_node_prep - Assign RPIs for active nodes. * @phba: pointer to lpfc hba data structure. * * Allocate RPIs for all active remote nodes. This is needed whenever * an SLI4 adapter is reset and the driver is not unloading. Its purpose * is to fixup the temporary rpi assignments. **/ void lpfc_sli4_node_prep(struct lpfc_hba *phba) { struct lpfc_nodelist *ndlp, *next_ndlp; struct lpfc_vport **vports; int i; if (phba->sli_rev != LPFC_SLI_REV4) return; vports = lpfc_create_vport_work_array(phba); if (vports != NULL) { for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { if (vports[i]->load_flag & FC_UNLOADING) continue; list_for_each_entry_safe(ndlp, next_ndlp, &vports[i]->fc_nodes, nlp_listp) { if (NLP_CHK_NODE_ACT(ndlp)) ndlp->nlp_rpi = lpfc_sli4_alloc_rpi(phba); } } } lpfc_destroy_vport_work_array(phba, vports); } /** * lpfc_online - Initialize and bring a HBA online * @phba: pointer to lpfc hba data structure. * * This routine initializes the HBA and brings a HBA online. During this * process, the management interface is blocked to prevent user space access * to the HBA interfering with the driver initialization. * * Return codes * 0 - successful * 1 - failed **/ int lpfc_online(struct lpfc_hba *phba) { struct lpfc_vport *vport; struct lpfc_vport **vports; int i; bool vpis_cleared = false; if (!phba) return 0; vport = phba->pport; if (!(vport->fc_flag & FC_OFFLINE_MODE)) return 0; lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, "0458 Bring Adapter online\n"); lpfc_block_mgmt_io(phba, LPFC_MBX_WAIT); if (!lpfc_sli_queue_setup(phba)) { lpfc_unblock_mgmt_io(phba); return 1; } if (phba->sli_rev == LPFC_SLI_REV4) { if (lpfc_sli4_hba_setup(phba)) { /* Initialize SLI4 HBA */ lpfc_unblock_mgmt_io(phba); return 1; } spin_lock_irq(&phba->hbalock); if (!phba->sli4_hba.max_cfg_param.vpi_used) vpis_cleared = true; spin_unlock_irq(&phba->hbalock); } else { if (lpfc_sli_hba_setup(phba)) { /* Initialize SLI2/SLI3 HBA */ lpfc_unblock_mgmt_io(phba); return 1; } } vports = lpfc_create_vport_work_array(phba); if (vports != NULL) { for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { struct Scsi_Host *shost; shost = lpfc_shost_from_vport(vports[i]); spin_lock_irq(shost->host_lock); vports[i]->fc_flag &= ~FC_OFFLINE_MODE; if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) vports[i]->fc_flag |= FC_VPORT_NEEDS_REG_VPI; if (phba->sli_rev == LPFC_SLI_REV4) { vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI; if ((vpis_cleared) && (vports[i]->port_type != LPFC_PHYSICAL_PORT)) vports[i]->vpi = 0; } spin_unlock_irq(shost->host_lock); } } lpfc_destroy_vport_work_array(phba, vports); lpfc_unblock_mgmt_io(phba); return 0; } /** * lpfc_unblock_mgmt_io - Mark a HBA's management interface to be not blocked * @phba: pointer to lpfc hba data structure. * * This routine marks a HBA's management interface as not blocked. Once the * HBA's management interface is marked as not blocked, all the user space * access to the HBA, whether they are from sysfs interface or libdfc * interface will be allowed. The HBA is set to block the management interface * when the driver prepares the HBA interface for online or offline and then * set to unblock the management interface afterwards. **/ void lpfc_unblock_mgmt_io(struct lpfc_hba * phba) { unsigned long iflag; spin_lock_irqsave(&phba->hbalock, iflag); phba->sli.sli_flag &= ~LPFC_BLOCK_MGMT_IO; spin_unlock_irqrestore(&phba->hbalock, iflag); } /** * lpfc_offline_prep - Prepare a HBA to be brought offline * @phba: pointer to lpfc hba data structure. * * This routine is invoked to prepare a HBA to be brought offline. It performs * unregistration login to all the nodes on all vports and flushes the mailbox * queue to make it ready to be brought offline. **/ void lpfc_offline_prep(struct lpfc_hba *phba, int mbx_action) { struct lpfc_vport *vport = phba->pport; struct lpfc_nodelist *ndlp, *next_ndlp; struct lpfc_vport **vports; struct Scsi_Host *shost; int i; if (vport->fc_flag & FC_OFFLINE_MODE) return; lpfc_block_mgmt_io(phba, mbx_action); lpfc_linkdown(phba); /* Issue an unreg_login to all nodes on all vports */ vports = lpfc_create_vport_work_array(phba); if (vports != NULL) { for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { if (vports[i]->load_flag & FC_UNLOADING) continue; shost = lpfc_shost_from_vport(vports[i]); spin_lock_irq(shost->host_lock); vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED; vports[i]->fc_flag |= FC_VPORT_NEEDS_REG_VPI; vports[i]->fc_flag &= ~FC_VFI_REGISTERED; spin_unlock_irq(shost->host_lock); shost = lpfc_shost_from_vport(vports[i]); list_for_each_entry_safe(ndlp, next_ndlp, &vports[i]->fc_nodes, nlp_listp) { if (!NLP_CHK_NODE_ACT(ndlp)) continue; if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) continue; if (ndlp->nlp_type & NLP_FABRIC) { lpfc_disc_state_machine(vports[i], ndlp, NULL, NLP_EVT_DEVICE_RECOVERY); lpfc_disc_state_machine(vports[i], ndlp, NULL, NLP_EVT_DEVICE_RM); } spin_lock_irq(shost->host_lock); ndlp->nlp_flag &= ~NLP_NPR_ADISC; spin_unlock_irq(shost->host_lock); /* * Whenever an SLI4 port goes offline, free the * RPI. Get a new RPI when the adapter port * comes back online. */ if (phba->sli_rev == LPFC_SLI_REV4) lpfc_sli4_free_rpi(phba, ndlp->nlp_rpi); lpfc_unreg_rpi(vports[i], ndlp); } } } lpfc_destroy_vport_work_array(phba, vports); lpfc_sli_mbox_sys_shutdown(phba, mbx_action); } /** * lpfc_offline - Bring a HBA offline * @phba: pointer to lpfc hba data structure. * * This routine actually brings a HBA offline. It stops all the timers * associated with the HBA, brings down the SLI layer, and eventually * marks the HBA as in offline state for the upper layer protocol. **/ void lpfc_offline(struct lpfc_hba *phba) { struct Scsi_Host *shost; struct lpfc_vport **vports; int i; if (phba->pport->fc_flag & FC_OFFLINE_MODE) return; /* stop port and all timers associated with this hba */ lpfc_stop_port(phba); vports = lpfc_create_vport_work_array(phba); if (vports != NULL) for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) lpfc_stop_vport_timers(vports[i]); lpfc_destroy_vport_work_array(phba, vports); lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, "0460 Bring Adapter offline\n"); /* Bring down the SLI Layer and cleanup. The HBA is offline now. */ lpfc_sli_hba_down(phba); spin_lock_irq(&phba->hbalock); phba->work_ha = 0; spin_unlock_irq(&phba->hbalock); vports = lpfc_create_vport_work_array(phba); if (vports != NULL) for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { shost = lpfc_shost_from_vport(vports[i]); spin_lock_irq(shost->host_lock); vports[i]->work_port_events = 0; vports[i]->fc_flag |= FC_OFFLINE_MODE; spin_unlock_irq(shost->host_lock); } lpfc_destroy_vport_work_array(phba, vports); } /** * lpfc_scsi_free - Free all the SCSI buffers and IOCBs from driver lists * @phba: pointer to lpfc hba data structure. * * This routine is to free all the SCSI buffers and IOCBs from the driver * list back to kernel. It is called from lpfc_pci_remove_one to free * the internal resources before the device is removed from the system. **/ static void lpfc_scsi_free(struct lpfc_hba *phba) { struct lpfc_scsi_buf *sb, *sb_next; struct lpfc_iocbq *io, *io_next; spin_lock_irq(&phba->hbalock); /* Release all the lpfc_scsi_bufs maintained by this host. */ spin_lock(&phba->scsi_buf_list_put_lock); list_for_each_entry_safe(sb, sb_next, &phba->lpfc_scsi_buf_list_put, list) { list_del(&sb->list); pci_pool_free(phba->lpfc_scsi_dma_buf_pool, sb->data, sb->dma_handle); kfree(sb); phba->total_scsi_bufs--; } spin_unlock(&phba->scsi_buf_list_put_lock); spin_lock(&phba->scsi_buf_list_get_lock); list_for_each_entry_safe(sb, sb_next, &phba->lpfc_scsi_buf_list_get, list) { list_del(&sb->list); pci_pool_free(phba->lpfc_scsi_dma_buf_pool, sb->data, sb->dma_handle); kfree(sb); 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); } /** * lpfc_sli4_xri_sgl_update - update xri-sgl sizing and mapping * @phba: pointer to lpfc hba data structure. * * This routine first calculates the sizes of the current els and allocated * scsi sgl lists, and then goes through all sgls to updates the physical * XRIs assigned due to port function reset. During port initialization, the * current els and allocated scsi sgl lists are 0s. * * Return codes * 0 - successful (for now, it always returns 0) **/ int lpfc_sli4_xri_sgl_update(struct lpfc_hba *phba) { struct lpfc_sglq *sglq_entry = NULL, *sglq_entry_next = NULL; struct lpfc_scsi_buf *psb = NULL, *psb_next = NULL; uint16_t i, lxri, xri_cnt, els_xri_cnt, scsi_xri_cnt; LIST_HEAD(els_sgl_list); LIST_HEAD(scsi_sgl_list); int rc; /* * update on pci function's els xri-sgl list */ els_xri_cnt = lpfc_sli4_get_els_iocb_cnt(phba); if (els_xri_cnt > phba->sli4_hba.els_xri_cnt) { /* els xri-sgl expanded */ xri_cnt = els_xri_cnt - phba->sli4_hba.els_xri_cnt; lpfc_printf_log(phba, KERN_INFO, LOG_SLI, "3157 ELS xri-sgl count increased from " "%d to %d\n", phba->sli4_hba.els_xri_cnt, els_xri_cnt); /* allocate the additional els sgls */ for (i = 0; i < xri_cnt; i++) { sglq_entry = kzalloc(sizeof(struct lpfc_sglq), GFP_KERNEL); if (sglq_entry == NULL) { lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "2562 Failure to allocate an " "ELS sgl entry:%d\n", i); rc = -ENOMEM; goto out_free_mem; } sglq_entry->buff_type = GEN_BUFF_TYPE; sglq_entry->virt = lpfc_mbuf_alloc(phba, 0, &sglq_entry->phys); if (sglq_entry->virt == NULL) { kfree(sglq_entry); lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "2563 Failure to allocate an " "ELS mbuf:%d\n", i); rc = -ENOMEM; goto out_free_mem; } sglq_entry->sgl = sglq_entry->virt; memset(sglq_entry->sgl, 0, LPFC_BPL_SIZE); sglq_entry->state = SGL_FREED; list_add_tail(&sglq_entry->list, &els_sgl_list); } spin_lock_irq(&phba->hbalock); list_splice_init(&els_sgl_list, &phba->sli4_hba.lpfc_sgl_list); spin_unlock_irq(&phba->hbalock); } else if (els_xri_cnt < phba->sli4_hba.els_xri_cnt) { /* els xri-sgl shrinked */ xri_cnt = phba->sli4_hba.els_xri_cnt - els_xri_cnt; lpfc_printf_log(phba, KERN_INFO, LOG_SLI, "3158 ELS xri-sgl count decreased from " "%d to %d\n", phba->sli4_hba.els_xri_cnt, els_xri_cnt); spin_lock_irq(&phba->hbalock); list_splice_init(&phba->sli4_hba.lpfc_sgl_list, &els_sgl_list); spin_unlock_irq(&phba->hbalock); /* release extra els sgls from list */ for (i = 0; i < xri_cnt; i++) { list_remove_head(&els_sgl_list, sglq_entry, struct lpfc_sglq, list); if (sglq_entry) { lpfc_mbuf_free(phba, sglq_entry->virt, sglq_entry->phys); kfree(sglq_entry); } } spin_lock_irq(&phba->hbalock); list_splice_init(&els_sgl_list, &phba->sli4_hba.lpfc_sgl_list); spin_unlock_irq(&phba->hbalock); } else lpfc_printf_log(phba, KERN_INFO, LOG_SLI, "3163 ELS xri-sgl count unchanged: %d\n", els_xri_cnt); phba->sli4_hba.els_xri_cnt = els_xri_cnt; /* update xris to els sgls on the list */ sglq_entry = NULL; sglq_entry_next = NULL; list_for_each_entry_safe(sglq_entry, sglq_entry_next, &phba->sli4_hba.lpfc_sgl_list, list) { lxri = lpfc_sli4_next_xritag(phba); if (lxri == NO_XRI) { lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "2400 Failed to allocate xri for " "ELS sgl\n"); rc = -ENOMEM; goto out_free_mem; } sglq_entry->sli4_lxritag = lxri; sglq_entry->sli4_xritag = phba->sli4_hba.xri_ids[lxri]; } /* * update on pci function's allocated scsi xri-sgl list */ phba->total_scsi_bufs = 0; /* maximum number of xris available for scsi buffers */ phba->sli4_hba.scsi_xri_max = phba->sli4_hba.max_cfg_param.max_xri - els_xri_cnt; lpfc_printf_log(phba, KERN_INFO, LOG_SLI, "2401 Current allocated SCSI xri-sgl count:%d, " "maximum SCSI xri count:%d\n", phba->sli4_hba.scsi_xri_cnt, phba->sli4_hba.scsi_xri_max); spin_lock_irq(&phba->scsi_buf_list_get_lock); spin_lock_irq(&phba->scsi_buf_list_put_lock); list_splice_init(&phba->lpfc_scsi_buf_list_get, &scsi_sgl_list); list_splice(&phba->lpfc_scsi_buf_list_put, &scsi_sgl_list); spin_unlock_irq(&phba->scsi_buf_list_put_lock); spin_unlock_irq(&phba->scsi_buf_list_get_lock); if (phba->sli4_hba.scsi_xri_cnt > phba->sli4_hba.scsi_xri_max) { /* max scsi xri shrinked below the allocated scsi buffers */ scsi_xri_cnt = phba->sli4_hba.scsi_xri_cnt - phba->sli4_hba.scsi_xri_max; /* release the extra allocated scsi buffers */ for (i = 0; i < scsi_xri_cnt; i++) { list_remove_head(&scsi_sgl_list, psb, struct lpfc_scsi_buf, list); pci_pool_free(phba->lpfc_scsi_dma_buf_pool, psb->data, psb->dma_handle); kfree(psb); } spin_lock_irq(&phba->scsi_buf_list_get_lock); phba->sli4_hba.scsi_xri_cnt -= scsi_xri_cnt; spin_unlock_irq(&phba->scsi_buf_list_get_lock); } /* update xris associated to remaining allocated scsi buffers */ psb = NULL; psb_next = NULL; list_for_each_entry_safe(psb, psb_next, &scsi_sgl_list, list) { lxri = lpfc_sli4_next_xritag(phba); if (lxri == NO_XRI) { lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "2560 Failed to allocate xri for " "scsi buffer\n"); rc = -ENOMEM; goto out_free_mem; } psb->cur_iocbq.sli4_lxritag = lxri; psb->cur_iocbq.sli4_xritag = phba->sli4_hba.xri_ids[lxri]; } spin_lock_irq(&phba->scsi_buf_list_get_lock); spin_lock_irq(&phba->scsi_buf_list_put_lock); list_splice_init(&scsi_sgl_list, &phba->lpfc_scsi_buf_list_get); INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list_put); spin_unlock_irq(&phba->scsi_buf_list_put_lock); spin_unlock_irq(&phba->scsi_buf_list_get_lock); return 0; out_free_mem: lpfc_free_els_sgl_list(phba); lpfc_scsi_free(phba); return rc; } /** * lpfc_create_port - Create an FC port * @phba: pointer to lpfc hba data structure. * @instance: a unique integer ID to this FC port. * @dev: pointer to the device data structure. * * This routine creates a FC port for the upper layer protocol. The FC port * can be created on top of either a physical port or a virtual port provided * by the HBA. This routine also allocates a SCSI host data structure (shost) * and associates the FC port created before adding the shost into the SCSI * layer. * * Return codes * @vport - pointer to the virtual N_Port data structure. * NULL - port create failed. **/ struct lpfc_vport * lpfc_create_port(struct lpfc_hba *phba, int instance, struct device *dev) { struct lpfc_vport *vport; struct Scsi_Host *shost; int error = 0; if (dev != &phba->pcidev->dev) shost = scsi_host_alloc(&lpfc_vport_template, sizeof(struct lpfc_vport)); else shost = scsi_host_alloc(&lpfc_template, sizeof(struct lpfc_vport)); if (!shost) goto out; vport = (struct lpfc_vport *) shost->hostdata; vport->phba = phba; vport->load_flag |= FC_LOADING; vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; vport->fc_rscn_flush = 0; lpfc_get_vport_cfgparam(vport); shost->unique_id = instance; shost->max_id = LPFC_MAX_TARGET; shost->max_lun = vport->cfg_max_luns; shost->this_id = -1; shost->max_cmd_len = 16; if (phba->sli_rev == LPFC_SLI_REV4) { shost->dma_boundary = phba->sli4_hba.pc_sli4_params.sge_supp_len-1; shost->sg_tablesize = phba->cfg_sg_seg_cnt; } /* * Set initial can_queue value since 0 is no longer supported and * scsi_add_host will fail. This will be adjusted later based on the * max xri value determined in hba setup. */ shost->can_queue = phba->cfg_hba_queue_depth - 10; if (dev != &phba->pcidev->dev) { shost->transportt = lpfc_vport_transport_template; vport->port_type = LPFC_NPIV_PORT; } else { shost->transportt = lpfc_transport_template; vport->port_type = LPFC_PHYSICAL_PORT; } /* Initialize all internally managed lists. */ INIT_LIST_HEAD(&vport->fc_nodes); INIT_LIST_HEAD(&vport->rcv_buffer_list); spin_lock_init(&vport->work_port_lock); init_timer(&vport->fc_disctmo); vport->fc_disctmo.function = lpfc_disc_timeout; vport->fc_disctmo.data = (unsigned long)vport; init_timer(&vport->fc_fdmitmo); vport->fc_fdmitmo.function = lpfc_fdmi_tmo; vport->fc_fdmitmo.data = (unsigned long)vport; init_timer(&vport->els_tmofunc); vport->els_tmofunc.function = lpfc_els_timeout; vport->els_tmofunc.data = (unsigned long)vport; init_timer(&vport->delayed_disc_tmo); vport->delayed_disc_tmo.function = lpfc_delayed_disc_tmo; vport->delayed_disc_tmo.data = (unsigned long)vport; error = scsi_add_host_with_dma(shost, dev, &phba->pcidev->dev); if (error) goto out_put_shost; spin_lock_irq(&phba->hbalock); list_add_tail(&vport->listentry, &phba->port_list); spin_unlock_irq(&phba->hbalock); return vport; out_put_shost: scsi_host_put(shost); out: return NULL; } /** * destroy_port - destroy an FC port * @vport: pointer to an lpfc virtual N_Port data structure. * * This routine destroys a FC port from the upper layer protocol. All the * resources associated with the port are released. **/ void destroy_port(struct lpfc_vport *vport) { struct Scsi_Host *shost = lpfc_shost_from_vport(vport); struct lpfc_hba *phba = vport->phba; lpfc_debugfs_terminate(vport); fc_remove_host(shost); scsi_remove_host(shost); spin_lock_irq(&phba->hbalock); list_del_init(&vport->listentry); spin_unlock_irq(&phba->hbalock); lpfc_cleanup(vport); return; } /** * lpfc_get_instance - Get a unique integer ID * * This routine allocates a unique integer ID from lpfc_hba_index pool. It * uses the kernel idr facility to perform the task. * * Return codes: * instance - a unique integer ID allocated as the new instance. * -1 - lpfc get instance failed. **/ int lpfc_get_instance(void) { int ret; ret = idr_alloc(&lpfc_hba_index, NULL, 0, 0, GFP_KERNEL); return ret < 0 ? -1 : ret; } /** * lpfc_scan_finished - method for SCSI layer to detect whether scan is done * @shost: pointer to SCSI host data structure. * @time: elapsed time of the scan in jiffies. * * This routine is called by the SCSI layer with a SCSI host to determine * whether the scan host is finished. * * Note: there is no scan_start function as adapter initialization will have * asynchronously kicked off the link initialization. * * Return codes * 0 - SCSI host scan is not over yet. * 1 - SCSI host scan is over. **/ int lpfc_scan_finished(struct Scsi_Host *shost, unsigned long time) { struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; struct lpfc_hba *phba = vport->phba; int stat = 0; spin_lock_irq(shost->host_lock); if (vport->load_flag & FC_UNLOADING) { stat = 1; goto finished; } if (time >= msecs_to_jiffies(30 * 1000)) { lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "0461 Scanning longer than 30 " "seconds. Continuing initialization\n"); stat = 1; goto finished; } if (time >= msecs_to_jiffies(15 * 1000) && phba->link_state <= LPFC_LINK_DOWN) { lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "0465 Link down longer than 15 " "seconds. Continuing initialization\n"); stat = 1; goto finished; } if (vport->port_state != LPFC_VPORT_READY) goto finished; if (vport->num_disc_nodes || vport->fc_prli_sent) goto finished; if (vport->fc_map_cnt == 0 && time < msecs_to_jiffies(2 * 1000)) goto finished; if ((phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) != 0) goto finished; stat = 1; finished: spin_unlock_irq(shost->host_lock); return stat; } /** * lpfc_host_attrib_init - Initialize SCSI host attributes on a FC port * @shost: pointer to SCSI host data structure. * * This routine initializes a given SCSI host attributes on a FC port. The * SCSI host can be either on top of a physical port or a virtual port. **/ void lpfc_host_attrib_init(struct Scsi_Host *shost) { struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; struct lpfc_hba *phba = vport->phba; /* * Set fixed host attributes. Must done after lpfc_sli_hba_setup(). */ fc_host_node_name(shost) = wwn_to_u64(vport->fc_nodename.u.wwn); fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn); fc_host_supported_classes(shost) = FC_COS_CLASS3; memset(fc_host_supported_fc4s(shost), 0, sizeof(fc_host_supported_fc4s(shost))); fc_host_supported_fc4s(shost)[2] = 1; fc_host_supported_fc4s(shost)[7] = 1; lpfc_vport_symbolic_node_name(vport, fc_host_symbolic_name(shost), sizeof fc_host_symbolic_name(shost)); fc_host_supported_speeds(shost) = 0; if (phba->lmt & LMT_16Gb) fc_host_supported_speeds(shost) |= FC_PORTSPEED_16GBIT; if (phba->lmt & LMT_10Gb) fc_host_supported_speeds(shost) |= FC_PORTSPEED_10GBIT; if (phba->lmt & LMT_8Gb) fc_host_supported_speeds(shost) |= FC_PORTSPEED_8GBIT; if (phba->lmt & LMT_4Gb) fc_host_supported_speeds(shost) |= FC_PORTSPEED_4GBIT; if (phba->lmt & LMT_2Gb) fc_host_supported_speeds(shost) |= FC_PORTSPEED_2GBIT; if (phba->lmt & LMT_1Gb) fc_host_supported_speeds(shost) |= FC_PORTSPEED_1GBIT; fc_host_maxframe_size(shost) = (((uint32_t) vport->fc_sparam.cmn.bbRcvSizeMsb & 0x0F) << 8) | (uint32_t) vport->fc_sparam.cmn.bbRcvSizeLsb; fc_host_dev_loss_tmo(shost) = vport->cfg_devloss_tmo; /* This value is also unchanging */ memset(fc_host_active_fc4s(shost), 0, sizeof(fc_host_active_fc4s(shost))); fc_host_active_fc4s(shost)[2] = 1; fc_host_active_fc4s(shost)[7] = 1; fc_host_max_npiv_vports(shost) = phba->max_vpi; spin_lock_irq(shost->host_lock); vport->load_flag &= ~FC_LOADING; spin_unlock_irq(shost->host_lock); } /** * lpfc_stop_port_s3 - Stop SLI3 device port * @phba: pointer to lpfc hba data structure. * * This routine is invoked to stop an SLI3 device port, it stops the device * from generating interrupts and stops the device driver's timers for the * device. **/ static void lpfc_stop_port_s3(struct lpfc_hba *phba) { /* Clear all interrupt enable conditions */ writel(0, phba->HCregaddr); readl(phba->HCregaddr); /* flush */ /* Clear all pending interrupts */ writel(0xffffffff, phba->HAregaddr); readl(phba->HAregaddr); /* flush */ /* Reset some HBA SLI setup states */ lpfc_stop_hba_timers(phba); phba->pport->work_port_events = 0; } /** * lpfc_stop_port_s4 - Stop SLI4 device port * @phba: pointer to lpfc hba data structure. * * This routine is invoked to stop an SLI4 device port, it stops the device * from generating interrupts and stops the device driver's timers for the * device. **/ static void lpfc_stop_port_s4(struct lpfc_hba *phba) { /* Reset some HBA SLI4 setup states */ lpfc_stop_hba_timers(phba); phba->pport->work_port_events = 0; phba->sli4_hba.intr_enable = 0; } /** * lpfc_stop_port - Wrapper function for stopping hba port * @phba: Pointer to HBA context object. * * This routine wraps the actual SLI3 or SLI4 hba stop port routine from * the API jump table function pointer from the lpfc_hba struct. **/ void lpfc_stop_port(struct lpfc_hba *phba) { phba->lpfc_stop_port(phba); } /** * lpfc_fcf_redisc_wait_start_timer - Start fcf rediscover wait timer * @phba: Pointer to hba for which this call is being executed. * * This routine starts the timer waiting for the FCF rediscovery to complete. **/ void lpfc_fcf_redisc_wait_start_timer(struct lpfc_hba *phba) { unsigned long fcf_redisc_wait_tmo = (jiffies + msecs_to_jiffies(LPFC_FCF_REDISCOVER_WAIT_TMO)); /* Start fcf rediscovery wait period timer */ mod_timer(&phba->fcf.redisc_wait, fcf_redisc_wait_tmo); spin_lock_irq(&phba->hbalock); /* Allow action to new fcf asynchronous event */ phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE); /* Mark the FCF rediscovery pending state */ phba->fcf.fcf_flag |= FCF_REDISC_PEND; spin_unlock_irq(&phba->hbalock); } /** * lpfc_sli4_fcf_redisc_wait_tmo - FCF table rediscover wait timeout * @ptr: Map to lpfc_hba data structure pointer. * * This routine is invoked when waiting for FCF table rediscover has been * timed out. If new FCF record(s) has (have) been discovered during the * wait period, a new FCF event shall be added to the FCOE async event * list, and then worker thread shall be waked up for processing from the * worker thread context. **/ void lpfc_sli4_fcf_redisc_wait_tmo(unsigned long ptr) { struct lpfc_hba *phba = (struct lpfc_hba *)ptr; /* Don't send FCF rediscovery event if timer cancelled */ spin_lock_irq(&phba->hbalock); if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND)) { spin_unlock_irq(&phba->hbalock); return; } /* Clear FCF rediscovery timer pending flag */ phba->fcf.fcf_flag &= ~FCF_REDISC_PEND; /* FCF rediscovery event to worker thread */ phba->fcf.fcf_flag |= FCF_REDISC_EVT; spin_unlock_irq(&phba->hbalock); lpfc_printf_log(phba, KERN_INFO, LOG_FIP, "2776 FCF rediscover quiescent timer expired\n"); /* wake up worker thread */ lpfc_worker_wake_up(phba); } /** * lpfc_sli4_parse_latt_fault - Parse sli4 link-attention link fault code * @phba: pointer to lpfc hba data structure. * @acqe_link: pointer to the async link completion queue entry. * * This routine is to parse the SLI4 link-attention link fault code and * translate it into the base driver's read link attention mailbox command * status. * * Return: Link-attention status in terms of base driver's coding. **/ static uint16_t lpfc_sli4_parse_latt_fault(struct lpfc_hba *phba, struct lpfc_acqe_link *acqe_link) { uint16_t latt_fault; switch (bf_get(lpfc_acqe_link_fault, acqe_link)) { case LPFC_ASYNC_LINK_FAULT_NONE: case LPFC_ASYNC_LINK_FAULT_LOCAL: case LPFC_ASYNC_LINK_FAULT_REMOTE: latt_fault = 0; break; default: lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0398 Invalid link fault code: x%x\n", bf_get(lpfc_acqe_link_fault, acqe_link)); latt_fault = MBXERR_ERROR; break; } return latt_fault; } /** * lpfc_sli4_parse_latt_type - Parse sli4 link attention type * @phba: pointer to lpfc hba data structure. * @acqe_link: pointer to the async link completion queue entry. * * This routine is to parse the SLI4 link attention type and translate it * into the base driver's link attention type coding. * * Return: Link attention type in terms of base driver's coding. **/ static uint8_t lpfc_sli4_parse_latt_type(struct lpfc_hba *phba, struct lpfc_acqe_link *acqe_link) { uint8_t att_type; switch (bf_get(lpfc_acqe_link_status, acqe_link)) { case LPFC_ASYNC_LINK_STATUS_DOWN: case LPFC_ASYNC_LINK_STATUS_LOGICAL_DOWN: att_type = LPFC_ATT_LINK_DOWN; break; case LPFC_ASYNC_LINK_STATUS_UP: /* Ignore physical link up events - wait for logical link up */ att_type = LPFC_ATT_RESERVED; break; case LPFC_ASYNC_LINK_STATUS_LOGICAL_UP: att_type = LPFC_ATT_LINK_UP; break; default: lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0399 Invalid link attention type: x%x\n", bf_get(lpfc_acqe_link_status, acqe_link)); att_type = LPFC_ATT_RESERVED; break; } return att_type; } /** * lpfc_sli4_parse_latt_link_speed - Parse sli4 link-attention link speed * @phba: pointer to lpfc hba data structure. * @acqe_link: pointer to the async link completion queue entry. * * This routine is to parse the SLI4 link-attention link speed and translate * it into the base driver's link-attention link speed coding. * * Return: Link-attention link speed in terms of base driver's coding. **/ static uint8_t lpfc_sli4_parse_latt_link_speed(struct lpfc_hba *phba, struct lpfc_acqe_link *acqe_link) { uint8_t link_speed; switch (bf_get(lpfc_acqe_link_speed, acqe_link)) { case LPFC_ASYNC_LINK_SPEED_ZERO: case LPFC_ASYNC_LINK_SPEED_10MBPS: case LPFC_ASYNC_LINK_SPEED_100MBPS: link_speed = LPFC_LINK_SPEED_UNKNOWN; break; case LPFC_ASYNC_LINK_SPEED_1GBPS: link_speed = LPFC_LINK_SPEED_1GHZ; break; case LPFC_ASYNC_LINK_SPEED_10GBPS: link_speed = LPFC_LINK_SPEED_10GHZ; break; default: lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0483 Invalid link-attention link speed: x%x\n", bf_get(lpfc_acqe_link_speed, acqe_link)); link_speed = LPFC_LINK_SPEED_UNKNOWN; break; } return link_speed; } /** * lpfc_sli_port_speed_get - Get sli3 link speed code to link speed * @phba: pointer to lpfc hba data structure. * * This routine is to get an SLI3 FC port's link speed in Mbps. * * Return: link speed in terms of Mbps. **/ uint32_t lpfc_sli_port_speed_get(struct lpfc_hba *phba) { uint32_t link_speed; if (!lpfc_is_link_up(phba)) return 0; switch (phba->fc_linkspeed) { case LPFC_LINK_SPEED_1GHZ: link_speed = 1000; break; case LPFC_LINK_SPEED_2GHZ: link_speed = 2000; break; case LPFC_LINK_SPEED_4GHZ: link_speed = 4000; break; case LPFC_LINK_SPEED_8GHZ: link_speed = 8000; break; case LPFC_LINK_SPEED_10GHZ: link_speed = 10000; break; case LPFC_LINK_SPEED_16GHZ: link_speed = 16000; break; default: link_speed = 0; } return link_speed; } /** * lpfc_sli4_port_speed_parse - Parse async evt link speed code to link speed * @phba: pointer to lpfc hba data structure. * @evt_code: asynchronous event code. * @speed_code: asynchronous event link speed code. * * This routine is to parse the giving SLI4 async event link speed code into * value of Mbps for the link speed. * * Return: link speed in terms of Mbps. **/ static uint32_t lpfc_sli4_port_speed_parse(struct lpfc_hba *phba, uint32_t evt_code, uint8_t speed_code) { uint32_t port_speed; switch (evt_code) { case LPFC_TRAILER_CODE_LINK: switch (speed_code) { case LPFC_EVT_CODE_LINK_NO_LINK: port_speed = 0; break; case LPFC_EVT_CODE_LINK_10_MBIT: port_speed = 10; break; case LPFC_EVT_CODE_LINK_100_MBIT: port_speed = 100; break; case LPFC_EVT_CODE_LINK_1_GBIT: port_speed = 1000; break; case LPFC_EVT_CODE_LINK_10_GBIT: port_speed = 10000; break; default: port_speed = 0; } break; case LPFC_TRAILER_CODE_FC: switch (speed_code) { case LPFC_EVT_CODE_FC_NO_LINK: port_speed = 0; break; case LPFC_EVT_CODE_FC_1_GBAUD: port_speed = 1000; break; case LPFC_EVT_CODE_FC_2_GBAUD: port_speed = 2000; break; case LPFC_EVT_CODE_FC_4_GBAUD: port_speed = 4000; break; case LPFC_EVT_CODE_FC_8_GBAUD: port_speed = 8000; break; case LPFC_EVT_CODE_FC_10_GBAUD: port_speed = 10000; break; case LPFC_EVT_CODE_FC_16_GBAUD: port_speed = 16000; break; default: port_speed = 0; } break; default: port_speed = 0; } return port_speed; } /** * lpfc_sli4_async_link_evt - Process the asynchronous FCoE link event * @phba: pointer to lpfc hba data structure. * @acqe_link: pointer to the async link completion queue entry. * * This routine is to handle the SLI4 asynchronous FCoE link event. **/ static void lpfc_sli4_async_link_evt(struct lpfc_hba *phba, struct lpfc_acqe_link *acqe_link) { struct lpfc_dmabuf *mp; LPFC_MBOXQ_t *pmb; MAILBOX_t *mb; struct lpfc_mbx_read_top *la; uint8_t att_type; int rc; att_type = lpfc_sli4_parse_latt_type(phba, acqe_link); if (att_type != LPFC_ATT_LINK_DOWN && att_type != LPFC_ATT_LINK_UP) return; phba->fcoe_eventtag = acqe_link->event_tag; pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!pmb) { lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "0395 The mboxq allocation failed\n"); return; } mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); if (!mp) { lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "0396 The lpfc_dmabuf allocation failed\n"); goto out_free_pmb; } mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys); if (!mp->virt) { lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "0397 The mbuf allocation failed\n"); goto out_free_dmabuf; } /* Cleanup any outstanding ELS commands */ lpfc_els_flush_all_cmd(phba); /* Block ELS IOCBs until we have done process link event */ phba->sli.ring[LPFC_ELS_RING].flag |= LPFC_STOP_IOCB_EVENT; /* Update link event statistics */ phba->sli.slistat.link_event++; /* Create lpfc_handle_latt mailbox command from link ACQE */ lpfc_read_topology(phba, pmb, mp); pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology; pmb->vport = phba->pport; /* Keep the link status for extra SLI4 state machine reference */ phba->sli4_hba.link_state.speed = lpfc_sli4_port_speed_parse(phba, LPFC_TRAILER_CODE_LINK, bf_get(lpfc_acqe_link_speed, acqe_link)); phba->sli4_hba.link_state.duplex = bf_get(lpfc_acqe_link_duplex, acqe_link); phba->sli4_hba.link_state.status = bf_get(lpfc_acqe_link_status, acqe_link); phba->sli4_hba.link_state.type = bf_get(lpfc_acqe_link_type, acqe_link); phba->sli4_hba.link_state.number = bf_get(lpfc_acqe_link_number, acqe_link); phba->sli4_hba.link_state.fault = bf_get(lpfc_acqe_link_fault, acqe_link); phba->sli4_hba.link_state.logical_speed = bf_get(lpfc_acqe_logical_link_speed, acqe_link) * 10; lpfc_printf_log(phba, KERN_INFO, LOG_SLI, "2900 Async FC/FCoE Link event - Speed:%dGBit " "duplex:x%x LA Type:x%x Port Type:%d Port Number:%d " "Logical speed:%dMbps Fault:%d\n", phba->sli4_hba.link_state.speed, phba->sli4_hba.link_state.topology, phba->sli4_hba.link_state.status, phba->sli4_hba.link_state.type, phba->sli4_hba.link_state.number, phba->sli4_hba.link_state.logical_speed, phba->sli4_hba.link_state.fault); /* * For FC Mode: issue the READ_TOPOLOGY mailbox command to fetch * topology info. Note: Optional for non FC-AL ports. */ if (!(phba->hba_flag & HBA_FCOE_MODE)) { rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT); if (rc == MBX_NOT_FINISHED) goto out_free_dmabuf; return; } /* * For FCoE Mode: fill in all the topology information we need and call * the READ_TOPOLOGY completion routine to continue without actually * sending the READ_TOPOLOGY mailbox command to the port. */ /* Parse and translate status field */ mb = &pmb->u.mb; mb->mbxStatus = lpfc_sli4_parse_latt_fault(phba, acqe_link); /* Parse and translate link attention fields */ la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop; la->eventTag = acqe_link->event_tag; bf_set(lpfc_mbx_read_top_att_type, la, att_type); bf_set(lpfc_mbx_read_top_link_spd, la, lpfc_sli4_parse_latt_link_speed(phba, acqe_link)); /* Fake the the following irrelvant fields */ bf_set(lpfc_mbx_read_top_topology, la, LPFC_TOPOLOGY_PT_PT); bf_set(lpfc_mbx_read_top_alpa_granted, la, 0); bf_set(lpfc_mbx_read_top_il, la, 0); bf_set(lpfc_mbx_read_top_pb, la, 0); bf_set(lpfc_mbx_read_top_fa, la, 0); bf_set(lpfc_mbx_read_top_mm, la, 0); /* Invoke the lpfc_handle_latt mailbox command callback function */ lpfc_mbx_cmpl_read_topology(phba, pmb); return; out_free_dmabuf: kfree(mp); out_free_pmb: mempool_free(pmb, phba->mbox_mem_pool); } /** * lpfc_sli4_async_fc_evt - Process the asynchronous FC link event * @phba: pointer to lpfc hba data structure. * @acqe_fc: pointer to the async fc completion queue entry. * * This routine is to handle the SLI4 asynchronous FC event. It will simply log * that the event was received and then issue a read_topology mailbox command so * that the rest of the driver will treat it the same as SLI3. **/ static void lpfc_sli4_async_fc_evt(struct lpfc_hba *phba, struct lpfc_acqe_fc_la *acqe_fc) { struct lpfc_dmabuf *mp; LPFC_MBOXQ_t *pmb; int rc; if (bf_get(lpfc_trailer_type, acqe_fc) != LPFC_FC_LA_EVENT_TYPE_FC_LINK) { lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "2895 Non FC link Event detected.(%d)\n", bf_get(lpfc_trailer_type, acqe_fc)); return; } /* Keep the link status for extra SLI4 state machine reference */ phba->sli4_hba.link_state.speed = lpfc_sli4_port_speed_parse(phba, LPFC_TRAILER_CODE_FC, bf_get(lpfc_acqe_fc_la_speed, acqe_fc)); phba->sli4_hba.link_state.duplex = LPFC_ASYNC_LINK_DUPLEX_FULL; phba->sli4_hba.link_state.topology = bf_get(lpfc_acqe_fc_la_topology, acqe_fc); phba->sli4_hba.link_state.status = bf_get(lpfc_acqe_fc_la_att_type, acqe_fc); phba->sli4_hba.link_state.type = bf_get(lpfc_acqe_fc_la_port_type, acqe_fc); phba->sli4_hba.link_state.number = bf_get(lpfc_acqe_fc_la_port_number, acqe_fc); phba->sli4_hba.link_state.fault = bf_get(lpfc_acqe_link_fault, acqe_fc); phba->sli4_hba.link_state.logical_speed = bf_get(lpfc_acqe_fc_la_llink_spd, acqe_fc) * 10; lpfc_printf_log(phba, KERN_INFO, LOG_SLI, "2896 Async FC event - Speed:%dGBaud Topology:x%x " "LA Type:x%x Port Type:%d Port Number:%d Logical speed:" "%dMbps Fault:%d\n", phba->sli4_hba.link_state.speed, phba->sli4_hba.link_state.topology, phba->sli4_hba.link_state.status, phba->sli4_hba.link_state.type, phba->sli4_hba.link_state.number, phba->sli4_hba.link_state.logical_speed, phba->sli4_hba.link_state.fault); pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!pmb) { lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "2897 The mboxq allocation failed\n"); return; } mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); if (!mp) { lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "2898 The lpfc_dmabuf allocation failed\n"); goto out_free_pmb; } mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys); if (!mp->virt) { lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "2899 The mbuf allocation failed\n"); goto out_free_dmabuf; } /* Cleanup any outstanding ELS commands */ lpfc_els_flush_all_cmd(phba); /* Block ELS IOCBs until we have done process link event */ phba->sli.ring[LPFC_ELS_RING].flag |= LPFC_STOP_IOCB_EVENT; /* Update link event statistics */ phba->sli.slistat.link_event++; /* Create lpfc_handle_latt mailbox command from link ACQE */ lpfc_read_topology(phba, pmb, mp); pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology; pmb->vport = phba->pport; rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT); if (rc == MBX_NOT_FINISHED) goto out_free_dmabuf; return; out_free_dmabuf: kfree(mp); out_free_pmb: mempool_free(pmb, phba->mbox_mem_pool); } /** * lpfc_sli4_async_sli_evt - Process the asynchronous SLI link event * @phba: pointer to lpfc hba data structure. * @acqe_fc: pointer to the async SLI completion queue entry. * * This routine is to handle the SLI4 asynchronous SLI events. **/ static void lpfc_sli4_async_sli_evt(struct lpfc_hba *phba, struct lpfc_acqe_sli *acqe_sli) { char port_name; char message[128]; uint8_t status; struct lpfc_acqe_misconfigured_event *misconfigured; /* special case misconfigured event as it contains data for all ports */ if ((bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) != LPFC_SLI_INTF_IF_TYPE_2) || (bf_get(lpfc_trailer_type, acqe_sli) != LPFC_SLI_EVENT_TYPE_MISCONFIGURED)) { lpfc_printf_log(phba, KERN_INFO, LOG_SLI, "2901 Async SLI event - Event Data1:x%08x Event Data2:" "x%08x SLI Event Type:%d\n", acqe_sli->event_data1, acqe_sli->event_data2, bf_get(lpfc_trailer_type, acqe_sli)); return; } port_name = phba->Port[0]; if (port_name == 0x00) port_name = '?'; /* get port name is empty */ misconfigured = (struct lpfc_acqe_misconfigured_event *) &acqe_sli->event_data1; /* fetch the status for this port */ switch (phba->sli4_hba.lnk_info.lnk_no) { case LPFC_LINK_NUMBER_0: status = bf_get(lpfc_sli_misconfigured_port0, &misconfigured->theEvent); break; case LPFC_LINK_NUMBER_1: status = bf_get(lpfc_sli_misconfigured_port1, &misconfigured->theEvent); break; case LPFC_LINK_NUMBER_2: status = bf_get(lpfc_sli_misconfigured_port2, &misconfigured->theEvent); break; case LPFC_LINK_NUMBER_3: status = bf_get(lpfc_sli_misconfigured_port3, &misconfigured->theEvent); break; default: status = ~LPFC_SLI_EVENT_STATUS_VALID; break; } switch (status) { case LPFC_SLI_EVENT_STATUS_VALID: return; /* no message if the sfp is okay */ case LPFC_SLI_EVENT_STATUS_NOT_PRESENT: sprintf(message, "Optics faulted/incorrectly installed/not " \ "installed - Reseat optics, if issue not " "resolved, replace."); break; case LPFC_SLI_EVENT_STATUS_WRONG_TYPE: sprintf(message, "Optics of two types installed - Remove one optic or " \ "install matching pair of optics."); break; case LPFC_SLI_EVENT_STATUS_UNSUPPORTED: sprintf(message, "Incompatible optics - Replace with " \ "compatible optics for card to function."); break; default: /* firmware is reporting a status we don't know about */ sprintf(message, "Unknown event status x%02x", status); break; } lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "3176 Misconfigured Physical Port - " "Port Name %c %s\n", port_name, message); } /** * lpfc_sli4_perform_vport_cvl - Perform clear virtual link on a vport * @vport: pointer to vport data structure. * * This routine is to perform Clear Virtual Link (CVL) on a vport in * response to a CVL event. * * Return the pointer to the ndlp with the vport if successful, otherwise * return NULL. **/ static struct lpfc_nodelist * lpfc_sli4_perform_vport_cvl(struct lpfc_vport *vport) { struct lpfc_nodelist *ndlp; struct Scsi_Host *shost; struct lpfc_hba *phba; if (!vport) return NULL; phba = vport->phba; if (!phba) return NULL; ndlp = lpfc_findnode_did(vport, Fabric_DID); if (!ndlp) { /* Cannot find existing Fabric ndlp, so allocate a new one */ ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL); if (!ndlp) return 0; lpfc_nlp_init(vport, ndlp, Fabric_DID); /* Set the node type */ ndlp->nlp_type |= NLP_FABRIC; /* Put ndlp onto node list */ lpfc_enqueue_node(vport, ndlp); } else if (!NLP_CHK_NODE_ACT(ndlp)) { /* re-setup ndlp without removing from node list */ ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE); if (!ndlp) return 0; } if ((phba->pport->port_state < LPFC_FLOGI) && (phba->pport->port_state != LPFC_VPORT_FAILED)) return NULL; /* If virtual link is not yet instantiated ignore CVL */ if ((vport != phba->pport) && (vport->port_state < LPFC_FDISC) && (vport->port_state != LPFC_VPORT_FAILED)) return NULL; shost = lpfc_shost_from_vport(vport); if (!shost) return NULL; lpfc_linkdown_port(vport); lpfc_cleanup_pending_mbox(vport); spin_lock_irq(shost->host_lock); vport->fc_flag |= FC_VPORT_CVL_RCVD; spin_unlock_irq(shost->host_lock); return ndlp; } /** * lpfc_sli4_perform_all_vport_cvl - Perform clear virtual link on all vports * @vport: pointer to lpfc hba data structure. * * This routine is to perform Clear Virtual Link (CVL) on all vports in * response to a FCF dead event. **/ static void lpfc_sli4_perform_all_vport_cvl(struct lpfc_hba *phba) { struct lpfc_vport **vports; int i; vports = lpfc_create_vport_work_array(phba); if (vports) for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) lpfc_sli4_perform_vport_cvl(vports[i]); lpfc_destroy_vport_work_array(phba, vports); } /** * lpfc_sli4_perform_inuse_fcf_recovery - Perform inuse fcf recovery * @vport: pointer to lpfc hba data structure. * * This routine is to perform FCF recovery when the in-use FCF either dead or * got modified. **/ static void lpfc_sli4_perform_inuse_fcf_recovery(struct lpfc_hba *phba, struct lpfc_acqe_fip *acqe_fip) { int rc; spin_lock_irq(&phba->hbalock); /* Mark the fast failover process in progress */ phba->fcf.fcf_flag |= FCF_DEAD_DISC; spin_unlock_irq(&phba->hbalock); lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, "2771 Start FCF fast failover process due to in-use " "FCF DEAD/MODIFIED event: evt_tag:x%x, index:x%x\n", acqe_fip->event_tag, acqe_fip->index); rc = lpfc_sli4_redisc_fcf_table(phba); if (rc) { lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY, "2772 Issue FCF rediscover mabilbox command " "failed, fail through to FCF dead event\n"); spin_lock_irq(&phba->hbalock); phba->fcf.fcf_flag &= ~FCF_DEAD_DISC; spin_unlock_irq(&phba->hbalock); /* * Last resort will fail over by treating this as a link * down to FCF registration. */ lpfc_sli4_fcf_dead_failthrough(phba); } else { /* Reset FCF roundrobin bmask for new discovery */ lpfc_sli4_clear_fcf_rr_bmask(phba); /* * Handling fast FCF failover to a DEAD FCF event is * considered equalivant to receiving CVL to all vports. */ lpfc_sli4_perform_all_vport_cvl(phba); } } /** * lpfc_sli4_async_fip_evt - Process the asynchronous FCoE FIP event * @phba: pointer to lpfc hba data structure. * @acqe_link: pointer to the async fcoe completion queue entry. * * This routine is to handle the SLI4 asynchronous fcoe event. **/ static void lpfc_sli4_async_fip_evt(struct lpfc_hba *phba, struct lpfc_acqe_fip *acqe_fip) { uint8_t event_type = bf_get(lpfc_trailer_type, acqe_fip); int rc; struct lpfc_vport *vport; struct lpfc_nodelist *ndlp; struct Scsi_Host *shost; int active_vlink_present; struct lpfc_vport **vports; int i; phba->fc_eventTag = acqe_fip->event_tag; phba->fcoe_eventtag = acqe_fip->event_tag; switch (event_type) { case LPFC_FIP_EVENT_TYPE_NEW_FCF: case LPFC_FIP_EVENT_TYPE_FCF_PARAM_MOD: if (event_type == LPFC_FIP_EVENT_TYPE_NEW_FCF) lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY, "2546 New FCF event, evt_tag:x%x, " "index:x%x\n", acqe_fip->event_tag, acqe_fip->index); else lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_DISCOVERY, "2788 FCF param modified event, " "evt_tag:x%x, index:x%x\n", acqe_fip->event_tag, acqe_fip->index); if (phba->fcf.fcf_flag & FCF_DISCOVERY) { /* * During period of FCF discovery, read the FCF * table record indexed by the event to update * FCF roundrobin failover eligible FCF bmask. */ lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, "2779 Read FCF (x%x) for updating " "roundrobin FCF failover bmask\n", acqe_fip->index); rc = lpfc_sli4_read_fcf_rec(phba, acqe_fip->index); } /* If the FCF discovery is in progress, do nothing. */ spin_lock_irq(&phba->hbalock); if (phba->hba_flag & FCF_TS_INPROG) { spin_unlock_irq(&phba->hbalock); break; } /* If fast FCF failover rescan event is pending, do nothing */ if (phba->fcf.fcf_flag & FCF_REDISC_EVT) { spin_unlock_irq(&phba->hbalock); break; } /* If FCF has been in discovered state, perform rediscovery * only if the FCF with the same index of the in-use FCF got * modified during normal operation. Otherwise, do nothing. */ if (phba->pport->port_state > LPFC_FLOGI) { spin_unlock_irq(&phba->hbalock); if (phba->fcf.current_rec.fcf_indx == acqe_fip->index) { lpfc_printf_log(phba, KERN_ERR, LOG_FIP, "3300 In-use FCF (%d) " "modified, perform FCF " "rediscovery\n", acqe_fip->index); lpfc_sli4_perform_inuse_fcf_recovery(phba, acqe_fip); } break; } spin_unlock_irq(&phba->hbalock); /* Otherwise, scan the entire FCF table and re-discover SAN */ lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, "2770 Start FCF table scan per async FCF " "event, evt_tag:x%x, index:x%x\n", acqe_fip->event_tag, acqe_fip->index); rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST); if (rc) lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY, "2547 Issue FCF scan read FCF mailbox " "command failed (x%x)\n", rc); break; case LPFC_FIP_EVENT_TYPE_FCF_TABLE_FULL: lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "2548 FCF Table full count 0x%x tag 0x%x\n", bf_get(lpfc_acqe_fip_fcf_count, acqe_fip), acqe_fip->event_tag); break; case LPFC_FIP_EVENT_TYPE_FCF_DEAD: phba->fcoe_cvl_eventtag = acqe_fip->event_tag; lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY, "2549 FCF (x%x) disconnected from network, " "tag:x%x\n", acqe_fip->index, acqe_fip->event_tag); /* * If we are in the middle of FCF failover process, clear * the corresponding FCF bit in the roundrobin bitmap. */ spin_lock_irq(&phba->hbalock); if (phba->fcf.fcf_flag & FCF_DISCOVERY) { spin_unlock_irq(&phba->hbalock); /* Update FLOGI FCF failover eligible FCF bmask */ lpfc_sli4_fcf_rr_index_clear(phba, acqe_fip->index); break; } spin_unlock_irq(&phba->hbalock); /* If the event is not for currently used fcf do nothing */ if (phba->fcf.current_rec.fcf_indx != acqe_fip->index) break; /* * Otherwise, request the port to rediscover the entire FCF * table for a fast recovery from case that the current FCF * is no longer valid as we are not in the middle of FCF * failover process already. */ lpfc_sli4_perform_inuse_fcf_recovery(phba, acqe_fip); break; case LPFC_FIP_EVENT_TYPE_CVL: phba->fcoe_cvl_eventtag = acqe_fip->event_tag; lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY, "2718 Clear Virtual Link Received for VPI 0x%x" " tag 0x%x\n", acqe_fip->index, acqe_fip->event_tag); vport = lpfc_find_vport_by_vpid(phba, acqe_fip->index); ndlp = lpfc_sli4_perform_vport_cvl(vport); if (!ndlp) break; active_vlink_present = 0; vports = lpfc_create_vport_work_array(phba); if (vports) { for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { if ((!(vports[i]->fc_flag & FC_VPORT_CVL_RCVD)) && (vports[i]->port_state > LPFC_FDISC)) { active_vlink_present = 1; break; } } lpfc_destroy_vport_work_array(phba, vports); } if (active_vlink_present) { /* * If there are other active VLinks present, * re-instantiate the Vlink using FDISC. */ mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000)); shost = lpfc_shost_from_vport(vport); spin_lock_irq(shost->host_lock); ndlp->nlp_flag |= NLP_DELAY_TMO; spin_unlock_irq(shost->host_lock); ndlp->nlp_last_elscmd = ELS_CMD_FDISC; vport->port_state = LPFC_FDISC; } else { /* * Otherwise, we request port to rediscover * the entire FCF table for a fast recovery * from possible case that the current FCF * is no longer valid if we are not already * in the FCF failover process. */ spin_lock_irq(&phba->hbalock); if (phba->fcf.fcf_flag & FCF_DISCOVERY) { spin_unlock_irq(&phba->hbalock); break; } /* Mark the fast failover process in progress */ phba->fcf.fcf_flag |= FCF_ACVL_DISC; spin_unlock_irq(&phba->hbalock); lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, "2773 Start FCF failover per CVL, " "evt_tag:x%x\n", acqe_fip->event_tag); rc = lpfc_sli4_redisc_fcf_table(phba); if (rc) { lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY, "2774 Issue FCF rediscover " "mabilbox command failed, " "through to CVL event\n"); spin_lock_irq(&phba->hbalock); phba->fcf.fcf_flag &= ~FCF_ACVL_DISC; spin_unlock_irq(&phba->hbalock); /* * Last resort will be re-try on the * the current registered FCF entry. */ lpfc_retry_pport_discovery(phba); } else /* * Reset FCF roundrobin bmask for new * discovery. */ lpfc_sli4_clear_fcf_rr_bmask(phba); } break; default: lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "0288 Unknown FCoE event type 0x%x event tag " "0x%x\n", event_type, acqe_fip->event_tag); break; } } /** * lpfc_sli4_async_dcbx_evt - Process the asynchronous dcbx event * @phba: pointer to lpfc hba data structure. * @acqe_link: pointer to the async dcbx completion queue entry. * * This routine is to handle the SLI4 asynchronous dcbx event. **/ static void lpfc_sli4_async_dcbx_evt(struct lpfc_hba *phba, struct lpfc_acqe_dcbx *acqe_dcbx) { phba->fc_eventTag = acqe_dcbx->event_tag; lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "0290 The SLI4 DCBX asynchronous event is not " "handled yet\n"); } /** * lpfc_sli4_async_grp5_evt - Process the asynchronous group5 event * @phba: pointer to lpfc hba data structure. * @acqe_link: pointer to the async grp5 completion queue entry. * * This routine is to handle the SLI4 asynchronous grp5 event. A grp5 event * is an asynchronous notified of a logical link speed change. The Port * reports the logical link speed in units of 10Mbps. **/ static void lpfc_sli4_async_grp5_evt(struct lpfc_hba *phba, struct lpfc_acqe_grp5 *acqe_grp5) { uint16_t prev_ll_spd; phba->fc_eventTag = acqe_grp5->event_tag; phba->fcoe_eventtag = acqe_grp5->event_tag; prev_ll_spd = phba->sli4_hba.link_state.logical_speed; phba->sli4_hba.link_state.logical_speed = (bf_get(lpfc_acqe_grp5_llink_spd, acqe_grp5)) * 10; lpfc_printf_log(phba, KERN_INFO, LOG_SLI, "2789 GRP5 Async Event: Updating logical link speed " "from %dMbps to %dMbps\n", prev_ll_spd, phba->sli4_hba.link_state.logical_speed); } /** * lpfc_sli4_async_event_proc - Process all the pending asynchronous event * @phba: pointer to lpfc hba data structure. * * This routine is invoked by the worker thread to process all the pending * SLI4 asynchronous events. **/ void lpfc_sli4_async_event_proc(struct lpfc_hba *phba) { struct lpfc_cq_event *cq_event; /* First, declare the async event has been handled */ spin_lock_irq(&phba->hbalock); phba->hba_flag &= ~ASYNC_EVENT; spin_unlock_irq(&phba->hbalock); /* Now, handle all the async events */ while (!list_empty(&phba->sli4_hba.sp_asynce_work_queue)) { /* Get the first event from the head of the event queue */ spin_lock_irq(&phba->hbalock); list_remove_head(&phba->sli4_hba.sp_asynce_work_queue, cq_event, struct lpfc_cq_event, list); spin_unlock_irq(&phba->hbalock); /* Process the asynchronous event */ switch (bf_get(lpfc_trailer_code, &cq_event->cqe.mcqe_cmpl)) { case LPFC_TRAILER_CODE_LINK: lpfc_sli4_async_link_evt(phba, &cq_event->cqe.acqe_link); break; case LPFC_TRAILER_CODE_FCOE: lpfc_sli4_async_fip_evt(phba, &cq_event->cqe.acqe_fip); break; case LPFC_TRAILER_CODE_DCBX: lpfc_sli4_async_dcbx_evt(phba, &cq_event->cqe.acqe_dcbx); break; case LPFC_TRAILER_CODE_GRP5: lpfc_sli4_async_grp5_evt(phba, &cq_event->cqe.acqe_grp5); break; case LPFC_TRAILER_CODE_FC: lpfc_sli4_async_fc_evt(phba, &cq_event->cqe.acqe_fc); break; case LPFC_TRAILER_CODE_SLI: lpfc_sli4_async_sli_evt(phba, &cq_event->cqe.acqe_sli); break; default: lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "1804 Invalid asynchrous event code: " "x%x\n", bf_get(lpfc_trailer_code, &cq_event->cqe.mcqe_cmpl)); break; } /* Free the completion event processed to the free pool */ lpfc_sli4_cq_event_release(phba, cq_event); } } /** * lpfc_sli4_fcf_redisc_event_proc - Process fcf table rediscovery event * @phba: pointer to lpfc hba data structure. * * This routine is invoked by the worker thread to process FCF table * rediscovery pending completion event. **/ void lpfc_sli4_fcf_redisc_event_proc(struct lpfc_hba *phba) { int rc; spin_lock_irq(&phba->hbalock); /* Clear FCF rediscovery timeout event */ phba->fcf.fcf_flag &= ~FCF_REDISC_EVT; /* Clear driver fast failover FCF record flag */ phba->fcf.failover_rec.flag = 0; /* Set state for FCF fast failover */ phba->fcf.fcf_flag |= FCF_REDISC_FOV; spin_unlock_irq(&phba->hbalock); /* Scan FCF table from the first entry to re-discover SAN */ lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, "2777 Start post-quiescent FCF table scan\n"); rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST); if (rc) lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY, "2747 Issue FCF scan read FCF mailbox " "command failed 0x%x\n", rc); } /** * lpfc_api_table_setup - Set up per hba pci-device group func api jump table * @phba: pointer to lpfc hba data structure. * @dev_grp: The HBA PCI-Device group number. * * This routine is invoked to set up the per HBA PCI-Device group function * API jump table entries. * * Return: 0 if success, otherwise -ENODEV **/ int lpfc_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp) { int rc; /* Set up lpfc PCI-device group */ phba->pci_dev_grp = dev_grp; /* The LPFC_PCI_DEV_OC uses SLI4 */ if (dev_grp == LPFC_PCI_DEV_OC) phba->sli_rev = LPFC_SLI_REV4; /* Set up device INIT API function jump table */ rc = lpfc_init_api_table_setup(phba, dev_grp); if (rc) return -ENODEV; /* Set up SCSI API function jump table */ rc = lpfc_scsi_api_table_setup(phba, dev_grp); if (rc) return -ENODEV; /* Set up SLI API function jump table */ rc = lpfc_sli_api_table_setup(phba, dev_grp); if (rc) return -ENODEV; /* Set up MBOX API function jump table */ rc = lpfc_mbox_api_table_setup(phba, dev_grp); if (rc) return -ENODEV; return 0; } /** * lpfc_log_intr_mode - Log the active interrupt mode * @phba: pointer to lpfc hba data structure. * @intr_mode: active interrupt mode adopted. * * This routine it invoked to log the currently used active interrupt mode * to the device. **/ static void lpfc_log_intr_mode(struct lpfc_hba *phba, uint32_t intr_mode) { switch (intr_mode) { case 0: lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "0470 Enable INTx interrupt mode.\n"); break; case 1: lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "0481 Enabled MSI interrupt mode.\n"); break; case 2: lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "0480 Enabled MSI-X interrupt mode.\n"); break; default: lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0482 Illegal interrupt mode.\n"); break; } return; } /** * lpfc_enable_pci_dev - Enable a generic PCI device. * @phba: pointer to lpfc hba data structure. * * This routine is invoked to enable the PCI device that is common to all * PCI devices. * * Return codes * 0 - successful * other values - error **/ static int lpfc_enable_pci_dev(struct lpfc_hba *phba) { struct pci_dev *pdev; int bars = 0; /* Obtain PCI device reference */ if (!phba->pcidev) goto out_error; else pdev = phba->pcidev; /* Select PCI BARs */ bars = pci_select_bars(pdev, IORESOURCE_MEM); /* Enable PCI device */ if (pci_enable_device_mem(pdev)) goto out_error; /* Request PCI resource for the device */ if (pci_request_selected_regions(pdev, bars, LPFC_DRIVER_NAME)) goto out_disable_device; /* Set up device as PCI master and save state for EEH */ pci_set_master(pdev); pci_try_set_mwi(pdev); pci_save_state(pdev); /* PCIe EEH recovery on powerpc platforms needs fundamental reset */ if (pci_find_capability(pdev, PCI_CAP_ID_EXP)) pdev->needs_freset = 1; return 0; out_disable_device: pci_disable_device(pdev); out_error: lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "1401 Failed to enable pci device, bars:x%x\n", bars); return -ENODEV; } /** * lpfc_disable_pci_dev - Disable a generic PCI device. * @phba: pointer to lpfc hba data structure. * * This routine is invoked to disable the PCI device that is common to all * PCI devices. **/ static void lpfc_disable_pci_dev(struct lpfc_hba *phba) { struct pci_dev *pdev; int bars; /* Obtain PCI device reference */ if (!phba->pcidev) return; else pdev = phba->pcidev; /* Select PCI BARs */ bars = pci_select_bars(pdev, IORESOURCE_MEM); /* Release PCI resource and disable PCI device */ pci_release_selected_regions(pdev, bars); pci_disable_device(pdev); /* Null out PCI private reference to driver */ pci_set_drvdata(pdev, NULL); return; } /** * lpfc_reset_hba - Reset a hba * @phba: pointer to lpfc hba data structure. * * This routine is invoked to reset a hba device. It brings the HBA * offline, performs a board restart, and then brings the board back * online. The lpfc_offline calls lpfc_sli_hba_down which will clean up * on outstanding mailbox commands. **/ void lpfc_reset_hba(struct lpfc_hba *phba) { /* If resets are disabled then set error state and return. */ if (!phba->cfg_enable_hba_reset) { phba->link_state = LPFC_HBA_ERROR; return; } lpfc_offline_prep(phba, LPFC_MBX_WAIT); lpfc_offline(phba); lpfc_sli_brdrestart(phba); lpfc_online(phba); lpfc_unblock_mgmt_io(phba); } /** * lpfc_sli_sriov_nr_virtfn_get - Get the number of sr-iov virtual functions * @phba: pointer to lpfc hba data structure. * * This function enables the PCI SR-IOV virtual functions to a physical * function. It invokes the PCI SR-IOV api with the @nr_vfn provided to * enable the number of virtual functions to the physical function. As * not all devices support SR-IOV, the return code from the pci_enable_sriov() * API call does not considered as an error condition for most of the device. **/ uint16_t lpfc_sli_sriov_nr_virtfn_get(struct lpfc_hba *phba) { struct pci_dev *pdev = phba->pcidev; uint16_t nr_virtfn; int pos; pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV); if (pos == 0) return 0; pci_read_config_word(pdev, pos + PCI_SRIOV_TOTAL_VF, &nr_virtfn); return nr_virtfn; } /** * lpfc_sli_probe_sriov_nr_virtfn - Enable a number of sr-iov virtual functions * @phba: pointer to lpfc hba data structure. * @nr_vfn: number of virtual functions to be enabled. * * This function enables the PCI SR-IOV virtual functions to a physical * function. It invokes the PCI SR-IOV api with the @nr_vfn provided to * enable the number of virtual functions to the physical function. As * not all devices support SR-IOV, the return code from the pci_enable_sriov() * API call does not considered as an error condition for most of the device. **/ int lpfc_sli_probe_sriov_nr_virtfn(struct lpfc_hba *phba, int nr_vfn) { struct pci_dev *pdev = phba->pcidev; uint16_t max_nr_vfn; int rc; max_nr_vfn = lpfc_sli_sriov_nr_virtfn_get(phba); if (nr_vfn > max_nr_vfn) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "3057 Requested vfs (%d) greater than " "supported vfs (%d)", nr_vfn, max_nr_vfn); return -EINVAL; } rc = pci_enable_sriov(pdev, nr_vfn); if (rc) { lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, "2806 Failed to enable sriov on this device " "with vfn number nr_vf:%d, rc:%d\n", nr_vfn, rc); } else lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, "2807 Successful enable sriov on this device " "with vfn number nr_vf:%d\n", nr_vfn); return rc; } /** * lpfc_sli_driver_resource_setup - Setup driver internal resources for SLI3 dev. * @phba: pointer to lpfc hba data structure. * * This routine is invoked to set up the driver internal resources specific to * support the SLI-3 HBA device it attached to. * * Return codes * 0 - successful * other values - error **/ static int lpfc_sli_driver_resource_setup(struct lpfc_hba *phba) { struct lpfc_sli *psli; int rc; /* * Initialize timers used by driver */ /* Heartbeat timer */ init_timer(&phba->hb_tmofunc); phba->hb_tmofunc.function = lpfc_hb_timeout; phba->hb_tmofunc.data = (unsigned long)phba; psli = &phba->sli; /* MBOX heartbeat timer */ init_timer(&psli->mbox_tmo); psli->mbox_tmo.function = lpfc_mbox_timeout; psli->mbox_tmo.data = (unsigned long) phba; /* FCP polling mode timer */ init_timer(&phba->fcp_poll_timer); phba->fcp_poll_timer.function = lpfc_poll_timeout; phba->fcp_poll_timer.data = (unsigned long) phba; /* Fabric block timer */ init_timer(&phba->fabric_block_timer); phba->fabric_block_timer.function = lpfc_fabric_block_timeout; phba->fabric_block_timer.data = (unsigned long) phba; /* EA polling mode timer */ init_timer(&phba->eratt_poll); phba->eratt_poll.function = lpfc_poll_eratt; phba->eratt_poll.data = (unsigned long) phba; /* Host attention work mask setup */ phba->work_ha_mask = (HA_ERATT | HA_MBATT | HA_LATT); phba->work_ha_mask |= (HA_RXMASK << (LPFC_ELS_RING * 4)); /* Get all the module params for configuring this host */ lpfc_get_cfgparam(phba); if (phba->pcidev->device == PCI_DEVICE_ID_HORNET) { phba->menlo_flag |= HBA_MENLO_SUPPORT; /* check for menlo minimum sg count */ if (phba->cfg_sg_seg_cnt < LPFC_DEFAULT_MENLO_SG_SEG_CNT) phba->cfg_sg_seg_cnt = LPFC_DEFAULT_MENLO_SG_SEG_CNT; } if (!phba->sli.ring) phba->sli.ring = (struct lpfc_sli_ring *) kzalloc(LPFC_SLI3_MAX_RING * sizeof(struct lpfc_sli_ring), GFP_KERNEL); if (!phba->sli.ring) return -ENOMEM; /* * Since lpfc_sg_seg_cnt is module parameter, the sg_dma_buf_size * used to create the sg_dma_buf_pool must be dynamically calculated. */ /* Initialize the host templates the configured values. */ lpfc_vport_template.sg_tablesize = phba->cfg_sg_seg_cnt; lpfc_template.sg_tablesize = phba->cfg_sg_seg_cnt; /* There are going to be 2 reserved BDEs: 1 FCP cmnd + 1 FCP rsp */ if (phba->cfg_enable_bg) { /* * The scsi_buf for a T10-DIF I/O will hold the FCP cmnd, * the FCP rsp, and a BDE for each. Sice we have no control * over how many protection data segments the SCSI Layer * will hand us (ie: there could be one for every block * in the IO), we just allocate enough BDEs to accomidate * our max amount and we need to limit lpfc_sg_seg_cnt to * minimize the risk of running out. */ phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp) + (LPFC_MAX_SG_SEG_CNT * sizeof(struct ulp_bde64)); if (phba->cfg_sg_seg_cnt > LPFC_MAX_SG_SEG_CNT_DIF) phba->cfg_sg_seg_cnt = LPFC_MAX_SG_SEG_CNT_DIF; /* Total BDEs in BPL for scsi_sg_list and scsi_sg_prot_list */ phba->cfg_total_seg_cnt = LPFC_MAX_SG_SEG_CNT; } else { /* * The scsi_buf for a regular I/O will hold the FCP cmnd, * the FCP rsp, a BDE for each, and a BDE for up to * cfg_sg_seg_cnt data segments. */ phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp) + ((phba->cfg_sg_seg_cnt + 2) * sizeof(struct ulp_bde64)); /* Total BDEs in BPL for scsi_sg_list */ phba->cfg_total_seg_cnt = phba->cfg_sg_seg_cnt + 2; } lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_FCP, "9088 sg_tablesize:%d dmabuf_size:%d total_bde:%d\n", phba->cfg_sg_seg_cnt, phba->cfg_sg_dma_buf_size, phba->cfg_total_seg_cnt); phba->max_vpi = LPFC_MAX_VPI; /* This will be set to correct value after config_port mbox */ phba->max_vports = 0; /* * Initialize the SLI Layer to run with lpfc HBAs. */ lpfc_sli_setup(phba); lpfc_sli_queue_setup(phba); /* Allocate device driver memory */ if (lpfc_mem_alloc(phba, BPL_ALIGN_SZ)) return -ENOMEM; /* * Enable sr-iov virtual functions if supported and configured * through the module parameter. */ if (phba->cfg_sriov_nr_virtfn > 0) { rc = lpfc_sli_probe_sriov_nr_virtfn(phba, phba->cfg_sriov_nr_virtfn); if (rc) { lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, "2808 Requested number of SR-IOV " "virtual functions (%d) is not " "supported\n", phba->cfg_sriov_nr_virtfn); phba->cfg_sriov_nr_virtfn = 0; } } return 0; } /** * lpfc_sli_driver_resource_unset - Unset drvr internal resources for SLI3 dev * @phba: pointer to lpfc hba data structure. * * This routine is invoked to unset the driver internal resources set up * specific for supporting the SLI-3 HBA device it attached to. **/ static void lpfc_sli_driver_resource_unset(struct lpfc_hba *phba) { /* Free device driver memory allocated */ lpfc_mem_free_all(phba); return; } /** * lpfc_sli4_driver_resource_setup - Setup drvr internal resources for SLI4 dev * @phba: pointer to lpfc hba data structure. * * This routine is invoked to set up the driver internal resources specific to * support the SLI-4 HBA device it attached to. * * Return codes * 0 - successful * other values - error **/ static int lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba) { struct lpfc_vector_map_info *cpup; struct lpfc_sli *psli; LPFC_MBOXQ_t *mboxq; int rc, i, hbq_count, max_buf_size; uint8_t pn_page[LPFC_MAX_SUPPORTED_PAGES] = {0}; struct lpfc_mqe *mqe; int longs; /* Before proceed, wait for POST done and device ready */ rc = lpfc_sli4_post_status_check(phba); if (rc) return -ENODEV; /* * Initialize timers used by driver */ /* Heartbeat timer */ init_timer(&phba->hb_tmofunc); phba->hb_tmofunc.function = lpfc_hb_timeout; phba->hb_tmofunc.data = (unsigned long)phba; init_timer(&phba->rrq_tmr); phba->rrq_tmr.function = lpfc_rrq_timeout; phba->rrq_tmr.data = (unsigned long)phba; psli = &phba->sli; /* MBOX heartbeat timer */ init_timer(&psli->mbox_tmo); psli->mbox_tmo.function = lpfc_mbox_timeout; psli->mbox_tmo.data = (unsigned long) phba; /* Fabric block timer */ init_timer(&phba->fabric_block_timer); phba->fabric_block_timer.function = lpfc_fabric_block_timeout; phba->fabric_block_timer.data = (unsigned long) phba; /* EA polling mode timer */ init_timer(&phba->eratt_poll); phba->eratt_poll.function = lpfc_poll_eratt; phba->eratt_poll.data = (unsigned long) phba; /* FCF rediscover timer */ init_timer(&phba->fcf.redisc_wait); phba->fcf.redisc_wait.function = lpfc_sli4_fcf_redisc_wait_tmo; phba->fcf.redisc_wait.data = (unsigned long)phba; /* * Control structure for handling external multi-buffer mailbox * command pass-through. */ memset((uint8_t *)&phba->mbox_ext_buf_ctx, 0, sizeof(struct lpfc_mbox_ext_buf_ctx)); INIT_LIST_HEAD(&phba->mbox_ext_buf_ctx.ext_dmabuf_list); /* * We need to do a READ_CONFIG mailbox command here before * calling lpfc_get_cfgparam. For VFs this will report the * MAX_XRI, MAX_VPI, MAX_RPI, MAX_IOCB, and MAX_VFI settings. * All of the resources allocated * for this Port are tied to these values. */ /* Get all the module params for configuring this host */ lpfc_get_cfgparam(phba); phba->max_vpi = LPFC_MAX_VPI; /* Eventually cfg_fcp_eq_count / cfg_fcp_wq_count will be depricated */ phba->cfg_fcp_io_channel = phba->cfg_fcp_eq_count; /* This will be set to correct value after the read_config mbox */ phba->max_vports = 0; /* Program the default value of vlan_id and fc_map */ phba->valid_vlan = 0; phba->fc_map[0] = LPFC_FCOE_FCF_MAP0; phba->fc_map[1] = LPFC_FCOE_FCF_MAP1; phba->fc_map[2] = LPFC_FCOE_FCF_MAP2; /* * For SLI4, instead of using ring 0 (LPFC_FCP_RING) for FCP commands * we will associate a new ring, for each FCP fastpath EQ/CQ/WQ tuple. */ if (!phba->sli.ring) phba->sli.ring = kzalloc( (LPFC_SLI3_MAX_RING + phba->cfg_fcp_io_channel) * sizeof(struct lpfc_sli_ring), GFP_KERNEL); if (!phba->sli.ring) return -ENOMEM; /* * It doesn't matter what family our adapter is in, we are * limited to 2 Pages, 512 SGEs, for our SGL. * There are going to be 2 reserved SGEs: 1 FCP cmnd + 1 FCP rsp */ max_buf_size = (2 * SLI4_PAGE_SIZE); if (phba->cfg_sg_seg_cnt > LPFC_MAX_SGL_SEG_CNT - 2) phba->cfg_sg_seg_cnt = LPFC_MAX_SGL_SEG_CNT - 2; /* * Since lpfc_sg_seg_cnt is module parameter, the sg_dma_buf_size * used to create the sg_dma_buf_pool must be dynamically calculated. */ if (phba->cfg_enable_bg) { /* * The scsi_buf for a T10-DIF I/O will hold the FCP cmnd, * the FCP rsp, and a SGE for each. Sice we have no control * over how many protection data segments the SCSI Layer * will hand us (ie: there could be one for every block * in the IO), we just allocate enough SGEs to accomidate * our max amount and we need to limit lpfc_sg_seg_cnt to * minimize the risk of running out. */ phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp) + max_buf_size; /* Total SGEs for scsi_sg_list and scsi_sg_prot_list */ phba->cfg_total_seg_cnt = LPFC_MAX_SGL_SEG_CNT; if (phba->cfg_sg_seg_cnt > LPFC_MAX_SG_SLI4_SEG_CNT_DIF) phba->cfg_sg_seg_cnt = LPFC_MAX_SG_SLI4_SEG_CNT_DIF; } else { /* * The scsi_buf for a regular I/O will hold the FCP cmnd, * the FCP rsp, a SGE for each, and a SGE for up to * cfg_sg_seg_cnt data segments. */ phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp) + ((phba->cfg_sg_seg_cnt + 2) * sizeof(struct sli4_sge)); /* Total SGEs for scsi_sg_list */ phba->cfg_total_seg_cnt = phba->cfg_sg_seg_cnt + 2; /* * NOTE: if (phba->cfg_sg_seg_cnt + 2) <= 256 we only need * to post 1 page for the SGL. */ } /* Initialize the host templates with the updated values. */ lpfc_vport_template.sg_tablesize = phba->cfg_sg_seg_cnt; lpfc_template.sg_tablesize = phba->cfg_sg_seg_cnt; if (phba->cfg_sg_dma_buf_size <= LPFC_MIN_SG_SLI4_BUF_SZ) phba->cfg_sg_dma_buf_size = LPFC_MIN_SG_SLI4_BUF_SZ; else phba->cfg_sg_dma_buf_size = SLI4_PAGE_ALIGN(phba->cfg_sg_dma_buf_size); lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_FCP, "9087 sg_tablesize:%d dmabuf_size:%d total_sge:%d\n", phba->cfg_sg_seg_cnt, phba->cfg_sg_dma_buf_size, phba->cfg_total_seg_cnt); /* Initialize buffer queue management fields */ hbq_count = lpfc_sli_hbq_count(); for (i = 0; i < hbq_count; ++i) INIT_LIST_HEAD(&phba->hbqs[i].hbq_buffer_list); INIT_LIST_HEAD(&phba->rb_pend_list); phba->hbqs[LPFC_ELS_HBQ].hbq_alloc_buffer = lpfc_sli4_rb_alloc; phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer = lpfc_sli4_rb_free; /* * Initialize the SLI Layer to run with lpfc SLI4 HBAs. */ /* Initialize the Abort scsi buffer list used by driver */ spin_lock_init(&phba->sli4_hba.abts_scsi_buf_list_lock); INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_scsi_buf_list); /* This abort list used by worker thread */ spin_lock_init(&phba->sli4_hba.abts_sgl_list_lock); /* * Initialize driver internal slow-path work queues */ /* Driver internel slow-path CQ Event pool */ INIT_LIST_HEAD(&phba->sli4_hba.sp_cqe_event_pool); /* Response IOCB work queue list */ INIT_LIST_HEAD(&phba->sli4_hba.sp_queue_event); /* Asynchronous event CQ Event work queue list */ INIT_LIST_HEAD(&phba->sli4_hba.sp_asynce_work_queue); /* Fast-path XRI aborted CQ Event work queue list */ INIT_LIST_HEAD(&phba->sli4_hba.sp_fcp_xri_aborted_work_queue); /* Slow-path XRI aborted CQ Event work queue list */ INIT_LIST_HEAD(&phba->sli4_hba.sp_els_xri_aborted_work_queue); /* Receive queue CQ Event work queue list */ INIT_LIST_HEAD(&phba->sli4_hba.sp_unsol_work_queue); /* Initialize extent block lists. */ INIT_LIST_HEAD(&phba->sli4_hba.lpfc_rpi_blk_list); INIT_LIST_HEAD(&phba->sli4_hba.lpfc_xri_blk_list); INIT_LIST_HEAD(&phba->sli4_hba.lpfc_vfi_blk_list); INIT_LIST_HEAD(&phba->lpfc_vpi_blk_list); /* Initialize the driver internal SLI layer lists. */ lpfc_sli_setup(phba); lpfc_sli_queue_setup(phba); /* Allocate device driver memory */ rc = lpfc_mem_alloc(phba, SGL_ALIGN_SZ); if (rc) return -ENOMEM; /* IF Type 2 ports get initialized now. */ if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) == LPFC_SLI_INTF_IF_TYPE_2) { rc = lpfc_pci_function_reset(phba); if (unlikely(rc)) return -ENODEV; } /* Create the bootstrap mailbox command */ rc = lpfc_create_bootstrap_mbox(phba); if (unlikely(rc)) goto out_free_mem; /* Set up the host's endian order with the device. */ rc = lpfc_setup_endian_order(phba); if (unlikely(rc)) goto out_free_bsmbx; /* Set up the hba's configuration parameters. */ rc = lpfc_sli4_read_config(phba); if (unlikely(rc)) goto out_free_bsmbx; /* IF Type 0 ports get initialized now. */ if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) == LPFC_SLI_INTF_IF_TYPE_0) { rc = lpfc_pci_function_reset(phba); if (unlikely(rc)) goto out_free_bsmbx; } mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mboxq) { rc = -ENOMEM; goto out_free_bsmbx; } /* Get the Supported Pages if PORT_CAPABILITIES is supported by port. */ lpfc_supported_pages(mboxq); rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL); if (!rc) { mqe = &mboxq->u.mqe; memcpy(&pn_page[0], ((uint8_t *)&mqe->un.supp_pages.word3), LPFC_MAX_SUPPORTED_PAGES); for (i = 0; i < LPFC_MAX_SUPPORTED_PAGES; i++) { switch (pn_page[i]) { case LPFC_SLI4_PARAMETERS: phba->sli4_hba.pc_sli4_params.supported = 1; break; default: break; } } /* Read the port's SLI4 Parameters capabilities if supported. */ if (phba->sli4_hba.pc_sli4_params.supported) rc = lpfc_pc_sli4_params_get(phba, mboxq); if (rc) { mempool_free(mboxq, phba->mbox_mem_pool); rc = -EIO; goto out_free_bsmbx; } } /* * Get sli4 parameters that override parameters from Port capabilities. * If this call fails, it isn't critical unless the SLI4 parameters come * back in conflict. */ rc = lpfc_get_sli4_parameters(phba, mboxq); if (rc) { if (phba->sli4_hba.extents_in_use && phba->sli4_hba.rpi_hdrs_in_use) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2999 Unsupported SLI4 Parameters " "Extents and RPI headers enabled.\n"); goto out_free_bsmbx; } } mempool_free(mboxq, phba->mbox_mem_pool); /* Verify all the SLI4 queues */ rc = lpfc_sli4_queue_verify(phba); if (rc) goto out_free_bsmbx; /* Create driver internal CQE event pool */ rc = lpfc_sli4_cq_event_pool_create(phba); if (rc) goto out_free_bsmbx; /* Initialize sgl lists per host */ lpfc_init_sgl_list(phba); /* Allocate and initialize active sgl array */ rc = lpfc_init_active_sgl_array(phba); if (rc) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "1430 Failed to initialize sgl list.\n"); goto out_destroy_cq_event_pool; } rc = lpfc_sli4_init_rpi_hdrs(phba); if (rc) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "1432 Failed to initialize rpi headers.\n"); goto out_free_active_sgl; } /* Allocate eligible FCF bmask memory for FCF roundrobin failover */ longs = (LPFC_SLI4_FCF_TBL_INDX_MAX + BITS_PER_LONG - 1)/BITS_PER_LONG; phba->fcf.fcf_rr_bmask = kzalloc(longs * sizeof(unsigned long), GFP_KERNEL); if (!phba->fcf.fcf_rr_bmask) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2759 Failed allocate memory for FCF round " "robin failover bmask\n"); rc = -ENOMEM; goto out_remove_rpi_hdrs; } phba->sli4_hba.fcp_eq_hdl = kzalloc((sizeof(struct lpfc_fcp_eq_hdl) * phba->cfg_fcp_io_channel), GFP_KERNEL); if (!phba->sli4_hba.fcp_eq_hdl) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2572 Failed allocate memory for " "fast-path per-EQ handle array\n"); rc = -ENOMEM; goto out_free_fcf_rr_bmask; } phba->sli4_hba.msix_entries = kzalloc((sizeof(struct msix_entry) * phba->cfg_fcp_io_channel), GFP_KERNEL); if (!phba->sli4_hba.msix_entries) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2573 Failed allocate memory for msi-x " "interrupt vector entries\n"); rc = -ENOMEM; goto out_free_fcp_eq_hdl; } phba->sli4_hba.cpu_map = kzalloc((sizeof(struct lpfc_vector_map_info) * phba->sli4_hba.num_present_cpu), GFP_KERNEL); if (!phba->sli4_hba.cpu_map) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "3327 Failed allocate memory for msi-x " "interrupt vector mapping\n"); rc = -ENOMEM; goto out_free_msix; } /* Initialize io channels for round robin */ cpup = phba->sli4_hba.cpu_map; rc = 0; for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) { cpup->channel_id = rc; rc++; if (rc >= phba->cfg_fcp_io_channel) rc = 0; } /* * Enable sr-iov virtual functions if supported and configured * through the module parameter. */ if (phba->cfg_sriov_nr_virtfn > 0) { rc = lpfc_sli_probe_sriov_nr_virtfn(phba, phba->cfg_sriov_nr_virtfn); if (rc) { lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, "3020 Requested number of SR-IOV " "virtual functions (%d) is not " "supported\n", phba->cfg_sriov_nr_virtfn); phba->cfg_sriov_nr_virtfn = 0; } } return 0; out_free_msix: kfree(phba->sli4_hba.msix_entries); out_free_fcp_eq_hdl: kfree(phba->sli4_hba.fcp_eq_hdl); out_free_fcf_rr_bmask: kfree(phba->fcf.fcf_rr_bmask); out_remove_rpi_hdrs: lpfc_sli4_remove_rpi_hdrs(phba); out_free_active_sgl: lpfc_free_active_sgl(phba); out_destroy_cq_event_pool: lpfc_sli4_cq_event_pool_destroy(phba); out_free_bsmbx: lpfc_destroy_bootstrap_mbox(phba); out_free_mem: lpfc_mem_free(phba); return rc; } /** * lpfc_sli4_driver_resource_unset - Unset drvr internal resources for SLI4 dev * @phba: pointer to lpfc hba data structure. * * This routine is invoked to unset the driver internal resources set up * specific for supporting the SLI-4 HBA device it attached to. **/ static void lpfc_sli4_driver_resource_unset(struct lpfc_hba *phba) { struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry; /* Free memory allocated for msi-x interrupt vector to CPU mapping */ kfree(phba->sli4_hba.cpu_map); phba->sli4_hba.num_present_cpu = 0; phba->sli4_hba.num_online_cpu = 0; /* Free memory allocated for msi-x interrupt vector entries */ kfree(phba->sli4_hba.msix_entries); /* Free memory allocated for fast-path work queue handles */ kfree(phba->sli4_hba.fcp_eq_hdl); /* Free the allocated rpi headers. */ lpfc_sli4_remove_rpi_hdrs(phba); lpfc_sli4_remove_rpis(phba); /* Free eligible FCF index bmask */ kfree(phba->fcf.fcf_rr_bmask); /* Free the ELS sgl list */ lpfc_free_active_sgl(phba); lpfc_free_els_sgl_list(phba); /* Free the completion queue EQ event pool */ lpfc_sli4_cq_event_release_all(phba); lpfc_sli4_cq_event_pool_destroy(phba); /* Release resource identifiers. */ lpfc_sli4_dealloc_resource_identifiers(phba); /* Free the bsmbx region. */ lpfc_destroy_bootstrap_mbox(phba); /* Free the SLI Layer memory with SLI4 HBAs */ lpfc_mem_free_all(phba); /* Free the current connect table */ list_for_each_entry_safe(conn_entry, next_conn_entry, &phba->fcf_conn_rec_list, list) { list_del_init(&conn_entry->list); kfree(conn_entry); } return; } /** * lpfc_init_api_table_setup - Set up init api function jump table * @phba: The hba struct for which this call is being executed. * @dev_grp: The HBA PCI-Device group number. * * This routine sets up the device INIT interface API function jump table * in @phba struct. * * Returns: 0 - success, -ENODEV - failure. **/ int lpfc_init_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp) { phba->lpfc_hba_init_link = lpfc_hba_init_link; phba->lpfc_hba_down_link = lpfc_hba_down_link; phba->lpfc_selective_reset = lpfc_selective_reset; switch (dev_grp) { case LPFC_PCI_DEV_LP: phba->lpfc_hba_down_post = lpfc_hba_down_post_s3; phba->lpfc_handle_eratt = lpfc_handle_eratt_s3; phba->lpfc_stop_port = lpfc_stop_port_s3; break; case LPFC_PCI_DEV_OC: phba->lpfc_hba_down_post = lpfc_hba_down_post_s4; phba->lpfc_handle_eratt = lpfc_handle_eratt_s4; phba->lpfc_stop_port = lpfc_stop_port_s4; break; default: lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "1431 Invalid HBA PCI-device group: 0x%x\n", dev_grp); return -ENODEV; break; } return 0; } /** * lpfc_setup_driver_resource_phase1 - Phase1 etup driver internal resources. * @phba: pointer to lpfc hba data structure. * * This routine is invoked to set up the driver internal resources before the * device specific resource setup to support the HBA device it attached to. * * Return codes * 0 - successful * other values - error **/ static int lpfc_setup_driver_resource_phase1(struct lpfc_hba *phba) { /* * Driver resources common to all SLI revisions */ atomic_set(&phba->fast_event_count, 0); spin_lock_init(&phba->hbalock); /* Initialize ndlp management spinlock */ spin_lock_init(&phba->ndlp_lock); INIT_LIST_HEAD(&phba->port_list); INIT_LIST_HEAD(&phba->work_list); init_waitqueue_head(&phba->wait_4_mlo_m_q); /* Initialize the wait queue head for the kernel thread */ init_waitqueue_head(&phba->work_waitq); /* Initialize the scsi buffer list used by driver for scsi IO */ spin_lock_init(&phba->scsi_buf_list_get_lock); INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list_get); spin_lock_init(&phba->scsi_buf_list_put_lock); INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list_put); /* Initialize the fabric iocb list */ INIT_LIST_HEAD(&phba->fabric_iocb_list); /* Initialize list to save ELS buffers */ INIT_LIST_HEAD(&phba->elsbuf); /* Initialize FCF connection rec list */ INIT_LIST_HEAD(&phba->fcf_conn_rec_list); return 0; } /** * lpfc_setup_driver_resource_phase2 - Phase2 setup driver internal resources. * @phba: pointer to lpfc hba data structure. * * This routine is invoked to set up the driver internal resources after the * device specific resource setup to support the HBA device it attached to. * * Return codes * 0 - successful * other values - error **/ static int lpfc_setup_driver_resource_phase2(struct lpfc_hba *phba) { int error; /* Startup the kernel thread for this host adapter. */ phba->worker_thread = kthread_run(lpfc_do_work, phba, "lpfc_worker_%d", phba->brd_no); if (IS_ERR(phba->worker_thread)) { error = PTR_ERR(phba->worker_thread); return error; } return 0; } /** * lpfc_unset_driver_resource_phase2 - Phase2 unset driver internal resources. * @phba: pointer to lpfc hba data structure. * * This routine is invoked to unset the driver internal resources set up after * the device specific resource setup for supporting the HBA device it * attached to. **/ static void lpfc_unset_driver_resource_phase2(struct lpfc_hba *phba) { /* Stop kernel worker thread */ kthread_stop(phba->worker_thread); } /** * lpfc_free_iocb_list - Free iocb list. * @phba: pointer to lpfc hba data structure. * * This routine is invoked to free the driver's IOCB list and memory. **/ static void lpfc_free_iocb_list(struct lpfc_hba *phba) { struct lpfc_iocbq *iocbq_entry = NULL, *iocbq_next = NULL; spin_lock_irq(&phba->hbalock); list_for_each_entry_safe(iocbq_entry, iocbq_next, &phba->lpfc_iocb_list, list) { list_del(&iocbq_entry->list); kfree(iocbq_entry); phba->total_iocbq_bufs--; } spin_unlock_irq(&phba->hbalock); return; } /** * lpfc_init_iocb_list - Allocate and initialize iocb list. * @phba: pointer to lpfc hba data structure. * * This routine is invoked to allocate and initizlize the driver's IOCB * list and set up the IOCB tag array accordingly. * * Return codes * 0 - successful * other values - error **/ static int lpfc_init_iocb_list(struct lpfc_hba *phba, int iocb_count) { struct lpfc_iocbq *iocbq_entry = NULL; uint16_t iotag; int i; /* Initialize and populate the iocb list per host. */ INIT_LIST_HEAD(&phba->lpfc_iocb_list); for (i = 0; i < iocb_count; i++) { iocbq_entry = kzalloc(sizeof(struct lpfc_iocbq), GFP_KERNEL); if (iocbq_entry == NULL) { printk(KERN_ERR "%s: only allocated %d iocbs of " "expected %d count. Unloading driver.\n", __func__, i, LPFC_IOCB_LIST_CNT); goto out_free_iocbq; } iotag = lpfc_sli_next_iotag(phba, iocbq_entry); if (iotag == 0) { kfree(iocbq_entry); printk(KERN_ERR "%s: failed to allocate IOTAG. " "Unloading driver.\n", __func__); goto out_free_iocbq; } iocbq_entry->sli4_lxritag = NO_XRI; iocbq_entry->sli4_xritag = NO_XRI; spin_lock_irq(&phba->hbalock); list_add(&iocbq_entry->list, &phba->lpfc_iocb_list); phba->total_iocbq_bufs++; spin_unlock_irq(&phba->hbalock); } return 0; out_free_iocbq: lpfc_free_iocb_list(phba); return -ENOMEM; } /** * lpfc_free_sgl_list - Free a given sgl list. * @phba: pointer to lpfc hba data structure. * @sglq_list: pointer to the head of sgl list. * * This routine is invoked to free a give sgl list and memory. **/ void lpfc_free_sgl_list(struct lpfc_hba *phba, struct list_head *sglq_list) { struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL; list_for_each_entry_safe(sglq_entry, sglq_next, sglq_list, list) { list_del(&sglq_entry->list); lpfc_mbuf_free(phba, sglq_entry->virt, sglq_entry->phys); kfree(sglq_entry); } } /** * lpfc_free_els_sgl_list - Free els sgl list. * @phba: pointer to lpfc hba data structure. * * This routine is invoked to free the driver's els sgl list and memory. **/ static void lpfc_free_els_sgl_list(struct lpfc_hba *phba) { LIST_HEAD(sglq_list); /* Retrieve all els sgls from driver list */ spin_lock_irq(&phba->hbalock); list_splice_init(&phba->sli4_hba.lpfc_sgl_list, &sglq_list); spin_unlock_irq(&phba->hbalock); /* Now free the sgl list */ lpfc_free_sgl_list(phba, &sglq_list); } /** * lpfc_init_active_sgl_array - Allocate the buf to track active ELS XRIs. * @phba: pointer to lpfc hba data structure. * * This routine is invoked to allocate the driver's active sgl memory. * This array will hold the sglq_entry's for active IOs. **/ static int lpfc_init_active_sgl_array(struct lpfc_hba *phba) { int size; size = sizeof(struct lpfc_sglq *); size *= phba->sli4_hba.max_cfg_param.max_xri; phba->sli4_hba.lpfc_sglq_active_list = kzalloc(size, GFP_KERNEL); if (!phba->sli4_hba.lpfc_sglq_active_list) return -ENOMEM; return 0; } /** * lpfc_free_active_sgl - Free the buf that tracks active ELS XRIs. * @phba: pointer to lpfc hba data structure. * * This routine is invoked to walk through the array of active sglq entries * and free all of the resources. * This is just a place holder for now. **/ static void lpfc_free_active_sgl(struct lpfc_hba *phba) { kfree(phba->sli4_hba.lpfc_sglq_active_list); } /** * lpfc_init_sgl_list - Allocate and initialize sgl list. * @phba: pointer to lpfc hba data structure. * * This routine is invoked to allocate and initizlize the driver's sgl * list and set up the sgl xritag tag array accordingly. * **/ static void lpfc_init_sgl_list(struct lpfc_hba *phba) { /* Initialize and populate the sglq list per host/VF. */ INIT_LIST_HEAD(&phba->sli4_hba.lpfc_sgl_list); INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_els_sgl_list); /* els xri-sgl book keeping */ phba->sli4_hba.els_xri_cnt = 0; /* scsi xri-buffer book keeping */ phba->sli4_hba.scsi_xri_cnt = 0; } /** * lpfc_sli4_init_rpi_hdrs - Post the rpi header memory region to the port * @phba: pointer to lpfc hba data structure. * * This routine is invoked to post rpi header templates to the * port for those SLI4 ports that do not support extents. This routine * posts a PAGE_SIZE memory region to the port to hold up to * PAGE_SIZE modulo 64 rpi context headers. This is an initialization routine * and should be called only when interrupts are disabled. * * Return codes * 0 - successful * -ERROR - otherwise. **/ int lpfc_sli4_init_rpi_hdrs(struct lpfc_hba *phba) { int rc = 0; struct lpfc_rpi_hdr *rpi_hdr; INIT_LIST_HEAD(&phba->sli4_hba.lpfc_rpi_hdr_list); if (!phba->sli4_hba.rpi_hdrs_in_use) return rc; if (phba->sli4_hba.extents_in_use) return -EIO; rpi_hdr = lpfc_sli4_create_rpi_hdr(phba); if (!rpi_hdr) { lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, "0391 Error during rpi post operation\n"); lpfc_sli4_remove_rpis(phba); rc = -ENODEV; } return rc; } /** * lpfc_sli4_create_rpi_hdr - Allocate an rpi header memory region * @phba: pointer to lpfc hba data structure. * * This routine is invoked to allocate a single 4KB memory region to * support rpis and stores them in the phba. This single region * provides support for up to 64 rpis. The region is used globally * by the device. * * Returns: * A valid rpi hdr on success. * A NULL pointer on any failure. **/ struct lpfc_rpi_hdr * lpfc_sli4_create_rpi_hdr(struct lpfc_hba *phba) { uint16_t rpi_limit, curr_rpi_range; struct lpfc_dmabuf *dmabuf; struct lpfc_rpi_hdr *rpi_hdr; uint32_t rpi_count; /* * If the SLI4 port supports extents, posting the rpi header isn't * required. Set the expected maximum count and let the actual value * get set when extents are fully allocated. */ if (!phba->sli4_hba.rpi_hdrs_in_use) return NULL; if (phba->sli4_hba.extents_in_use) return NULL; /* The limit on the logical index is just the max_rpi count. */ rpi_limit = phba->sli4_hba.max_cfg_param.rpi_base + phba->sli4_hba.max_cfg_param.max_rpi - 1; spin_lock_irq(&phba->hbalock); /* * Establish the starting RPI in this header block. The starting * rpi is normalized to a zero base because the physical rpi is * port based. */ curr_rpi_range = phba->sli4_hba.next_rpi; spin_unlock_irq(&phba->hbalock); /* * The port has a limited number of rpis. The increment here * is LPFC_RPI_HDR_COUNT - 1 to account for the starting value * and to allow the full max_rpi range per port. */ if ((curr_rpi_range + (LPFC_RPI_HDR_COUNT - 1)) > rpi_limit) rpi_count = rpi_limit - curr_rpi_range; else rpi_count = LPFC_RPI_HDR_COUNT; if (!rpi_count) return NULL; /* * First allocate the protocol header region for the port. The * port expects a 4KB DMA-mapped memory region that is 4K aligned. */ dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); if (!dmabuf) return NULL; dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev, LPFC_HDR_TEMPLATE_SIZE, &dmabuf->phys, GFP_KERNEL); if (!dmabuf->virt) { rpi_hdr = NULL; goto err_free_dmabuf; } memset(dmabuf->virt, 0, LPFC_HDR_TEMPLATE_SIZE); if (!IS_ALIGNED(dmabuf->phys, LPFC_HDR_TEMPLATE_SIZE)) { rpi_hdr = NULL; goto err_free_coherent; } /* Save the rpi header data for cleanup later. */ rpi_hdr = kzalloc(sizeof(struct lpfc_rpi_hdr), GFP_KERNEL); if (!rpi_hdr) goto err_free_coherent; rpi_hdr->dmabuf = dmabuf; rpi_hdr->len = LPFC_HDR_TEMPLATE_SIZE; rpi_hdr->page_count = 1; spin_lock_irq(&phba->hbalock); /* The rpi_hdr stores the logical index only. */ rpi_hdr->start_rpi = curr_rpi_range; list_add_tail(&rpi_hdr->list, &phba->sli4_hba.lpfc_rpi_hdr_list); /* * The next_rpi stores the next logical module-64 rpi value used * to post physical rpis in subsequent rpi postings. */ phba->sli4_hba.next_rpi += rpi_count; spin_unlock_irq(&phba->hbalock); return rpi_hdr; err_free_coherent: dma_free_coherent(&phba->pcidev->dev, LPFC_HDR_TEMPLATE_SIZE, dmabuf->virt, dmabuf->phys); err_free_dmabuf: kfree(dmabuf); return NULL; } /** * lpfc_sli4_remove_rpi_hdrs - Remove all rpi header memory regions * @phba: pointer to lpfc hba data structure. * * This routine is invoked to remove all memory resources allocated * to support rpis for SLI4 ports not supporting extents. This routine * presumes the caller has released all rpis consumed by fabric or port * logins and is prepared to have the header pages removed. **/ void lpfc_sli4_remove_rpi_hdrs(struct lpfc_hba *phba) { struct lpfc_rpi_hdr *rpi_hdr, *next_rpi_hdr; if (!phba->sli4_hba.rpi_hdrs_in_use) goto exit; list_for_each_entry_safe(rpi_hdr, next_rpi_hdr, &phba->sli4_hba.lpfc_rpi_hdr_list, list) { list_del(&rpi_hdr->list); dma_free_coherent(&phba->pcidev->dev, rpi_hdr->len, rpi_hdr->dmabuf->virt, rpi_hdr->dmabuf->phys); kfree(rpi_hdr->dmabuf); kfree(rpi_hdr); } exit: /* There are no rpis available to the port now. */ phba->sli4_hba.next_rpi = 0; } /** * lpfc_hba_alloc - Allocate driver hba data structure for a device. * @pdev: pointer to pci device data structure. * * This routine is invoked to allocate the driver hba data structure for an * HBA device. If the allocation is successful, the phba reference to the * PCI device data structure is set. * * Return codes * pointer to @phba - successful * NULL - error **/ static struct lpfc_hba * lpfc_hba_alloc(struct pci_dev *pdev) { struct lpfc_hba *phba; /* Allocate memory for HBA structure */ phba = kzalloc(sizeof(struct lpfc_hba), GFP_KERNEL); if (!phba) { dev_err(&pdev->dev, "failed to allocate hba struct\n"); return NULL; } /* Set reference to PCI device in HBA structure */ phba->pcidev = pdev; /* Assign an unused board number */ phba->brd_no = lpfc_get_instance(); if (phba->brd_no < 0) { kfree(phba); return NULL; } spin_lock_init(&phba->ct_ev_lock); INIT_LIST_HEAD(&phba->ct_ev_waiters); return phba; } /** * lpfc_hba_free - Free driver hba data structure with a device. * @phba: pointer to lpfc hba data structure. * * This routine is invoked to free the driver hba data structure with an * HBA device. **/ static void lpfc_hba_free(struct lpfc_hba *phba) { /* Release the driver assigned board number */ idr_remove(&lpfc_hba_index, phba->brd_no); /* Free memory allocated with sli rings */ kfree(phba->sli.ring); phba->sli.ring = NULL; kfree(phba); return; } /** * lpfc_create_shost - Create hba physical port with associated scsi host. * @phba: pointer to lpfc hba data structure. * * This routine is invoked to create HBA physical port and associate a SCSI * host with it. * * Return codes * 0 - successful * other values - error **/ static int lpfc_create_shost(struct lpfc_hba *phba) { struct lpfc_vport *vport; struct Scsi_Host *shost; /* Initialize HBA FC structure */ phba->fc_edtov = FF_DEF_EDTOV; phba->fc_ratov = FF_DEF_RATOV; phba->fc_altov = FF_DEF_ALTOV; phba->fc_arbtov = FF_DEF_ARBTOV; atomic_set(&phba->sdev_cnt, 0); vport = lpfc_create_port(phba, phba->brd_no, &phba->pcidev->dev); if (!vport) return -ENODEV; shost = lpfc_shost_from_vport(vport); phba->pport = vport; lpfc_debugfs_initialize(vport); /* Put reference to SCSI host to driver's device private data */ pci_set_drvdata(phba->pcidev, shost); return 0; } /** * lpfc_destroy_shost - Destroy hba physical port with associated scsi host. * @phba: pointer to lpfc hba data structure. * * This routine is invoked to destroy HBA physical port and the associated * SCSI host. **/ static void lpfc_destroy_shost(struct lpfc_hba *phba) { struct lpfc_vport *vport = phba->pport; /* Destroy physical port that associated with the SCSI host */ destroy_port(vport); return; } /** * lpfc_setup_bg - Setup Block guard structures and debug areas. * @phba: pointer to lpfc hba data structure. * @shost: the shost to be used to detect Block guard settings. * * This routine sets up the local Block guard protocol settings for @shost. * This routine also allocates memory for debugging bg buffers. **/ static void lpfc_setup_bg(struct lpfc_hba *phba, struct Scsi_Host *shost) { uint32_t old_mask; uint32_t old_guard; int pagecnt = 10; if (lpfc_prot_mask && lpfc_prot_guard) { lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "1478 Registering BlockGuard with the " "SCSI layer\n"); old_mask = lpfc_prot_mask; old_guard = lpfc_prot_guard; /* Only allow supported values */ lpfc_prot_mask &= (SHOST_DIF_TYPE1_PROTECTION | SHOST_DIX_TYPE0_PROTECTION | SHOST_DIX_TYPE1_PROTECTION); lpfc_prot_guard &= (SHOST_DIX_GUARD_IP | SHOST_DIX_GUARD_CRC); /* DIF Type 1 protection for profiles AST1/C1 is end to end */ if (lpfc_prot_mask == SHOST_DIX_TYPE1_PROTECTION) lpfc_prot_mask |= SHOST_DIF_TYPE1_PROTECTION; if (lpfc_prot_mask && lpfc_prot_guard) { if ((old_mask != lpfc_prot_mask) || (old_guard != lpfc_prot_guard)) lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "1475 Registering BlockGuard with the " "SCSI layer: mask %d guard %d\n", lpfc_prot_mask, lpfc_prot_guard); scsi_host_set_prot(shost, lpfc_prot_mask); scsi_host_set_guard(shost, lpfc_prot_guard); } else lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "1479 Not Registering BlockGuard with the SCSI " "layer, Bad protection parameters: %d %d\n", old_mask, old_guard); } if (!_dump_buf_data) { while (pagecnt) { spin_lock_init(&_dump_buf_lock); _dump_buf_data = (char *) __get_free_pages(GFP_KERNEL, pagecnt); if (_dump_buf_data) { lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9043 BLKGRD: allocated %d pages for " "_dump_buf_data at 0x%p\n", (1 << pagecnt), _dump_buf_data); _dump_buf_data_order = pagecnt; memset(_dump_buf_data, 0, ((1 << PAGE_SHIFT) << pagecnt)); break; } else --pagecnt; } if (!_dump_buf_data_order) lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9044 BLKGRD: ERROR unable to allocate " "memory for hexdump\n"); } else lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9045 BLKGRD: already allocated _dump_buf_data=0x%p" "\n", _dump_buf_data); if (!_dump_buf_dif) { while (pagecnt) { _dump_buf_dif = (char *) __get_free_pages(GFP_KERNEL, pagecnt); if (_dump_buf_dif) { lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9046 BLKGRD: allocated %d pages for " "_dump_buf_dif at 0x%p\n", (1 << pagecnt), _dump_buf_dif); _dump_buf_dif_order = pagecnt; memset(_dump_buf_dif, 0, ((1 << PAGE_SHIFT) << pagecnt)); break; } else --pagecnt; } if (!_dump_buf_dif_order) lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9047 BLKGRD: ERROR unable to allocate " "memory for hexdump\n"); } else lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9048 BLKGRD: already allocated _dump_buf_dif=0x%p\n", _dump_buf_dif); } /** * lpfc_post_init_setup - Perform necessary device post initialization setup. * @phba: pointer to lpfc hba data structure. * * This routine is invoked to perform all the necessary post initialization * setup for the device. **/ static void lpfc_post_init_setup(struct lpfc_hba *phba) { struct Scsi_Host *shost; struct lpfc_adapter_event_header adapter_event; /* Get the default values for Model Name and Description */ lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc); /* * hba setup may have changed the hba_queue_depth so we need to * adjust the value of can_queue. */ shost = pci_get_drvdata(phba->pcidev); shost->can_queue = phba->cfg_hba_queue_depth - 10; if (phba->sli3_options & LPFC_SLI3_BG_ENABLED) lpfc_setup_bg(phba, shost); lpfc_host_attrib_init(shost); if (phba->cfg_poll & DISABLE_FCP_RING_INT) { spin_lock_irq(shost->host_lock); lpfc_poll_start_timer(phba); spin_unlock_irq(shost->host_lock); } lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "0428 Perform SCSI scan\n"); /* Send board arrival event to upper layer */ adapter_event.event_type = FC_REG_ADAPTER_EVENT; adapter_event.subcategory = LPFC_EVENT_ARRIVAL; fc_host_post_vendor_event(shost, fc_get_event_number(), sizeof(adapter_event), (char *) &adapter_event, LPFC_NL_VENDOR_ID); return; } /** * lpfc_sli_pci_mem_setup - Setup SLI3 HBA PCI memory space. * @phba: pointer to lpfc hba data structure. * * This routine is invoked to set up the PCI device memory space for device * with SLI-3 interface spec. * * Return codes * 0 - successful * other values - error **/ static int lpfc_sli_pci_mem_setup(struct lpfc_hba *phba) { struct pci_dev *pdev; unsigned long bar0map_len, bar2map_len; int i, hbq_count; void *ptr; int error = -ENODEV; /* Obtain PCI device reference */ if (!phba->pcidev) return error; else pdev = phba->pcidev; /* Set the device DMA mask size */ if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0 || pci_set_consistent_dma_mask(pdev,DMA_BIT_MASK(64)) != 0) { if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0 || pci_set_consistent_dma_mask(pdev,DMA_BIT_MASK(32)) != 0) { return error; } } /* Get the bus address of Bar0 and Bar2 and the number of bytes * required by each mapping. */ phba->pci_bar0_map = pci_resource_start(pdev, 0); bar0map_len = pci_resource_len(pdev, 0); phba->pci_bar2_map = pci_resource_start(pdev, 2); bar2map_len = pci_resource_len(pdev, 2); /* Map HBA SLIM to a kernel virtual address. */ phba->slim_memmap_p = ioremap(phba->pci_bar0_map, bar0map_len); if (!phba->slim_memmap_p) { dev_printk(KERN_ERR, &pdev->dev, "ioremap failed for SLIM memory.\n"); goto out; } /* Map HBA Control Registers to a kernel virtual address. */ phba->ctrl_regs_memmap_p = ioremap(phba->pci_bar2_map, bar2map_len); if (!phba->ctrl_regs_memmap_p) { dev_printk(KERN_ERR, &pdev->dev, "ioremap failed for HBA control registers.\n"); goto out_iounmap_slim; } /* Allocate memory for SLI-2 structures */ phba->slim2p.virt = dma_alloc_coherent(&pdev->dev, SLI2_SLIM_SIZE, &phba->slim2p.phys, GFP_KERNEL); if (!phba->slim2p.virt) goto out_iounmap; memset(phba->slim2p.virt, 0, SLI2_SLIM_SIZE); phba->mbox = phba->slim2p.virt + offsetof(struct lpfc_sli2_slim, mbx); phba->mbox_ext = (phba->slim2p.virt + offsetof(struct lpfc_sli2_slim, mbx_ext_words)); phba->pcb = (phba->slim2p.virt + offsetof(struct lpfc_sli2_slim, pcb)); phba->IOCBs = (phba->slim2p.virt + offsetof(struct lpfc_sli2_slim, IOCBs)); phba->hbqslimp.virt = dma_alloc_coherent(&pdev->dev, lpfc_sli_hbq_size(), &phba->hbqslimp.phys, GFP_KERNEL); if (!phba->hbqslimp.virt) goto out_free_slim; hbq_count = lpfc_sli_hbq_count(); ptr = phba->hbqslimp.virt; for (i = 0; i < hbq_count; ++i) { phba->hbqs[i].hbq_virt = ptr; INIT_LIST_HEAD(&phba->hbqs[i].hbq_buffer_list); ptr += (lpfc_hbq_defs[i]->entry_count * sizeof(struct lpfc_hbq_entry)); } phba->hbqs[LPFC_ELS_HBQ].hbq_alloc_buffer = lpfc_els_hbq_alloc; phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer = lpfc_els_hbq_free; memset(phba->hbqslimp.virt, 0, lpfc_sli_hbq_size()); INIT_LIST_HEAD(&phba->rb_pend_list); phba->MBslimaddr = phba->slim_memmap_p; phba->HAregaddr = phba->ctrl_regs_memmap_p + HA_REG_OFFSET; phba->CAregaddr = phba->ctrl_regs_memmap_p + CA_REG_OFFSET; phba->HSregaddr = phba->ctrl_regs_memmap_p + HS_REG_OFFSET; phba->HCregaddr = phba->ctrl_regs_memmap_p + HC_REG_OFFSET; return 0; out_free_slim: dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE, phba->slim2p.virt, phba->slim2p.phys); out_iounmap: iounmap(phba->ctrl_regs_memmap_p); out_iounmap_slim: iounmap(phba->slim_memmap_p); out: return error; } /** * lpfc_sli_pci_mem_unset - Unset SLI3 HBA PCI memory space. * @phba: pointer to lpfc hba data structure. * * This routine is invoked to unset the PCI device memory space for device * with SLI-3 interface spec. **/ static void lpfc_sli_pci_mem_unset(struct lpfc_hba *phba) { struct pci_dev *pdev; /* Obtain PCI device reference */ if (!phba->pcidev) return; else pdev = phba->pcidev; /* Free coherent DMA memory allocated */ dma_free_coherent(&pdev->dev, lpfc_sli_hbq_size(), phba->hbqslimp.virt, phba->hbqslimp.phys); dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE, phba->slim2p.virt, phba->slim2p.phys); /* I/O memory unmap */ iounmap(phba->ctrl_regs_memmap_p); iounmap(phba->slim_memmap_p); return; } /** * lpfc_sli4_post_status_check - Wait for SLI4 POST done and check status * @phba: pointer to lpfc hba data structure. * * This routine is invoked to wait for SLI4 device Power On Self Test (POST) * done and check status. * * Return 0 if successful, otherwise -ENODEV. **/ int lpfc_sli4_post_status_check(struct lpfc_hba *phba) { struct lpfc_register portsmphr_reg, uerrlo_reg, uerrhi_reg; struct lpfc_register reg_data; int i, port_error = 0; uint32_t if_type; memset(&portsmphr_reg, 0, sizeof(portsmphr_reg)); memset(®_data, 0, sizeof(reg_data)); if (!phba->sli4_hba.PSMPHRregaddr) return -ENODEV; /* Wait up to 30 seconds for the SLI Port POST done and ready */ for (i = 0; i < 3000; i++) { if (lpfc_readl(phba->sli4_hba.PSMPHRregaddr, &portsmphr_reg.word0) || (bf_get(lpfc_port_smphr_perr, &portsmphr_reg))) { /* Port has a fatal POST error, break out */ port_error = -ENODEV; break; } if (LPFC_POST_STAGE_PORT_READY == bf_get(lpfc_port_smphr_port_status, &portsmphr_reg)) break; msleep(10); } /* * If there was a port error during POST, then don't proceed with * other register reads as the data may not be valid. Just exit. */ if (port_error) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "1408 Port Failed POST - portsmphr=0x%x, " "perr=x%x, sfi=x%x, nip=x%x, ipc=x%x, scr1=x%x, " "scr2=x%x, hscratch=x%x, pstatus=x%x\n", portsmphr_reg.word0, bf_get(lpfc_port_smphr_perr, &portsmphr_reg), bf_get(lpfc_port_smphr_sfi, &portsmphr_reg), bf_get(lpfc_port_smphr_nip, &portsmphr_reg), bf_get(lpfc_port_smphr_ipc, &portsmphr_reg), bf_get(lpfc_port_smphr_scr1, &portsmphr_reg), bf_get(lpfc_port_smphr_scr2, &portsmphr_reg), bf_get(lpfc_port_smphr_host_scratch, &portsmphr_reg), bf_get(lpfc_port_smphr_port_status, &portsmphr_reg)); } else { lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "2534 Device Info: SLIFamily=0x%x, " "SLIRev=0x%x, IFType=0x%x, SLIHint_1=0x%x, " "SLIHint_2=0x%x, FT=0x%x\n", bf_get(lpfc_sli_intf_sli_family, &phba->sli4_hba.sli_intf), bf_get(lpfc_sli_intf_slirev, &phba->sli4_hba.sli_intf), bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf), bf_get(lpfc_sli_intf_sli_hint1, &phba->sli4_hba.sli_intf), bf_get(lpfc_sli_intf_sli_hint2, &phba->sli4_hba.sli_intf), bf_get(lpfc_sli_intf_func_type, &phba->sli4_hba.sli_intf)); /* * Check for other Port errors during the initialization * process. Fail the load if the port did not come up * correctly. */ if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf); switch (if_type) { case LPFC_SLI_INTF_IF_TYPE_0: phba->sli4_hba.ue_mask_lo = readl(phba->sli4_hba.u.if_type0.UEMASKLOregaddr); phba->sli4_hba.ue_mask_hi = readl(phba->sli4_hba.u.if_type0.UEMASKHIregaddr); uerrlo_reg.word0 = readl(phba->sli4_hba.u.if_type0.UERRLOregaddr); uerrhi_reg.word0 = readl(phba->sli4_hba.u.if_type0.UERRHIregaddr); if ((~phba->sli4_hba.ue_mask_lo & uerrlo_reg.word0) || (~phba->sli4_hba.ue_mask_hi & uerrhi_reg.word0)) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "1422 Unrecoverable Error " "Detected during POST " "uerr_lo_reg=0x%x, " "uerr_hi_reg=0x%x, " "ue_mask_lo_reg=0x%x, " "ue_mask_hi_reg=0x%x\n", uerrlo_reg.word0, uerrhi_reg.word0, phba->sli4_hba.ue_mask_lo, phba->sli4_hba.ue_mask_hi); port_error = -ENODEV; } break; case LPFC_SLI_INTF_IF_TYPE_2: /* Final checks. The port status should be clean. */ if (lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr, ®_data.word0) || (bf_get(lpfc_sliport_status_err, ®_data) && !bf_get(lpfc_sliport_status_rn, ®_data))) { phba->work_status[0] = readl(phba->sli4_hba.u.if_type2. ERR1regaddr); phba->work_status[1] = readl(phba->sli4_hba.u.if_type2. ERR2regaddr); lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2888 Unrecoverable port error " "following POST: port status reg " "0x%x, port_smphr reg 0x%x, " "error 1=0x%x, error 2=0x%x\n", reg_data.word0, portsmphr_reg.word0, phba->work_status[0], phba->work_status[1]); port_error = -ENODEV; } break; case LPFC_SLI_INTF_IF_TYPE_1: default: break; } } return port_error; } /** * lpfc_sli4_bar0_register_memmap - Set up SLI4 BAR0 register memory map. * @phba: pointer to lpfc hba data structure. * @if_type: The SLI4 interface type getting configured. * * This routine is invoked to set up SLI4 BAR0 PCI config space register * memory map. **/ static void lpfc_sli4_bar0_register_memmap(struct lpfc_hba *phba, uint32_t if_type) { switch (if_type) { case LPFC_SLI_INTF_IF_TYPE_0: phba->sli4_hba.u.if_type0.UERRLOregaddr = phba->sli4_hba.conf_regs_memmap_p + LPFC_UERR_STATUS_LO; phba->sli4_hba.u.if_type0.UERRHIregaddr = phba->sli4_hba.conf_regs_memmap_p + LPFC_UERR_STATUS_HI; phba->sli4_hba.u.if_type0.UEMASKLOregaddr = phba->sli4_hba.conf_regs_memmap_p + LPFC_UE_MASK_LO; phba->sli4_hba.u.if_type0.UEMASKHIregaddr = phba->sli4_hba.conf_regs_memmap_p + LPFC_UE_MASK_HI; phba->sli4_hba.SLIINTFregaddr = phba->sli4_hba.conf_regs_memmap_p + LPFC_SLI_INTF; break; case LPFC_SLI_INTF_IF_TYPE_2: phba->sli4_hba.u.if_type2.ERR1regaddr = phba->sli4_hba.conf_regs_memmap_p + LPFC_CTL_PORT_ER1_OFFSET; phba->sli4_hba.u.if_type2.ERR2regaddr = phba->sli4_hba.conf_regs_memmap_p + LPFC_CTL_PORT_ER2_OFFSET; phba->sli4_hba.u.if_type2.CTRLregaddr = phba->sli4_hba.conf_regs_memmap_p + LPFC_CTL_PORT_CTL_OFFSET; phba->sli4_hba.u.if_type2.STATUSregaddr = phba->sli4_hba.conf_regs_memmap_p + LPFC_CTL_PORT_STA_OFFSET; phba->sli4_hba.SLIINTFregaddr = phba->sli4_hba.conf_regs_memmap_p + LPFC_SLI_INTF; phba->sli4_hba.PSMPHRregaddr = phba->sli4_hba.conf_regs_memmap_p + LPFC_CTL_PORT_SEM_OFFSET; phba->sli4_hba.RQDBregaddr = phba->sli4_hba.conf_regs_memmap_p + LPFC_ULP0_RQ_DOORBELL; phba->sli4_hba.WQDBregaddr = phba->sli4_hba.conf_regs_memmap_p + LPFC_ULP0_WQ_DOORBELL; phba->sli4_hba.EQCQDBregaddr = phba->sli4_hba.conf_regs_memmap_p + LPFC_EQCQ_DOORBELL; phba->sli4_hba.MQDBregaddr = phba->sli4_hba.conf_regs_memmap_p + LPFC_MQ_DOORBELL; phba->sli4_hba.BMBXregaddr = phba->sli4_hba.conf_regs_memmap_p + LPFC_BMBX; break; case LPFC_SLI_INTF_IF_TYPE_1: default: dev_printk(KERN_ERR, &phba->pcidev->dev, "FATAL - unsupported SLI4 interface type - %d\n", if_type); break; } } /** * lpfc_sli4_bar1_register_memmap - Set up SLI4 BAR1 register memory map. * @phba: pointer to lpfc hba data structure. * * This routine is invoked to set up SLI4 BAR1 control status register (CSR) * memory map. **/ static void lpfc_sli4_bar1_register_memmap(struct lpfc_hba *phba) { phba->sli4_hba.PSMPHRregaddr = phba->sli4_hba.ctrl_regs_memmap_p + LPFC_SLIPORT_IF0_SMPHR; phba->sli4_hba.ISRregaddr = phba->sli4_hba.ctrl_regs_memmap_p + LPFC_HST_ISR0; phba->sli4_hba.IMRregaddr = phba->sli4_hba.ctrl_regs_memmap_p + LPFC_HST_IMR0; phba->sli4_hba.ISCRregaddr = phba->sli4_hba.ctrl_regs_memmap_p + LPFC_HST_ISCR0; } /** * lpfc_sli4_bar2_register_memmap - Set up SLI4 BAR2 register memory map. * @phba: pointer to lpfc hba data structure. * @vf: virtual function number * * This routine is invoked to set up SLI4 BAR2 doorbell register memory map * based on the given viftual function number, @vf. * * Return 0 if successful, otherwise -ENODEV. **/ static int lpfc_sli4_bar2_register_memmap(struct lpfc_hba *phba, uint32_t vf) { if (vf > LPFC_VIR_FUNC_MAX) return -ENODEV; phba->sli4_hba.RQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p + vf * LPFC_VFR_PAGE_SIZE + LPFC_ULP0_RQ_DOORBELL); phba->sli4_hba.WQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p + vf * LPFC_VFR_PAGE_SIZE + LPFC_ULP0_WQ_DOORBELL); phba->sli4_hba.EQCQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p + vf * LPFC_VFR_PAGE_SIZE + LPFC_EQCQ_DOORBELL); phba->sli4_hba.MQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p + vf * LPFC_VFR_PAGE_SIZE + LPFC_MQ_DOORBELL); phba->sli4_hba.BMBXregaddr = (phba->sli4_hba.drbl_regs_memmap_p + vf * LPFC_VFR_PAGE_SIZE + LPFC_BMBX); return 0; } /** * lpfc_create_bootstrap_mbox - Create the bootstrap mailbox * @phba: pointer to lpfc hba data structure. * * This routine is invoked to create the bootstrap mailbox * region consistent with the SLI-4 interface spec. This * routine allocates all memory necessary to communicate * mailbox commands to the port and sets up all alignment * needs. No locks are expected to be held when calling * this routine. * * Return codes * 0 - successful * -ENOMEM - could not allocated memory. **/ static int lpfc_create_bootstrap_mbox(struct lpfc_hba *phba) { uint32_t bmbx_size; struct lpfc_dmabuf *dmabuf; struct dma_address *dma_address; uint32_t pa_addr; uint64_t phys_addr; dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); if (!dmabuf) return -ENOMEM; /* * The bootstrap mailbox region is comprised of 2 parts * plus an alignment restriction of 16 bytes. */ bmbx_size = sizeof(struct lpfc_bmbx_create) + (LPFC_ALIGN_16_BYTE - 1); dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev, bmbx_size, &dmabuf->phys, GFP_KERNEL); if (!dmabuf->virt) { kfree(dmabuf); return -ENOMEM; } memset(dmabuf->virt, 0, bmbx_size); /* * Initialize the bootstrap mailbox pointers now so that the register * operations are simple later. The mailbox dma address is required * to be 16-byte aligned. Also align the virtual memory as each * maibox is copied into the bmbx mailbox region before issuing the * command to the port. */ phba->sli4_hba.bmbx.dmabuf = dmabuf; phba->sli4_hba.bmbx.bmbx_size = bmbx_size; phba->sli4_hba.bmbx.avirt = PTR_ALIGN(dmabuf->virt, LPFC_ALIGN_16_BYTE); phba->sli4_hba.bmbx.aphys = ALIGN(dmabuf->phys, LPFC_ALIGN_16_BYTE); /* * Set the high and low physical addresses now. The SLI4 alignment * requirement is 16 bytes and the mailbox is posted to the port * as two 30-bit addresses. The other data is a bit marking whether * the 30-bit address is the high or low address. * Upcast bmbx aphys to 64bits so shift instruction compiles * clean on 32 bit machines. */ dma_address = &phba->sli4_hba.bmbx.dma_address; phys_addr = (uint64_t)phba->sli4_hba.bmbx.aphys; pa_addr = (uint32_t) ((phys_addr >> 34) & 0x3fffffff); dma_address->addr_hi = (uint32_t) ((pa_addr << 2) | LPFC_BMBX_BIT1_ADDR_HI); pa_addr = (uint32_t) ((phba->sli4_hba.bmbx.aphys >> 4) & 0x3fffffff); dma_address->addr_lo = (uint32_t) ((pa_addr << 2) | LPFC_BMBX_BIT1_ADDR_LO); return 0; } /** * lpfc_destroy_bootstrap_mbox - Destroy all bootstrap mailbox resources * @phba: pointer to lpfc hba data structure. * * This routine is invoked to teardown the bootstrap mailbox * region and release all host resources. This routine requires * the caller to ensure all mailbox commands recovered, no * additional mailbox comands are sent, and interrupts are disabled * before calling this routine. * **/ static void lpfc_destroy_bootstrap_mbox(struct lpfc_hba *phba) { dma_free_coherent(&phba->pcidev->dev, phba->sli4_hba.bmbx.bmbx_size, phba->sli4_hba.bmbx.dmabuf->virt, phba->sli4_hba.bmbx.dmabuf->phys); kfree(phba->sli4_hba.bmbx.dmabuf); memset(&phba->sli4_hba.bmbx, 0, sizeof(struct lpfc_bmbx)); } /** * lpfc_sli4_read_config - Get the config parameters. * @phba: pointer to lpfc hba data structure. * * This routine is invoked to read the configuration parameters from the HBA. * The configuration parameters are used to set the base and maximum values * for RPI's XRI's VPI's VFI's and FCFIs. These values also affect the resource * allocation for the port. * * Return codes * 0 - successful * -ENOMEM - No available memory * -EIO - The mailbox failed to complete successfully. **/ int lpfc_sli4_read_config(struct lpfc_hba *phba) { LPFC_MBOXQ_t *pmb; struct lpfc_mbx_read_config *rd_config; union lpfc_sli4_cfg_shdr *shdr; uint32_t shdr_status, shdr_add_status; struct lpfc_mbx_get_func_cfg *get_func_cfg; struct lpfc_rsrc_desc_fcfcoe *desc; char *pdesc_0; uint32_t desc_count; int length, i, rc = 0, rc2; pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!pmb) { lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "2011 Unable to allocate memory for issuing " "SLI_CONFIG_SPECIAL mailbox command\n"); return -ENOMEM; } lpfc_read_config(phba, pmb); rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL); if (rc != MBX_SUCCESS) { lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "2012 Mailbox failed , mbxCmd x%x " "READ_CONFIG, mbxStatus x%x\n", bf_get(lpfc_mqe_command, &pmb->u.mqe), bf_get(lpfc_mqe_status, &pmb->u.mqe)); rc = -EIO; } else { rd_config = &pmb->u.mqe.un.rd_config; if (bf_get(lpfc_mbx_rd_conf_lnk_ldv, rd_config)) { phba->sli4_hba.lnk_info.lnk_dv = LPFC_LNK_DAT_VAL; phba->sli4_hba.lnk_info.lnk_tp = bf_get(lpfc_mbx_rd_conf_lnk_type, rd_config); phba->sli4_hba.lnk_info.lnk_no = bf_get(lpfc_mbx_rd_conf_lnk_numb, rd_config); lpfc_printf_log(phba, KERN_INFO, LOG_SLI, "3081 lnk_type:%d, lnk_numb:%d\n", phba->sli4_hba.lnk_info.lnk_tp, phba->sli4_hba.lnk_info.lnk_no); } else lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, "3082 Mailbox (x%x) returned ldv:x0\n", bf_get(lpfc_mqe_command, &pmb->u.mqe)); phba->sli4_hba.extents_in_use = bf_get(lpfc_mbx_rd_conf_extnts_inuse, rd_config); phba->sli4_hba.max_cfg_param.max_xri = bf_get(lpfc_mbx_rd_conf_xri_count, rd_config); phba->sli4_hba.max_cfg_param.xri_base = bf_get(lpfc_mbx_rd_conf_xri_base, rd_config); phba->sli4_hba.max_cfg_param.max_vpi = bf_get(lpfc_mbx_rd_conf_vpi_count, rd_config); phba->sli4_hba.max_cfg_param.vpi_base = bf_get(lpfc_mbx_rd_conf_vpi_base, rd_config); phba->sli4_hba.max_cfg_param.max_rpi = bf_get(lpfc_mbx_rd_conf_rpi_count, rd_config); phba->sli4_hba.max_cfg_param.rpi_base = bf_get(lpfc_mbx_rd_conf_rpi_base, rd_config); phba->sli4_hba.max_cfg_param.max_vfi = bf_get(lpfc_mbx_rd_conf_vfi_count, rd_config); phba->sli4_hba.max_cfg_param.vfi_base = bf_get(lpfc_mbx_rd_conf_vfi_base, rd_config); phba->sli4_hba.max_cfg_param.max_fcfi = bf_get(lpfc_mbx_rd_conf_fcfi_count, rd_config); phba->sli4_hba.max_cfg_param.max_eq = bf_get(lpfc_mbx_rd_conf_eq_count, rd_config); phba->sli4_hba.max_cfg_param.max_rq = bf_get(lpfc_mbx_rd_conf_rq_count, rd_config); phba->sli4_hba.max_cfg_param.max_wq = bf_get(lpfc_mbx_rd_conf_wq_count, rd_config); phba->sli4_hba.max_cfg_param.max_cq = bf_get(lpfc_mbx_rd_conf_cq_count, rd_config); phba->lmt = bf_get(lpfc_mbx_rd_conf_lmt, rd_config); phba->sli4_hba.next_xri = phba->sli4_hba.max_cfg_param.xri_base; phba->vpi_base = phba->sli4_hba.max_cfg_param.vpi_base; phba->vfi_base = phba->sli4_hba.max_cfg_param.vfi_base; phba->max_vpi = (phba->sli4_hba.max_cfg_param.max_vpi > 0) ? (phba->sli4_hba.max_cfg_param.max_vpi - 1) : 0; phba->max_vports = phba->max_vpi; lpfc_printf_log(phba, KERN_INFO, LOG_SLI, "2003 cfg params Extents? %d " "XRI(B:%d M:%d), " "VPI(B:%d M:%d) " "VFI(B:%d M:%d) " "RPI(B:%d M:%d) " "FCFI(Count:%d)\n", phba->sli4_hba.extents_in_use, phba->sli4_hba.max_cfg_param.xri_base, phba->sli4_hba.max_cfg_param.max_xri, phba->sli4_hba.max_cfg_param.vpi_base, phba->sli4_hba.max_cfg_param.max_vpi, phba->sli4_hba.max_cfg_param.vfi_base, phba->sli4_hba.max_cfg_param.max_vfi, phba->sli4_hba.max_cfg_param.rpi_base, phba->sli4_hba.max_cfg_param.max_rpi, phba->sli4_hba.max_cfg_param.max_fcfi); } if (rc) goto read_cfg_out; /* Reset the DFT_HBA_Q_DEPTH to the max xri */ if (phba->cfg_hba_queue_depth > (phba->sli4_hba.max_cfg_param.max_xri - lpfc_sli4_get_els_iocb_cnt(phba))) phba->cfg_hba_queue_depth = phba->sli4_hba.max_cfg_param.max_xri - lpfc_sli4_get_els_iocb_cnt(phba); if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) != LPFC_SLI_INTF_IF_TYPE_2) goto read_cfg_out; /* get the pf# and vf# for SLI4 if_type 2 port */ length = (sizeof(struct lpfc_mbx_get_func_cfg) - sizeof(struct lpfc_sli4_cfg_mhdr)); lpfc_sli4_config(phba, pmb, LPFC_MBOX_SUBSYSTEM_COMMON, LPFC_MBOX_OPCODE_GET_FUNCTION_CONFIG, length, LPFC_SLI4_MBX_EMBED); rc2 = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL); shdr = (union lpfc_sli4_cfg_shdr *) &pmb->u.mqe.un.sli4_config.header.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 (rc2 || shdr_status || shdr_add_status) { lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "3026 Mailbox failed , mbxCmd x%x " "GET_FUNCTION_CONFIG, mbxStatus x%x\n", bf_get(lpfc_mqe_command, &pmb->u.mqe), bf_get(lpfc_mqe_status, &pmb->u.mqe)); goto read_cfg_out; } /* search for fc_fcoe resrouce descriptor */ get_func_cfg = &pmb->u.mqe.un.get_func_cfg; desc_count = get_func_cfg->func_cfg.rsrc_desc_count; pdesc_0 = (char *)&get_func_cfg->func_cfg.desc[0]; desc = (struct lpfc_rsrc_desc_fcfcoe *)pdesc_0; length = bf_get(lpfc_rsrc_desc_fcfcoe_length, desc); if (length == LPFC_RSRC_DESC_TYPE_FCFCOE_V0_RSVD) length = LPFC_RSRC_DESC_TYPE_FCFCOE_V0_LENGTH; else if (length != LPFC_RSRC_DESC_TYPE_FCFCOE_V1_LENGTH) goto read_cfg_out; for (i = 0; i < LPFC_RSRC_DESC_MAX_NUM; i++) { desc = (struct lpfc_rsrc_desc_fcfcoe *)(pdesc_0 + length * i); if (LPFC_RSRC_DESC_TYPE_FCFCOE == bf_get(lpfc_rsrc_desc_fcfcoe_type, desc)) { phba->sli4_hba.iov.pf_number = bf_get(lpfc_rsrc_desc_fcfcoe_pfnum, desc); phba->sli4_hba.iov.vf_number = bf_get(lpfc_rsrc_desc_fcfcoe_vfnum, desc); break; } } if (i < LPFC_RSRC_DESC_MAX_NUM) lpfc_printf_log(phba, KERN_INFO, LOG_SLI, "3027 GET_FUNCTION_CONFIG: pf_number:%d, " "vf_number:%d\n", phba->sli4_hba.iov.pf_number, phba->sli4_hba.iov.vf_number); else lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "3028 GET_FUNCTION_CONFIG: failed to find " "Resrouce Descriptor:x%x\n", LPFC_RSRC_DESC_TYPE_FCFCOE); read_cfg_out: mempool_free(pmb, phba->mbox_mem_pool); return rc; } /** * lpfc_setup_endian_order - Write endian order to an SLI4 if_type 0 port. * @phba: pointer to lpfc hba data structure. * * This routine is invoked to setup the port-side endian order when * the port if_type is 0. This routine has no function for other * if_types. * * Return codes * 0 - successful * -ENOMEM - No available memory * -EIO - The mailbox failed to complete successfully. **/ static int lpfc_setup_endian_order(struct lpfc_hba *phba) { LPFC_MBOXQ_t *mboxq; uint32_t if_type, rc = 0; uint32_t endian_mb_data[2] = {HOST_ENDIAN_LOW_WORD0, HOST_ENDIAN_HIGH_WORD1}; if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf); switch (if_type) { case LPFC_SLI_INTF_IF_TYPE_0: mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mboxq) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0492 Unable to allocate memory for " "issuing SLI_CONFIG_SPECIAL mailbox " "command\n"); return -ENOMEM; } /* * The SLI4_CONFIG_SPECIAL mailbox command requires the first * two words to contain special data values and no other data. */ memset(mboxq, 0, sizeof(LPFC_MBOXQ_t)); memcpy(&mboxq->u.mqe, &endian_mb_data, sizeof(endian_mb_data)); rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL); if (rc != MBX_SUCCESS) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0493 SLI_CONFIG_SPECIAL mailbox " "failed with status x%x\n", rc); rc = -EIO; } mempool_free(mboxq, phba->mbox_mem_pool); break; case LPFC_SLI_INTF_IF_TYPE_2: case LPFC_SLI_INTF_IF_TYPE_1: default: break; } return rc; } /** * lpfc_sli4_queue_verify - Verify and update EQ and CQ counts * @phba: pointer to lpfc hba data structure. * * This routine is invoked to check the user settable queue counts for EQs and * CQs. after this routine is called the counts will be set to valid values that * adhere to the constraints of the system's interrupt vectors and the port's * queue resources. * * Return codes * 0 - successful * -ENOMEM - No available memory **/ static int lpfc_sli4_queue_verify(struct lpfc_hba *phba) { int cfg_fcp_io_channel; uint32_t cpu; uint32_t i = 0; uint32_t j = 0; /* * Sanity check for configured queue parameters against the run-time * device parameters */ /* Sanity check on HBA EQ parameters */ cfg_fcp_io_channel = phba->cfg_fcp_io_channel; /* It doesn't make sense to have more io channels then online CPUs */ for_each_present_cpu(cpu) { if (cpu_online(cpu)) i++; j++; } phba->sli4_hba.num_online_cpu = i; phba->sli4_hba.num_present_cpu = j; if (i < cfg_fcp_io_channel) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "3188 Reducing IO channels to match number of " "online CPUs: from %d to %d\n", cfg_fcp_io_channel, i); cfg_fcp_io_channel = i; } if (cfg_fcp_io_channel > phba->sli4_hba.max_cfg_param.max_eq) { if (phba->sli4_hba.max_cfg_param.max_eq < LPFC_FCP_IO_CHAN_MIN) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2574 Not enough EQs (%d) from the " "pci function for supporting FCP " "EQs (%d)\n", phba->sli4_hba.max_cfg_param.max_eq, phba->cfg_fcp_io_channel); goto out_error; } lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2575 Reducing IO channels to match number of " "available EQs: from %d to %d\n", cfg_fcp_io_channel, phba->sli4_hba.max_cfg_param.max_eq); cfg_fcp_io_channel = phba->sli4_hba.max_cfg_param.max_eq; } /* Eventually cfg_fcp_eq_count / cfg_fcp_wq_count will be depricated */ /* The actual number of FCP event queues adopted */ phba->cfg_fcp_eq_count = cfg_fcp_io_channel; phba->cfg_fcp_wq_count = cfg_fcp_io_channel; phba->cfg_fcp_io_channel = cfg_fcp_io_channel; /* Get EQ depth from module parameter, fake the default for now */ phba->sli4_hba.eq_esize = LPFC_EQE_SIZE_4B; phba->sli4_hba.eq_ecount = LPFC_EQE_DEF_COUNT; /* Get CQ depth from module parameter, fake the default for now */ phba->sli4_hba.cq_esize = LPFC_CQE_SIZE; phba->sli4_hba.cq_ecount = LPFC_CQE_DEF_COUNT; return 0; out_error: return -ENOMEM; } /** * lpfc_sli4_queue_create - Create all the SLI4 queues * @phba: pointer to lpfc hba data structure. * * This routine is invoked to allocate all the SLI4 queues for the FCoE HBA * operation. For each SLI4 queue type, the parameters such as queue entry * count (queue depth) shall be taken from the module parameter. For now, * we just use some constant number as place holder. * * Return codes * 0 - successful * -ENOMEM - No availble memory * -EIO - The mailbox failed to complete successfully. **/ int lpfc_sli4_queue_create(struct lpfc_hba *phba) { struct lpfc_queue *qdesc; int idx; /* * Create HBA Record arrays. */ if (!phba->cfg_fcp_io_channel) return -ERANGE; phba->sli4_hba.mq_esize = LPFC_MQE_SIZE; phba->sli4_hba.mq_ecount = LPFC_MQE_DEF_COUNT; phba->sli4_hba.wq_esize = LPFC_WQE_SIZE; phba->sli4_hba.wq_ecount = LPFC_WQE_DEF_COUNT; phba->sli4_hba.rq_esize = LPFC_RQE_SIZE; phba->sli4_hba.rq_ecount = LPFC_RQE_DEF_COUNT; phba->sli4_hba.hba_eq = kzalloc((sizeof(struct lpfc_queue *) * phba->cfg_fcp_io_channel), GFP_KERNEL); if (!phba->sli4_hba.hba_eq) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2576 Failed allocate memory for " "fast-path EQ record array\n"); goto out_error; } phba->sli4_hba.fcp_cq = kzalloc((sizeof(struct lpfc_queue *) * phba->cfg_fcp_io_channel), GFP_KERNEL); if (!phba->sli4_hba.fcp_cq) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2577 Failed allocate memory for fast-path " "CQ record array\n"); goto out_error; } phba->sli4_hba.fcp_wq = kzalloc((sizeof(struct lpfc_queue *) * phba->cfg_fcp_io_channel), GFP_KERNEL); if (!phba->sli4_hba.fcp_wq) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2578 Failed allocate memory for fast-path " "WQ record array\n"); goto out_error; } /* * Since the first EQ can have multiple CQs associated with it, * this array is used to quickly see if we have a FCP fast-path * CQ match. */ phba->sli4_hba.fcp_cq_map = kzalloc((sizeof(uint16_t) * phba->cfg_fcp_io_channel), GFP_KERNEL); if (!phba->sli4_hba.fcp_cq_map) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2545 Failed allocate memory for fast-path " "CQ map\n"); goto out_error; } /* * Create HBA Event Queues (EQs). The cfg_fcp_io_channel specifies * how many EQs to create. */ for (idx = 0; idx < phba->cfg_fcp_io_channel; idx++) { /* Create EQs */ qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.eq_esize, phba->sli4_hba.eq_ecount); if (!qdesc) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0497 Failed allocate EQ (%d)\n", idx); goto out_error; } phba->sli4_hba.hba_eq[idx] = qdesc; /* Create Fast Path FCP CQs */ qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.cq_esize, phba->sli4_hba.cq_ecount); if (!qdesc) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0499 Failed allocate fast-path FCP " "CQ (%d)\n", idx); goto out_error; } phba->sli4_hba.fcp_cq[idx] = qdesc; /* Create Fast Path FCP WQs */ qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.wq_esize, phba->sli4_hba.wq_ecount); if (!qdesc) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0503 Failed allocate fast-path FCP " "WQ (%d)\n", idx); goto out_error; } phba->sli4_hba.fcp_wq[idx] = qdesc; } /* * Create Slow Path Completion Queues (CQs) */ /* Create slow-path Mailbox Command Complete Queue */ qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.cq_esize, phba->sli4_hba.cq_ecount); if (!qdesc) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0500 Failed allocate slow-path mailbox CQ\n"); goto out_error; } phba->sli4_hba.mbx_cq = qdesc; /* Create slow-path ELS Complete Queue */ qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.cq_esize, phba->sli4_hba.cq_ecount); if (!qdesc) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0501 Failed allocate slow-path ELS CQ\n"); goto out_error; } phba->sli4_hba.els_cq = qdesc; /* * Create Slow Path Work Queues (WQs) */ /* Create Mailbox Command Queue */ qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.mq_esize, phba->sli4_hba.mq_ecount); if (!qdesc) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0505 Failed allocate slow-path MQ\n"); goto out_error; } phba->sli4_hba.mbx_wq = qdesc; /* * Create ELS Work Queues */ /* Create slow-path ELS Work Queue */ qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.wq_esize, phba->sli4_hba.wq_ecount); if (!qdesc) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0504 Failed allocate slow-path ELS WQ\n"); goto out_error; } phba->sli4_hba.els_wq = qdesc; /* * Create Receive Queue (RQ) */ /* Create Receive Queue for header */ qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.rq_esize, phba->sli4_hba.rq_ecount); if (!qdesc) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0506 Failed allocate receive HRQ\n"); goto out_error; } phba->sli4_hba.hdr_rq = qdesc; /* Create Receive Queue for data */ qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.rq_esize, phba->sli4_hba.rq_ecount); if (!qdesc) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0507 Failed allocate receive DRQ\n"); goto out_error; } phba->sli4_hba.dat_rq = qdesc; return 0; out_error: lpfc_sli4_queue_destroy(phba); return -ENOMEM; } /** * lpfc_sli4_queue_destroy - Destroy all the SLI4 queues * @phba: pointer to lpfc hba data structure. * * This routine is invoked to release all the SLI4 queues with the FCoE HBA * operation. * * Return codes * 0 - successful * -ENOMEM - No available memory * -EIO - The mailbox failed to complete successfully. **/ void lpfc_sli4_queue_destroy(struct lpfc_hba *phba) { int idx; if (phba->sli4_hba.hba_eq != NULL) { /* Release HBA event queue */ for (idx = 0; idx < phba->cfg_fcp_io_channel; idx++) { if (phba->sli4_hba.hba_eq[idx] != NULL) { lpfc_sli4_queue_free( phba->sli4_hba.hba_eq[idx]); phba->sli4_hba.hba_eq[idx] = NULL; } } kfree(phba->sli4_hba.hba_eq); phba->sli4_hba.hba_eq = NULL; } if (phba->sli4_hba.fcp_cq != NULL) { /* Release FCP completion queue */ for (idx = 0; idx < phba->cfg_fcp_io_channel; idx++) { if (phba->sli4_hba.fcp_cq[idx] != NULL) { lpfc_sli4_queue_free( phba->sli4_hba.fcp_cq[idx]); phba->sli4_hba.fcp_cq[idx] = NULL; } } kfree(phba->sli4_hba.fcp_cq); phba->sli4_hba.fcp_cq = NULL; } if (phba->sli4_hba.fcp_wq != NULL) { /* Release FCP work queue */ for (idx = 0; idx < phba->cfg_fcp_io_channel; idx++) { if (phba->sli4_hba.fcp_wq[idx] != NULL) { lpfc_sli4_queue_free( phba->sli4_hba.fcp_wq[idx]); phba->sli4_hba.fcp_wq[idx] = NULL; } } kfree(phba->sli4_hba.fcp_wq); phba->sli4_hba.fcp_wq = NULL; } if (phba->pci_bar0_memmap_p) { iounmap(phba->pci_bar0_memmap_p); phba->pci_bar0_memmap_p = NULL; } if (phba->pci_bar2_memmap_p) { iounmap(phba->pci_bar2_memmap_p); phba->pci_bar2_memmap_p = NULL; } if (phba->pci_bar4_memmap_p) { iounmap(phba->pci_bar4_memmap_p); phba->pci_bar4_memmap_p = NULL; } /* Release FCP CQ mapping array */ if (phba->sli4_hba.fcp_cq_map != NULL) { kfree(phba->sli4_hba.fcp_cq_map); phba->sli4_hba.fcp_cq_map = NULL; } /* Release mailbox command work queue */ if (phba->sli4_hba.mbx_wq != NULL) { lpfc_sli4_queue_free(phba->sli4_hba.mbx_wq); phba->sli4_hba.mbx_wq = NULL; } /* Release ELS work queue */ if (phba->sli4_hba.els_wq != NULL) { lpfc_sli4_queue_free(phba->sli4_hba.els_wq); phba->sli4_hba.els_wq = NULL; } /* Release unsolicited receive queue */ if (phba->sli4_hba.hdr_rq != NULL) { lpfc_sli4_queue_free(phba->sli4_hba.hdr_rq); phba->sli4_hba.hdr_rq = NULL; } if (phba->sli4_hba.dat_rq != NULL) { lpfc_sli4_queue_free(phba->sli4_hba.dat_rq); phba->sli4_hba.dat_rq = NULL; } /* Release ELS complete queue */ if (phba->sli4_hba.els_cq != NULL) { lpfc_sli4_queue_free(phba->sli4_hba.els_cq); phba->sli4_hba.els_cq = NULL; } /* Release mailbox command complete queue */ if (phba->sli4_hba.mbx_cq != NULL) { lpfc_sli4_queue_free(phba->sli4_hba.mbx_cq); phba->sli4_hba.mbx_cq = NULL; } return; } /** * lpfc_sli4_queue_setup - Set up all the SLI4 queues * @phba: pointer to lpfc hba data structure. * * This routine is invoked to set up all the SLI4 queues for the FCoE HBA * operation. * * Return codes * 0 - successful * -ENOMEM - No available memory * -EIO - The mailbox failed to complete successfully. **/ int lpfc_sli4_queue_setup(struct lpfc_hba *phba) { struct lpfc_sli *psli = &phba->sli; struct lpfc_sli_ring *pring; int rc = -ENOMEM; int fcp_eqidx, fcp_cqidx, fcp_wqidx; int fcp_cq_index = 0; uint32_t shdr_status, shdr_add_status; union lpfc_sli4_cfg_shdr *shdr; LPFC_MBOXQ_t *mboxq; uint32_t length; /* Check for dual-ULP support */ mboxq = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mboxq) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "3249 Unable to allocate memory for " "QUERY_FW_CFG mailbox command\n"); return -ENOMEM; } length = (sizeof(struct lpfc_mbx_query_fw_config) - sizeof(struct lpfc_sli4_cfg_mhdr)); lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON, LPFC_MBOX_OPCODE_QUERY_FW_CFG, length, LPFC_SLI4_MBX_EMBED); rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL); shdr = (union lpfc_sli4_cfg_shdr *) &mboxq->u.mqe.un.sli4_config.header.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 (shdr_status || shdr_add_status || rc) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "3250 QUERY_FW_CFG mailbox failed with status " "x%x add_status x%x, mbx status x%x\n", shdr_status, shdr_add_status, rc); if (rc != MBX_TIMEOUT) mempool_free(mboxq, phba->mbox_mem_pool); rc = -ENXIO; goto out_error; } phba->sli4_hba.fw_func_mode = mboxq->u.mqe.un.query_fw_cfg.rsp.function_mode; phba->sli4_hba.ulp0_mode = mboxq->u.mqe.un.query_fw_cfg.rsp.ulp0_mode; phba->sli4_hba.ulp1_mode = mboxq->u.mqe.un.query_fw_cfg.rsp.ulp1_mode; lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "3251 QUERY_FW_CFG: func_mode:x%x, ulp0_mode:x%x, " "ulp1_mode:x%x\n", phba->sli4_hba.fw_func_mode, phba->sli4_hba.ulp0_mode, phba->sli4_hba.ulp1_mode); if (rc != MBX_TIMEOUT) mempool_free(mboxq, phba->mbox_mem_pool); /* * Set up HBA Event Queues (EQs) */ /* Set up HBA event queue */ if (phba->cfg_fcp_io_channel && !phba->sli4_hba.hba_eq) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "3147 Fast-path EQs not allocated\n"); rc = -ENOMEM; goto out_error; } for (fcp_eqidx = 0; fcp_eqidx < phba->cfg_fcp_io_channel; fcp_eqidx++) { if (!phba->sli4_hba.hba_eq[fcp_eqidx]) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0522 Fast-path EQ (%d) not " "allocated\n", fcp_eqidx); rc = -ENOMEM; goto out_destroy_hba_eq; } rc = lpfc_eq_create(phba, phba->sli4_hba.hba_eq[fcp_eqidx], (phba->cfg_fcp_imax / phba->cfg_fcp_io_channel)); if (rc) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0523 Failed setup of fast-path EQ " "(%d), rc = 0x%x\n", fcp_eqidx, rc); goto out_destroy_hba_eq; } lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "2584 HBA EQ setup: " "queue[%d]-id=%d\n", fcp_eqidx, phba->sli4_hba.hba_eq[fcp_eqidx]->queue_id); } /* Set up fast-path FCP Response Complete Queue */ if (!phba->sli4_hba.fcp_cq) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "3148 Fast-path FCP CQ array not " "allocated\n"); rc = -ENOMEM; goto out_destroy_hba_eq; } for (fcp_cqidx = 0; fcp_cqidx < phba->cfg_fcp_io_channel; fcp_cqidx++) { if (!phba->sli4_hba.fcp_cq[fcp_cqidx]) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0526 Fast-path FCP CQ (%d) not " "allocated\n", fcp_cqidx); rc = -ENOMEM; goto out_destroy_fcp_cq; } rc = lpfc_cq_create(phba, phba->sli4_hba.fcp_cq[fcp_cqidx], phba->sli4_hba.hba_eq[fcp_cqidx], LPFC_WCQ, LPFC_FCP); if (rc) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0527 Failed setup of fast-path FCP " "CQ (%d), rc = 0x%x\n", fcp_cqidx, rc); goto out_destroy_fcp_cq; } /* Setup fcp_cq_map for fast lookup */ phba->sli4_hba.fcp_cq_map[fcp_cqidx] = phba->sli4_hba.fcp_cq[fcp_cqidx]->queue_id; lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "2588 FCP CQ setup: cq[%d]-id=%d, " "parent seq[%d]-id=%d\n", fcp_cqidx, phba->sli4_hba.fcp_cq[fcp_cqidx]->queue_id, fcp_cqidx, phba->sli4_hba.hba_eq[fcp_cqidx]->queue_id); } /* Set up fast-path FCP Work Queue */ if (!phba->sli4_hba.fcp_wq) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "3149 Fast-path FCP WQ array not " "allocated\n"); rc = -ENOMEM; goto out_destroy_fcp_cq; } for (fcp_wqidx = 0; fcp_wqidx < phba->cfg_fcp_io_channel; fcp_wqidx++) { if (!phba->sli4_hba.fcp_wq[fcp_wqidx]) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0534 Fast-path FCP WQ (%d) not " "allocated\n", fcp_wqidx); rc = -ENOMEM; goto out_destroy_fcp_wq; } rc = lpfc_wq_create(phba, phba->sli4_hba.fcp_wq[fcp_wqidx], phba->sli4_hba.fcp_cq[fcp_wqidx], LPFC_FCP); if (rc) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0535 Failed setup of fast-path FCP " "WQ (%d), rc = 0x%x\n", fcp_wqidx, rc); goto out_destroy_fcp_wq; } /* Bind this WQ to the next FCP ring */ pring = &psli->ring[MAX_SLI3_CONFIGURED_RINGS + fcp_wqidx]; pring->sli.sli4.wqp = (void *)phba->sli4_hba.fcp_wq[fcp_wqidx]; phba->sli4_hba.fcp_cq[fcp_wqidx]->pring = pring; lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "2591 FCP WQ setup: wq[%d]-id=%d, " "parent cq[%d]-id=%d\n", fcp_wqidx, phba->sli4_hba.fcp_wq[fcp_wqidx]->queue_id, fcp_cq_index, phba->sli4_hba.fcp_cq[fcp_wqidx]->queue_id); } /* * Set up Complete Queues (CQs) */ /* Set up slow-path MBOX Complete Queue as the first CQ */ if (!phba->sli4_hba.mbx_cq) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0528 Mailbox CQ not allocated\n"); rc = -ENOMEM; goto out_destroy_fcp_wq; } rc = lpfc_cq_create(phba, phba->sli4_hba.mbx_cq, phba->sli4_hba.hba_eq[0], LPFC_MCQ, LPFC_MBOX); if (rc) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0529 Failed setup of slow-path mailbox CQ: " "rc = 0x%x\n", rc); goto out_destroy_fcp_wq; } lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "2585 MBX CQ setup: cq-id=%d, parent eq-id=%d\n", phba->sli4_hba.mbx_cq->queue_id, phba->sli4_hba.hba_eq[0]->queue_id); /* Set up slow-path ELS Complete Queue */ if (!phba->sli4_hba.els_cq) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0530 ELS CQ not allocated\n"); rc = -ENOMEM; goto out_destroy_mbx_cq; } rc = lpfc_cq_create(phba, phba->sli4_hba.els_cq, phba->sli4_hba.hba_eq[0], LPFC_WCQ, LPFC_ELS); if (rc) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0531 Failed setup of slow-path ELS CQ: " "rc = 0x%x\n", rc); goto out_destroy_mbx_cq; } lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "2586 ELS CQ setup: cq-id=%d, parent eq-id=%d\n", phba->sli4_hba.els_cq->queue_id, phba->sli4_hba.hba_eq[0]->queue_id); /* * Set up all the Work Queues (WQs) */ /* Set up Mailbox Command Queue */ if (!phba->sli4_hba.mbx_wq) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0538 Slow-path MQ not allocated\n"); rc = -ENOMEM; goto out_destroy_els_cq; } rc = lpfc_mq_create(phba, phba->sli4_hba.mbx_wq, phba->sli4_hba.mbx_cq, LPFC_MBOX); if (rc) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0539 Failed setup of slow-path MQ: " "rc = 0x%x\n", rc); goto out_destroy_els_cq; } lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "2589 MBX MQ setup: wq-id=%d, parent cq-id=%d\n", phba->sli4_hba.mbx_wq->queue_id, phba->sli4_hba.mbx_cq->queue_id); /* Set up slow-path ELS Work Queue */ if (!phba->sli4_hba.els_wq) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0536 Slow-path ELS WQ not allocated\n"); rc = -ENOMEM; goto out_destroy_mbx_wq; } rc = lpfc_wq_create(phba, phba->sli4_hba.els_wq, phba->sli4_hba.els_cq, LPFC_ELS); if (rc) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0537 Failed setup of slow-path ELS WQ: " "rc = 0x%x\n", rc); goto out_destroy_mbx_wq; } /* Bind this WQ to the ELS ring */ pring = &psli->ring[LPFC_ELS_RING]; pring->sli.sli4.wqp = (void *)phba->sli4_hba.els_wq; phba->sli4_hba.els_cq->pring = pring; lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "2590 ELS WQ setup: wq-id=%d, parent cq-id=%d\n", phba->sli4_hba.els_wq->queue_id, phba->sli4_hba.els_cq->queue_id); /* * Create Receive Queue (RQ) */ if (!phba->sli4_hba.hdr_rq || !phba->sli4_hba.dat_rq) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0540 Receive Queue not allocated\n"); rc = -ENOMEM; goto out_destroy_els_wq; } lpfc_rq_adjust_repost(phba, phba->sli4_hba.hdr_rq, LPFC_ELS_HBQ); lpfc_rq_adjust_repost(phba, phba->sli4_hba.dat_rq, LPFC_ELS_HBQ); rc = lpfc_rq_create(phba, phba->sli4_hba.hdr_rq, phba->sli4_hba.dat_rq, phba->sli4_hba.els_cq, LPFC_USOL); if (rc) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0541 Failed setup of Receive Queue: " "rc = 0x%x\n", rc); goto out_destroy_fcp_wq; } lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "2592 USL RQ setup: hdr-rq-id=%d, dat-rq-id=%d " "parent cq-id=%d\n", phba->sli4_hba.hdr_rq->queue_id, phba->sli4_hba.dat_rq->queue_id, phba->sli4_hba.els_cq->queue_id); return 0; out_destroy_els_wq: lpfc_wq_destroy(phba, phba->sli4_hba.els_wq); out_destroy_mbx_wq: lpfc_mq_destroy(phba, phba->sli4_hba.mbx_wq); out_destroy_els_cq: lpfc_cq_destroy(phba, phba->sli4_hba.els_cq); out_destroy_mbx_cq: lpfc_cq_destroy(phba, phba->sli4_hba.mbx_cq); out_destroy_fcp_wq: for (--fcp_wqidx; fcp_wqidx >= 0; fcp_wqidx--) lpfc_wq_destroy(phba, phba->sli4_hba.fcp_wq[fcp_wqidx]); out_destroy_fcp_cq: for (--fcp_cqidx; fcp_cqidx >= 0; fcp_cqidx--) lpfc_cq_destroy(phba, phba->sli4_hba.fcp_cq[fcp_cqidx]); out_destroy_hba_eq: for (--fcp_eqidx; fcp_eqidx >= 0; fcp_eqidx--) lpfc_eq_destroy(phba, phba->sli4_hba.hba_eq[fcp_eqidx]); out_error: return rc; } /** * lpfc_sli4_queue_unset - Unset all the SLI4 queues * @phba: pointer to lpfc hba data structure. * * This routine is invoked to unset all the SLI4 queues with the FCoE HBA * operation. * * Return codes * 0 - successful * -ENOMEM - No available memory * -EIO - The mailbox failed to complete successfully. **/ void lpfc_sli4_queue_unset(struct lpfc_hba *phba) { int fcp_qidx; /* Unset mailbox command work queue */ lpfc_mq_destroy(phba, phba->sli4_hba.mbx_wq); /* Unset ELS work queue */ lpfc_wq_destroy(phba, phba->sli4_hba.els_wq); /* Unset unsolicited receive queue */ lpfc_rq_destroy(phba, phba->sli4_hba.hdr_rq, phba->sli4_hba.dat_rq); /* Unset FCP work queue */ if (phba->sli4_hba.fcp_wq) { for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_io_channel; fcp_qidx++) lpfc_wq_destroy(phba, phba->sli4_hba.fcp_wq[fcp_qidx]); } /* Unset mailbox command complete queue */ lpfc_cq_destroy(phba, phba->sli4_hba.mbx_cq); /* Unset ELS complete queue */ lpfc_cq_destroy(phba, phba->sli4_hba.els_cq); /* Unset FCP response complete queue */ if (phba->sli4_hba.fcp_cq) { for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_io_channel; fcp_qidx++) lpfc_cq_destroy(phba, phba->sli4_hba.fcp_cq[fcp_qidx]); } /* Unset fast-path event queue */ if (phba->sli4_hba.hba_eq) { for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_io_channel; fcp_qidx++) lpfc_eq_destroy(phba, phba->sli4_hba.hba_eq[fcp_qidx]); } } /** * lpfc_sli4_cq_event_pool_create - Create completion-queue event free pool * @phba: pointer to lpfc hba data structure. * * This routine is invoked to allocate and set up a pool of completion queue * events. The body of the completion queue event is a completion queue entry * CQE. For now, this pool is used for the interrupt service routine to queue * the following HBA completion queue events for the worker thread to process: * - Mailbox asynchronous events * - Receive queue completion unsolicited events * Later, this can be used for all the slow-path events. * * Return codes * 0 - successful * -ENOMEM - No available memory **/ static int lpfc_sli4_cq_event_pool_create(struct lpfc_hba *phba) { struct lpfc_cq_event *cq_event; int i; for (i = 0; i < (4 * phba->sli4_hba.cq_ecount); i++) { cq_event = kmalloc(sizeof(struct lpfc_cq_event), GFP_KERNEL); if (!cq_event) goto out_pool_create_fail; list_add_tail(&cq_event->list, &phba->sli4_hba.sp_cqe_event_pool); } return 0; out_pool_create_fail: lpfc_sli4_cq_event_pool_destroy(phba); return -ENOMEM; } /** * lpfc_sli4_cq_event_pool_destroy - Free completion-queue event free pool * @phba: pointer to lpfc hba data structure. * * This routine is invoked to free the pool of completion queue events at * driver unload time. Note that, it is the responsibility of the driver * cleanup routine to free all the outstanding completion-queue events * allocated from this pool back into the pool before invoking this routine * to destroy the pool. **/ static void lpfc_sli4_cq_event_pool_destroy(struct lpfc_hba *phba) { struct lpfc_cq_event *cq_event, *next_cq_event; list_for_each_entry_safe(cq_event, next_cq_event, &phba->sli4_hba.sp_cqe_event_pool, list) { list_del(&cq_event->list); kfree(cq_event); } } /** * __lpfc_sli4_cq_event_alloc - Allocate a completion-queue event from free pool * @phba: pointer to lpfc hba data structure. * * This routine is the lock free version of the API invoked to allocate a * completion-queue event from the free pool. * * Return: Pointer to the newly allocated completion-queue event if successful * NULL otherwise. **/ struct lpfc_cq_event * __lpfc_sli4_cq_event_alloc(struct lpfc_hba *phba) { struct lpfc_cq_event *cq_event = NULL; list_remove_head(&phba->sli4_hba.sp_cqe_event_pool, cq_event, struct lpfc_cq_event, list); return cq_event; } /** * lpfc_sli4_cq_event_alloc - Allocate a completion-queue event from free pool * @phba: pointer to lpfc hba data structure. * * This routine is the lock version of the API invoked to allocate a * completion-queue event from the free pool. * * Return: Pointer to the newly allocated completion-queue event if successful * NULL otherwise. **/ struct lpfc_cq_event * lpfc_sli4_cq_event_alloc(struct lpfc_hba *phba) { struct lpfc_cq_event *cq_event; unsigned long iflags; spin_lock_irqsave(&phba->hbalock, iflags); cq_event = __lpfc_sli4_cq_event_alloc(phba); spin_unlock_irqrestore(&phba->hbalock, iflags); return cq_event; } /** * __lpfc_sli4_cq_event_release - Release a completion-queue event to free pool * @phba: pointer to lpfc hba data structure. * @cq_event: pointer to the completion queue event to be freed. * * This routine is the lock free version of the API invoked to release a * completion-queue event back into the free pool. **/ void __lpfc_sli4_cq_event_release(struct lpfc_hba *phba, struct lpfc_cq_event *cq_event) { list_add_tail(&cq_event->list, &phba->sli4_hba.sp_cqe_event_pool); } /** * lpfc_sli4_cq_event_release - Release a completion-queue event to free pool * @phba: pointer to lpfc hba data structure. * @cq_event: pointer to the completion queue event to be freed. * * This routine is the lock version of the API invoked to release a * completion-queue event back into the free pool. **/ void lpfc_sli4_cq_event_release(struct lpfc_hba *phba, struct lpfc_cq_event *cq_event) { unsigned long iflags; spin_lock_irqsave(&phba->hbalock, iflags); __lpfc_sli4_cq_event_release(phba, cq_event); spin_unlock_irqrestore(&phba->hbalock, iflags); } /** * lpfc_sli4_cq_event_release_all - Release all cq events to the free pool * @phba: pointer to lpfc hba data structure. * * This routine is to free all the pending completion-queue events to the * back into the free pool for device reset. **/ static void lpfc_sli4_cq_event_release_all(struct lpfc_hba *phba) { LIST_HEAD(cqelist); struct lpfc_cq_event *cqe; unsigned long iflags; /* Retrieve all the pending WCQEs from pending WCQE lists */ spin_lock_irqsave(&phba->hbalock, iflags); /* Pending FCP XRI abort events */ list_splice_init(&phba->sli4_hba.sp_fcp_xri_aborted_work_queue, &cqelist); /* Pending ELS XRI abort events */ list_splice_init(&phba->sli4_hba.sp_els_xri_aborted_work_queue, &cqelist); /* Pending asynnc events */ list_splice_init(&phba->sli4_hba.sp_asynce_work_queue, &cqelist); spin_unlock_irqrestore(&phba->hbalock, iflags); while (!list_empty(&cqelist)) { list_remove_head(&cqelist, cqe, struct lpfc_cq_event, list); lpfc_sli4_cq_event_release(phba, cqe); } } /** * lpfc_pci_function_reset - Reset pci function. * @phba: pointer to lpfc hba data structure. * * This routine is invoked to request a PCI function reset. It will destroys * all resources assigned to the PCI function which originates this request. * * Return codes * 0 - successful * -ENOMEM - No available memory * -EIO - The mailbox failed to complete successfully. **/ int lpfc_pci_function_reset(struct lpfc_hba *phba) { LPFC_MBOXQ_t *mboxq; uint32_t rc = 0, if_type; uint32_t shdr_status, shdr_add_status; uint32_t rdy_chk, num_resets = 0, reset_again = 0; union lpfc_sli4_cfg_shdr *shdr; struct lpfc_register reg_data; uint16_t devid; if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf); switch (if_type) { case LPFC_SLI_INTF_IF_TYPE_0: mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mboxq) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0494 Unable to allocate memory for " "issuing SLI_FUNCTION_RESET mailbox " "command\n"); return -ENOMEM; } /* Setup PCI function reset mailbox-ioctl command */ lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON, LPFC_MBOX_OPCODE_FUNCTION_RESET, 0, LPFC_SLI4_MBX_EMBED); rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL); shdr = (union lpfc_sli4_cfg_shdr *) &mboxq->u.mqe.un.sli4_config.header.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) mempool_free(mboxq, phba->mbox_mem_pool); if (shdr_status || shdr_add_status || rc) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0495 SLI_FUNCTION_RESET mailbox " "failed with status x%x add_status x%x," " mbx status x%x\n", shdr_status, shdr_add_status, rc); rc = -ENXIO; } break; case LPFC_SLI_INTF_IF_TYPE_2: for (num_resets = 0; num_resets < MAX_IF_TYPE_2_RESETS; num_resets++) { reg_data.word0 = 0; bf_set(lpfc_sliport_ctrl_end, ®_data, LPFC_SLIPORT_LITTLE_ENDIAN); bf_set(lpfc_sliport_ctrl_ip, ®_data, LPFC_SLIPORT_INIT_PORT); writel(reg_data.word0, phba->sli4_hba.u.if_type2. CTRLregaddr); /* flush */ pci_read_config_word(phba->pcidev, PCI_DEVICE_ID, &devid); /* * Poll the Port Status Register and wait for RDY for * up to 10 seconds. If the port doesn't respond, treat * it as an error. If the port responds with RN, start * the loop again. */ for (rdy_chk = 0; rdy_chk < 1000; rdy_chk++) { msleep(10); if (lpfc_readl(phba->sli4_hba.u.if_type2. STATUSregaddr, ®_data.word0)) { rc = -ENODEV; goto out; } if (bf_get(lpfc_sliport_status_rn, ®_data)) reset_again++; if (bf_get(lpfc_sliport_status_rdy, ®_data)) break; } /* * If the port responds to the init request with * reset needed, delay for a bit and restart the loop. */ if (reset_again && (rdy_chk < 1000)) { msleep(10); reset_again = 0; continue; } /* Detect any port errors. */ if ((bf_get(lpfc_sliport_status_err, ®_data)) || (rdy_chk >= 1000)) { phba->work_status[0] = readl( phba->sli4_hba.u.if_type2.ERR1regaddr); phba->work_status[1] = readl( phba->sli4_hba.u.if_type2.ERR2regaddr); lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2890 Port error detected during port " "reset(%d): wait_tmo:%d ms, " "port status reg 0x%x, " "error 1=0x%x, error 2=0x%x\n", num_resets, rdy_chk*10, reg_data.word0, phba->work_status[0], phba->work_status[1]); rc = -ENODEV; } /* * Terminate the outer loop provided the Port indicated * ready within 10 seconds. */ if (rdy_chk < 1000) break; } /* delay driver action following IF_TYPE_2 function reset */ msleep(100); break; case LPFC_SLI_INTF_IF_TYPE_1: default: break; } out: /* Catch the not-ready port failure after a port reset. */ if (num_resets >= MAX_IF_TYPE_2_RESETS) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "3317 HBA not functional: IP Reset Failed " "after (%d) retries, try: " "echo fw_reset > board_mode\n", num_resets); rc = -ENODEV; } return rc; } /** * lpfc_sli4_pci_mem_setup - Setup SLI4 HBA PCI memory space. * @phba: pointer to lpfc hba data structure. * * This routine is invoked to set up the PCI device memory space for device * with SLI-4 interface spec. * * Return codes * 0 - successful * other values - error **/ static int lpfc_sli4_pci_mem_setup(struct lpfc_hba *phba) { struct pci_dev *pdev; unsigned long bar0map_len, bar1map_len, bar2map_len; int error = -ENODEV; uint32_t if_type; /* Obtain PCI device reference */ if (!phba->pcidev) return error; else pdev = phba->pcidev; /* Set the device DMA mask size */ if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0 || pci_set_consistent_dma_mask(pdev,DMA_BIT_MASK(64)) != 0) { if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0 || pci_set_consistent_dma_mask(pdev,DMA_BIT_MASK(32)) != 0) { return error; } } /* * The BARs and register set definitions and offset locations are * dependent on the if_type. */ if (pci_read_config_dword(pdev, LPFC_SLI_INTF, &phba->sli4_hba.sli_intf.word0)) { return error; } /* There is no SLI3 failback for SLI4 devices. */ if (bf_get(lpfc_sli_intf_valid, &phba->sli4_hba.sli_intf) != LPFC_SLI_INTF_VALID) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2894 SLI_INTF reg contents invalid " "sli_intf reg 0x%x\n", phba->sli4_hba.sli_intf.word0); return error; } if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf); /* * Get the bus address of SLI4 device Bar regions and the * number of bytes required by each mapping. The mapping of the * particular PCI BARs regions is dependent on the type of * SLI4 device. */ if (pci_resource_start(pdev, 0)) { phba->pci_bar0_map = pci_resource_start(pdev, 0); bar0map_len = pci_resource_len(pdev, 0); /* * Map SLI4 PCI Config Space Register base to a kernel virtual * addr */ phba->sli4_hba.conf_regs_memmap_p = ioremap(phba->pci_bar0_map, bar0map_len); if (!phba->sli4_hba.conf_regs_memmap_p) { dev_printk(KERN_ERR, &pdev->dev, "ioremap failed for SLI4 PCI config " "registers.\n"); goto out; } /* Set up BAR0 PCI config space register memory map */ lpfc_sli4_bar0_register_memmap(phba, if_type); } else { phba->pci_bar0_map = pci_resource_start(pdev, 1); bar0map_len = pci_resource_len(pdev, 1); if (if_type == LPFC_SLI_INTF_IF_TYPE_2) { dev_printk(KERN_ERR, &pdev->dev, "FATAL - No BAR0 mapping for SLI4, if_type 2\n"); goto out; } phba->sli4_hba.conf_regs_memmap_p = ioremap(phba->pci_bar0_map, bar0map_len); if (!phba->sli4_hba.conf_regs_memmap_p) { dev_printk(KERN_ERR, &pdev->dev, "ioremap failed for SLI4 PCI config " "registers.\n"); goto out; } lpfc_sli4_bar0_register_memmap(phba, if_type); } if ((if_type == LPFC_SLI_INTF_IF_TYPE_0) && (pci_resource_start(pdev, 2))) { /* * Map SLI4 if type 0 HBA Control Register base to a kernel * virtual address and setup the registers. */ phba->pci_bar1_map = pci_resource_start(pdev, 2); bar1map_len = pci_resource_len(pdev, 2); phba->sli4_hba.ctrl_regs_memmap_p = ioremap(phba->pci_bar1_map, bar1map_len); if (!phba->sli4_hba.ctrl_regs_memmap_p) { dev_printk(KERN_ERR, &pdev->dev, "ioremap failed for SLI4 HBA control registers.\n"); goto out_iounmap_conf; } lpfc_sli4_bar1_register_memmap(phba); } if ((if_type == LPFC_SLI_INTF_IF_TYPE_0) && (pci_resource_start(pdev, 4))) { /* * Map SLI4 if type 0 HBA Doorbell Register base to a kernel * virtual address and setup the registers. */ phba->pci_bar2_map = pci_resource_start(pdev, 4); bar2map_len = pci_resource_len(pdev, 4); phba->sli4_hba.drbl_regs_memmap_p = ioremap(phba->pci_bar2_map, bar2map_len); if (!phba->sli4_hba.drbl_regs_memmap_p) { dev_printk(KERN_ERR, &pdev->dev, "ioremap failed for SLI4 HBA doorbell registers.\n"); goto out_iounmap_ctrl; } error = lpfc_sli4_bar2_register_memmap(phba, LPFC_VF0); if (error) goto out_iounmap_all; } return 0; out_iounmap_all: iounmap(phba->sli4_hba.drbl_regs_memmap_p); out_iounmap_ctrl: iounmap(phba->sli4_hba.ctrl_regs_memmap_p); out_iounmap_conf: iounmap(phba->sli4_hba.conf_regs_memmap_p); out: return error; } /** * lpfc_sli4_pci_mem_unset - Unset SLI4 HBA PCI memory space. * @phba: pointer to lpfc hba data structure. * * This routine is invoked to unset the PCI device memory space for device * with SLI-4 interface spec. **/ static void lpfc_sli4_pci_mem_unset(struct lpfc_hba *phba) { uint32_t if_type; if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf); switch (if_type) { case LPFC_SLI_INTF_IF_TYPE_0: iounmap(phba->sli4_hba.drbl_regs_memmap_p); iounmap(phba->sli4_hba.ctrl_regs_memmap_p); iounmap(phba->sli4_hba.conf_regs_memmap_p); break; case LPFC_SLI_INTF_IF_TYPE_2: iounmap(phba->sli4_hba.conf_regs_memmap_p); break; case LPFC_SLI_INTF_IF_TYPE_1: default: dev_printk(KERN_ERR, &phba->pcidev->dev, "FATAL - unsupported SLI4 interface type - %d\n", if_type); break; } } /** * lpfc_sli_enable_msix - Enable MSI-X interrupt mode on SLI-3 device * @phba: pointer to lpfc hba data structure. * * This routine is invoked to enable the MSI-X interrupt vectors to device * with SLI-3 interface specs. The kernel function pci_enable_msix() is * called to enable the MSI-X vectors. Note that pci_enable_msix(), once * invoked, enables either all or nothing, depending on the current * availability of PCI vector resources. The device driver is responsible * for calling the individual request_irq() to register each MSI-X vector * with a interrupt handler, which is done in this function. Note that * later when device is unloading, the driver should always call free_irq() * on all MSI-X vectors it has done request_irq() on before calling * pci_disable_msix(). Failure to do so results in a BUG_ON() and a device * will be left with MSI-X enabled and leaks its vectors. * * Return codes * 0 - successful * other values - error **/ static int lpfc_sli_enable_msix(struct lpfc_hba *phba) { int rc, i; LPFC_MBOXQ_t *pmb; /* Set up MSI-X multi-message vectors */ for (i = 0; i < LPFC_MSIX_VECTORS; i++) phba->msix_entries[i].entry = i; /* Configure MSI-X capability structure */ rc = pci_enable_msix(phba->pcidev, phba->msix_entries, ARRAY_SIZE(phba->msix_entries)); if (rc) { lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "0420 PCI enable MSI-X failed (%d)\n", rc); goto msi_fail_out; } for (i = 0; i < LPFC_MSIX_VECTORS; i++) lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "0477 MSI-X entry[%d]: vector=x%x " "message=%d\n", i, phba->msix_entries[i].vector, phba->msix_entries[i].entry); /* * Assign MSI-X vectors to interrupt handlers */ /* vector-0 is associated to slow-path handler */ rc = request_irq(phba->msix_entries[0].vector, &lpfc_sli_sp_intr_handler, IRQF_SHARED, LPFC_SP_DRIVER_HANDLER_NAME, phba); if (rc) { lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, "0421 MSI-X slow-path request_irq failed " "(%d)\n", rc); goto msi_fail_out; } /* vector-1 is associated to fast-path handler */ rc = request_irq(phba->msix_entries[1].vector, &lpfc_sli_fp_intr_handler, IRQF_SHARED, LPFC_FP_DRIVER_HANDLER_NAME, phba); if (rc) { lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, "0429 MSI-X fast-path request_irq failed " "(%d)\n", rc); goto irq_fail_out; } /* * Configure HBA MSI-X attention conditions to messages */ pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!pmb) { rc = -ENOMEM; lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0474 Unable to allocate memory for issuing " "MBOX_CONFIG_MSI command\n"); goto mem_fail_out; } rc = lpfc_config_msi(phba, pmb); if (rc) goto mbx_fail_out; rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL); if (rc != MBX_SUCCESS) { lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX, "0351 Config MSI mailbox command failed, " "mbxCmd x%x, mbxStatus x%x\n", pmb->u.mb.mbxCommand, pmb->u.mb.mbxStatus); goto mbx_fail_out; } /* Free memory allocated for mailbox command */ mempool_free(pmb, phba->mbox_mem_pool); return rc; mbx_fail_out: /* Free memory allocated for mailbox command */ mempool_free(pmb, phba->mbox_mem_pool); mem_fail_out: /* free the irq already requested */ free_irq(phba->msix_entries[1].vector, phba); irq_fail_out: /* free the irq already requested */ free_irq(phba->msix_entries[0].vector, phba); msi_fail_out: /* Unconfigure MSI-X capability structure */ pci_disable_msix(phba->pcidev); return rc; } /** * lpfc_sli_disable_msix - Disable MSI-X interrupt mode on SLI-3 device. * @phba: pointer to lpfc hba data structure. * * This routine is invoked to release the MSI-X vectors and then disable the * MSI-X interrupt mode to device with SLI-3 interface spec. **/ static void lpfc_sli_disable_msix(struct lpfc_hba *phba) { int i; /* Free up MSI-X multi-message vectors */ for (i = 0; i < LPFC_MSIX_VECTORS; i++) free_irq(phba->msix_entries[i].vector, phba); /* Disable MSI-X */ pci_disable_msix(phba->pcidev); return; } /** * lpfc_sli_enable_msi - Enable MSI interrupt mode on SLI-3 device. * @phba: pointer to lpfc hba data structure. * * This routine is invoked to enable the MSI interrupt mode to device with * SLI-3 interface spec. The kernel function pci_enable_msi() is called to * enable the MSI vector. The device driver is responsible for calling the * request_irq() to register MSI vector with a interrupt the handler, which * is done in this function. * * Return codes * 0 - successful * other values - error */ static int lpfc_sli_enable_msi(struct lpfc_hba *phba) { int rc; rc = pci_enable_msi(phba->pcidev); if (!rc) lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "0462 PCI enable MSI mode success.\n"); else { lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "0471 PCI enable MSI mode failed (%d)\n", rc); return rc; } rc = request_irq(phba->pcidev->irq, lpfc_sli_intr_handler, IRQF_SHARED, LPFC_DRIVER_NAME, phba); if (rc) { pci_disable_msi(phba->pcidev); lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, "0478 MSI request_irq failed (%d)\n", rc); } return rc; } /** * lpfc_sli_disable_msi - Disable MSI interrupt mode to SLI-3 device. * @phba: pointer to lpfc hba data structure. * * This routine is invoked to disable the MSI interrupt mode to device with * SLI-3 interface spec. The driver calls free_irq() on MSI vector it has * done request_irq() on before calling pci_disable_msi(). Failure to do so * results in a BUG_ON() and a device will be left with MSI enabled and leaks * its vector. */ static void lpfc_sli_disable_msi(struct lpfc_hba *phba) { free_irq(phba->pcidev->irq, phba); pci_disable_msi(phba->pcidev); return; } /** * lpfc_sli_enable_intr - Enable device interrupt to SLI-3 device. * @phba: pointer to lpfc hba data structure. * * This routine is invoked to enable device interrupt and associate driver's * interrupt handler(s) to interrupt vector(s) to device with SLI-3 interface * spec. Depends on the interrupt mode configured to the driver, the driver * will try to fallback from the configured interrupt mode to an interrupt * mode which is supported by the platform, kernel, and device in the order * of: * MSI-X -> MSI -> IRQ. * * Return codes * 0 - successful * other values - error **/ static uint32_t lpfc_sli_enable_intr(struct lpfc_hba *phba, uint32_t cfg_mode) { uint32_t intr_mode = LPFC_INTR_ERROR; int retval; if (cfg_mode == 2) { /* Need to issue conf_port mbox cmd before conf_msi mbox cmd */ retval = lpfc_sli_config_port(phba, LPFC_SLI_REV3); if (!retval) { /* Now, try to enable MSI-X interrupt mode */ retval = lpfc_sli_enable_msix(phba); if (!retval) { /* Indicate initialization to MSI-X mode */ phba->intr_type = MSIX; intr_mode = 2; } } } /* Fallback to MSI if MSI-X initialization failed */ if (cfg_mode >= 1 && phba->intr_type == NONE) { retval = lpfc_sli_enable_msi(phba); if (!retval) { /* Indicate initialization to MSI mode */ phba->intr_type = MSI; intr_mode = 1; } } /* Fallback to INTx if both MSI-X/MSI initalization failed */ if (phba->intr_type == NONE) { retval = request_irq(phba->pcidev->irq, lpfc_sli_intr_handler, IRQF_SHARED, LPFC_DRIVER_NAME, phba); if (!retval) { /* Indicate initialization to INTx mode */ phba->intr_type = INTx; intr_mode = 0; } } return intr_mode; } /** * lpfc_sli_disable_intr - Disable device interrupt to SLI-3 device. * @phba: pointer to lpfc hba data structure. * * This routine is invoked to disable device interrupt and disassociate the * driver's interrupt handler(s) from interrupt vector(s) to device with * SLI-3 interface spec. Depending on the interrupt mode, the driver will * release the interrupt vector(s) for the message signaled interrupt. **/ static void lpfc_sli_disable_intr(struct lpfc_hba *phba) { /* Disable the currently initialized interrupt mode */ if (phba->intr_type == MSIX) lpfc_sli_disable_msix(phba); else if (phba->intr_type == MSI) lpfc_sli_disable_msi(phba); else if (phba->intr_type == INTx) free_irq(phba->pcidev->irq, phba); /* Reset interrupt management states */ phba->intr_type = NONE; phba->sli.slistat.sli_intr = 0; return; } /** * lpfc_find_next_cpu - Find next available CPU that matches the phys_id * @phba: pointer to lpfc hba data structure. * * Find next available CPU to use for IRQ to CPU affinity. */ static int lpfc_find_next_cpu(struct lpfc_hba *phba, uint32_t phys_id) { struct lpfc_vector_map_info *cpup; int cpu; cpup = phba->sli4_hba.cpu_map; for (cpu = 0; cpu < phba->sli4_hba.num_present_cpu; cpu++) { /* CPU must be online */ if (cpu_online(cpu)) { if ((cpup->irq == LPFC_VECTOR_MAP_EMPTY) && (lpfc_used_cpu[cpu] == LPFC_VECTOR_MAP_EMPTY) && (cpup->phys_id == phys_id)) { return cpu; } } cpup++; } /* * If we get here, we have used ALL CPUs for the specific * phys_id. Now we need to clear out lpfc_used_cpu and start * reusing CPUs. */ for (cpu = 0; cpu < phba->sli4_hba.num_present_cpu; cpu++) { if (lpfc_used_cpu[cpu] == phys_id) lpfc_used_cpu[cpu] = LPFC_VECTOR_MAP_EMPTY; } cpup = phba->sli4_hba.cpu_map; for (cpu = 0; cpu < phba->sli4_hba.num_present_cpu; cpu++) { /* CPU must be online */ if (cpu_online(cpu)) { if ((cpup->irq == LPFC_VECTOR_MAP_EMPTY) && (cpup->phys_id == phys_id)) { return cpu; } } cpup++; } return LPFC_VECTOR_MAP_EMPTY; } /** * lpfc_sli4_set_affinity - Set affinity for HBA IRQ vectors * @phba: pointer to lpfc hba data structure. * @vectors: number of HBA vectors * * Affinitize MSIX IRQ vectors to CPUs. Try to equally spread vector * affinization across multple physical CPUs (numa nodes). * In addition, this routine will assign an IO channel for each CPU * to use when issuing I/Os. */ static int lpfc_sli4_set_affinity(struct lpfc_hba *phba, int vectors) { int i, idx, saved_chann, used_chann, cpu, phys_id; int max_phys_id, num_io_channel, first_cpu; struct lpfc_vector_map_info *cpup; #ifdef CONFIG_X86 struct cpuinfo_x86 *cpuinfo; #endif struct cpumask *mask; uint8_t chann[LPFC_FCP_IO_CHAN_MAX+1]; /* If there is no mapping, just return */ if (!phba->cfg_fcp_cpu_map) return 1; /* Init cpu_map array */ memset(phba->sli4_hba.cpu_map, 0xff, (sizeof(struct lpfc_vector_map_info) * phba->sli4_hba.num_present_cpu)); max_phys_id = 0; phys_id = 0; num_io_channel = 0; first_cpu = LPFC_VECTOR_MAP_EMPTY; /* Update CPU map with physical id and core id of each CPU */ cpup = phba->sli4_hba.cpu_map; for (cpu = 0; cpu < phba->sli4_hba.num_present_cpu; cpu++) { #ifdef CONFIG_X86 cpuinfo = &cpu_data(cpu); cpup->phys_id = cpuinfo->phys_proc_id; cpup->core_id = cpuinfo->cpu_core_id; #else /* No distinction between CPUs for other platforms */ cpup->phys_id = 0; cpup->core_id = 0; #endif lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "3328 CPU physid %d coreid %d\n", cpup->phys_id, cpup->core_id); if (cpup->phys_id > max_phys_id) max_phys_id = cpup->phys_id; cpup++; } /* Now associate the HBA vectors with specific CPUs */ for (idx = 0; idx < vectors; idx++) { cpup = phba->sli4_hba.cpu_map; cpu = lpfc_find_next_cpu(phba, phys_id); if (cpu == LPFC_VECTOR_MAP_EMPTY) { /* Try for all phys_id's */ for (i = 1; i < max_phys_id; i++) { phys_id++; if (phys_id > max_phys_id) phys_id = 0; cpu = lpfc_find_next_cpu(phba, phys_id); if (cpu == LPFC_VECTOR_MAP_EMPTY) continue; goto found; } lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "3329 Cannot set affinity:" "Error mapping vector %d (%d)\n", idx, vectors); return 0; } found: cpup += cpu; if (phba->cfg_fcp_cpu_map == LPFC_DRIVER_CPU_MAP) lpfc_used_cpu[cpu] = phys_id; /* Associate vector with selected CPU */ cpup->irq = phba->sli4_hba.msix_entries[idx].vector; /* Associate IO channel with selected CPU */ cpup->channel_id = idx; num_io_channel++; if (first_cpu == LPFC_VECTOR_MAP_EMPTY) first_cpu = cpu; /* Now affinitize to the selected CPU */ mask = &cpup->maskbits; cpumask_clear(mask); cpumask_set_cpu(cpu, mask); i = irq_set_affinity_hint(phba->sli4_hba.msix_entries[idx]. vector, mask); lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "3330 Set Affinity: CPU %d channel %d " "irq %d (%x)\n", cpu, cpup->channel_id, phba->sli4_hba.msix_entries[idx].vector, i); /* Spread vector mapping across multple physical CPU nodes */ phys_id++; if (phys_id > max_phys_id) phys_id = 0; } /* * Finally fill in the IO channel for any remaining CPUs. * At this point, all IO channels have been assigned to a specific * MSIx vector, mapped to a specific CPU. * Base the remaining IO channel assigned, to IO channels already * assigned to other CPUs on the same phys_id. */ for (i = 0; i <= max_phys_id; i++) { /* * If there are no io channels already mapped to * this phys_id, just round robin thru the io_channels. * Setup chann[] for round robin. */ for (idx = 0; idx < phba->cfg_fcp_io_channel; idx++) chann[idx] = idx; saved_chann = 0; used_chann = 0; /* * First build a list of IO channels already assigned * to this phys_id before reassigning the same IO * channels to the remaining CPUs. */ cpup = phba->sli4_hba.cpu_map; cpu = first_cpu; cpup += cpu; for (idx = 0; idx < phba->sli4_hba.num_present_cpu; idx++) { if (cpup->phys_id == i) { /* * Save any IO channels that are * already mapped to this phys_id. */ if (cpup->irq != LPFC_VECTOR_MAP_EMPTY) { chann[saved_chann] = cpup->channel_id; saved_chann++; goto out; } /* See if we are using round-robin */ if (saved_chann == 0) saved_chann = phba->cfg_fcp_io_channel; /* Associate next IO channel with CPU */ cpup->channel_id = chann[used_chann]; num_io_channel++; used_chann++; if (used_chann == saved_chann) used_chann = 0; lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "3331 Set IO_CHANN " "CPU %d channel %d\n", idx, cpup->channel_id); } out: cpu++; if (cpu >= phba->sli4_hba.num_present_cpu) { cpup = phba->sli4_hba.cpu_map; cpu = 0; } else { cpup++; } } } if (phba->sli4_hba.num_online_cpu != phba->sli4_hba.num_present_cpu) { cpup = phba->sli4_hba.cpu_map; for (idx = 0; idx < phba->sli4_hba.num_present_cpu; idx++) { if (cpup->channel_id == LPFC_VECTOR_MAP_EMPTY) { cpup->channel_id = 0; num_io_channel++; lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "3332 Assign IO_CHANN " "CPU %d channel %d\n", idx, cpup->channel_id); } cpup++; } } /* Sanity check */ if (num_io_channel != phba->sli4_hba.num_present_cpu) lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "3333 Set affinity mismatch:" "%d chann != %d cpus: %d vactors\n", num_io_channel, phba->sli4_hba.num_present_cpu, vectors); phba->cfg_fcp_io_sched = LPFC_FCP_SCHED_BY_CPU; return 1; } /** * lpfc_sli4_enable_msix - Enable MSI-X interrupt mode to SLI-4 device * @phba: pointer to lpfc hba data structure. * * This routine is invoked to enable the MSI-X interrupt vectors to device * with SLI-4 interface spec. The kernel function pci_enable_msix() is called * to enable the MSI-X vectors. Note that pci_enable_msix(), once invoked, * enables either all or nothing, depending on the current availability of * PCI vector resources. The device driver is responsible for calling the * individual request_irq() to register each MSI-X vector with a interrupt * handler, which is done in this function. Note that later when device is * unloading, the driver should always call free_irq() on all MSI-X vectors * it has done request_irq() on before calling pci_disable_msix(). Failure * to do so results in a BUG_ON() and a device will be left with MSI-X * enabled and leaks its vectors. * * Return codes * 0 - successful * other values - error **/ static int lpfc_sli4_enable_msix(struct lpfc_hba *phba) { int vectors, rc, index; /* Set up MSI-X multi-message vectors */ for (index = 0; index < phba->cfg_fcp_io_channel; index++) phba->sli4_hba.msix_entries[index].entry = index; /* Configure MSI-X capability structure */ vectors = phba->cfg_fcp_io_channel; enable_msix_vectors: rc = pci_enable_msix(phba->pcidev, phba->sli4_hba.msix_entries, vectors); if (rc > 1) { vectors = rc; goto enable_msix_vectors; } else if (rc) { lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "0484 PCI enable MSI-X failed (%d)\n", rc); goto msi_fail_out; } /* Log MSI-X vector assignment */ for (index = 0; index < vectors; index++) lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "0489 MSI-X entry[%d]: vector=x%x " "message=%d\n", index, phba->sli4_hba.msix_entries[index].vector, phba->sli4_hba.msix_entries[index].entry); /* Assign MSI-X vectors to interrupt handlers */ for (index = 0; index < vectors; index++) { memset(&phba->sli4_hba.handler_name[index], 0, 16); sprintf((char *)&phba->sli4_hba.handler_name[index], LPFC_DRIVER_HANDLER_NAME"%d", index); phba->sli4_hba.fcp_eq_hdl[index].idx = index; phba->sli4_hba.fcp_eq_hdl[index].phba = phba; atomic_set(&phba->sli4_hba.fcp_eq_hdl[index].fcp_eq_in_use, 1); rc = request_irq(phba->sli4_hba.msix_entries[index].vector, &lpfc_sli4_hba_intr_handler, IRQF_SHARED, (char *)&phba->sli4_hba.handler_name[index], &phba->sli4_hba.fcp_eq_hdl[index]); if (rc) { lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, "0486 MSI-X fast-path (%d) " "request_irq failed (%d)\n", index, rc); goto cfg_fail_out; } } if (vectors != phba->cfg_fcp_io_channel) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "3238 Reducing IO channels to match number of " "MSI-X vectors, requested %d got %d\n", phba->cfg_fcp_io_channel, vectors); phba->cfg_fcp_io_channel = vectors; } lpfc_sli4_set_affinity(phba, vectors); return rc; cfg_fail_out: /* free the irq already requested */ for (--index; index >= 0; index--) free_irq(phba->sli4_hba.msix_entries[index].vector, &phba->sli4_hba.fcp_eq_hdl[index]); msi_fail_out: /* Unconfigure MSI-X capability structure */ pci_disable_msix(phba->pcidev); return rc; } /** * lpfc_sli4_disable_msix - Disable MSI-X interrupt mode to SLI-4 device * @phba: pointer to lpfc hba data structure. * * This routine is invoked to release the MSI-X vectors and then disable the * MSI-X interrupt mode to device with SLI-4 interface spec. **/ static void lpfc_sli4_disable_msix(struct lpfc_hba *phba) { int index; /* Free up MSI-X multi-message vectors */ for (index = 0; index < phba->cfg_fcp_io_channel; index++) free_irq(phba->sli4_hba.msix_entries[index].vector, &phba->sli4_hba.fcp_eq_hdl[index]); /* Disable MSI-X */ pci_disable_msix(phba->pcidev); return; } /** * lpfc_sli4_enable_msi - Enable MSI interrupt mode to SLI-4 device * @phba: pointer to lpfc hba data structure. * * This routine is invoked to enable the MSI interrupt mode to device with * SLI-4 interface spec. The kernel function pci_enable_msi() is called * to enable the MSI vector. The device driver is responsible for calling * the request_irq() to register MSI vector with a interrupt the handler, * which is done in this function. * * Return codes * 0 - successful * other values - error **/ static int lpfc_sli4_enable_msi(struct lpfc_hba *phba) { int rc, index; rc = pci_enable_msi(phba->pcidev); if (!rc) lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "0487 PCI enable MSI mode success.\n"); else { lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "0488 PCI enable MSI mode failed (%d)\n", rc); return rc; } rc = request_irq(phba->pcidev->irq, lpfc_sli4_intr_handler, IRQF_SHARED, LPFC_DRIVER_NAME, phba); if (rc) { pci_disable_msi(phba->pcidev); lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, "0490 MSI request_irq failed (%d)\n", rc); return rc; } for (index = 0; index < phba->cfg_fcp_io_channel; index++) { phba->sli4_hba.fcp_eq_hdl[index].idx = index; phba->sli4_hba.fcp_eq_hdl[index].phba = phba; } return 0; } /** * lpfc_sli4_disable_msi - Disable MSI interrupt mode to SLI-4 device * @phba: pointer to lpfc hba data structure. * * This routine is invoked to disable the MSI interrupt mode to device with * SLI-4 interface spec. The driver calls free_irq() on MSI vector it has * done request_irq() on before calling pci_disable_msi(). Failure to do so * results in a BUG_ON() and a device will be left with MSI enabled and leaks * its vector. **/ static void lpfc_sli4_disable_msi(struct lpfc_hba *phba) { free_irq(phba->pcidev->irq, phba); pci_disable_msi(phba->pcidev); return; } /** * lpfc_sli4_enable_intr - Enable device interrupt to SLI-4 device * @phba: pointer to lpfc hba data structure. * * This routine is invoked to enable device interrupt and associate driver's * interrupt handler(s) to interrupt vector(s) to device with SLI-4 * interface spec. Depends on the interrupt mode configured to the driver, * the driver will try to fallback from the configured interrupt mode to an * interrupt mode which is supported by the platform, kernel, and device in * the order of: * MSI-X -> MSI -> IRQ. * * Return codes * 0 - successful * other values - error **/ static uint32_t lpfc_sli4_enable_intr(struct lpfc_hba *phba, uint32_t cfg_mode) { uint32_t intr_mode = LPFC_INTR_ERROR; int retval, index; if (cfg_mode == 2) { /* Preparation before conf_msi mbox cmd */ retval = 0; if (!retval) { /* Now, try to enable MSI-X interrupt mode */ retval = lpfc_sli4_enable_msix(phba); if (!retval) { /* Indicate initialization to MSI-X mode */ phba->intr_type = MSIX; intr_mode = 2; } } } /* Fallback to MSI if MSI-X initialization failed */ if (cfg_mode >= 1 && phba->intr_type == NONE) { retval = lpfc_sli4_enable_msi(phba); if (!retval) { /* Indicate initialization to MSI mode */ phba->intr_type = MSI; intr_mode = 1; } } /* Fallback to INTx if both MSI-X/MSI initalization failed */ if (phba->intr_type == NONE) { retval = request_irq(phba->pcidev->irq, lpfc_sli4_intr_handler, IRQF_SHARED, LPFC_DRIVER_NAME, phba); if (!retval) { /* Indicate initialization to INTx mode */ phba->intr_type = INTx; intr_mode = 0; for (index = 0; index < phba->cfg_fcp_io_channel; index++) { phba->sli4_hba.fcp_eq_hdl[index].idx = index; phba->sli4_hba.fcp_eq_hdl[index].phba = phba; atomic_set(&phba->sli4_hba.fcp_eq_hdl[index]. fcp_eq_in_use, 1); } } } return intr_mode; } /** * lpfc_sli4_disable_intr - Disable device interrupt to SLI-4 device * @phba: pointer to lpfc hba data structure. * * This routine is invoked to disable device interrupt and disassociate * the driver's interrupt handler(s) from interrupt vector(s) to device * with SLI-4 interface spec. Depending on the interrupt mode, the driver * will release the interrupt vector(s) for the message signaled interrupt. **/ static void lpfc_sli4_disable_intr(struct lpfc_hba *phba) { /* Disable the currently initialized interrupt mode */ if (phba->intr_type == MSIX) lpfc_sli4_disable_msix(phba); else if (phba->intr_type == MSI) lpfc_sli4_disable_msi(phba); else if (phba->intr_type == INTx) free_irq(phba->pcidev->irq, phba); /* Reset interrupt management states */ phba->intr_type = NONE; phba->sli.slistat.sli_intr = 0; return; } /** * lpfc_unset_hba - Unset SLI3 hba device initialization * @phba: pointer to lpfc hba data structure. * * This routine is invoked to unset the HBA device initialization steps to * a device with SLI-3 interface spec. **/ static void lpfc_unset_hba(struct lpfc_hba *phba) { struct lpfc_vport *vport = phba->pport; struct Scsi_Host *shost = lpfc_shost_from_vport(vport); spin_lock_irq(shost->host_lock); vport->load_flag |= FC_UNLOADING; spin_unlock_irq(shost->host_lock); kfree(phba->vpi_bmask); kfree(phba->vpi_ids); lpfc_stop_hba_timers(phba); phba->pport->work_port_events = 0; lpfc_sli_hba_down(phba); lpfc_sli_brdrestart(phba); lpfc_sli_disable_intr(phba); return; } /** * lpfc_sli4_xri_exchange_busy_wait - Wait for device XRI exchange busy * @phba: Pointer to HBA context object. * * This function is called in the SLI4 code path to wait for completion * of device's XRIs exchange busy. It will check the XRI exchange busy * on outstanding FCP and ELS I/Os every 10ms for up to 10 seconds; after * that, it will check the XRI exchange busy on outstanding FCP and ELS * I/Os every 30 seconds, log error message, and wait forever. Only when * all XRI exchange busy complete, the driver unload shall proceed with * invoking the function reset ioctl mailbox command to the CNA and the * the rest of the driver unload resource release. **/ static void lpfc_sli4_xri_exchange_busy_wait(struct lpfc_hba *phba) { int wait_time = 0; int fcp_xri_cmpl = list_empty(&phba->sli4_hba.lpfc_abts_scsi_buf_list); int els_xri_cmpl = list_empty(&phba->sli4_hba.lpfc_abts_els_sgl_list); while (!fcp_xri_cmpl || !els_xri_cmpl) { if (wait_time > LPFC_XRI_EXCH_BUSY_WAIT_TMO) { if (!fcp_xri_cmpl) lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2877 FCP XRI exchange busy " "wait time: %d seconds.\n", wait_time/1000); if (!els_xri_cmpl) lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2878 ELS XRI exchange busy " "wait time: %d seconds.\n", wait_time/1000); msleep(LPFC_XRI_EXCH_BUSY_WAIT_T2); wait_time += LPFC_XRI_EXCH_BUSY_WAIT_T2; } else { msleep(LPFC_XRI_EXCH_BUSY_WAIT_T1); wait_time += LPFC_XRI_EXCH_BUSY_WAIT_T1; } fcp_xri_cmpl = list_empty(&phba->sli4_hba.lpfc_abts_scsi_buf_list); els_xri_cmpl = list_empty(&phba->sli4_hba.lpfc_abts_els_sgl_list); } } /** * lpfc_sli4_hba_unset - Unset the fcoe hba * @phba: Pointer to HBA context object. * * This function is called in the SLI4 code path to reset the HBA's FCoE * function. The caller is not required to hold any lock. This routine * issues PCI function reset mailbox command to reset the FCoE function. * At the end of the function, it calls lpfc_hba_down_post function to * free any pending commands. **/ static void lpfc_sli4_hba_unset(struct lpfc_hba *phba) { int wait_cnt = 0; LPFC_MBOXQ_t *mboxq; struct pci_dev *pdev = phba->pcidev; lpfc_stop_hba_timers(phba); phba->sli4_hba.intr_enable = 0; /* * Gracefully wait out the potential current outstanding asynchronous * mailbox command. */ /* First, block any pending async mailbox command from posted */ spin_lock_irq(&phba->hbalock); phba->sli.sli_flag |= LPFC_SLI_ASYNC_MBX_BLK; spin_unlock_irq(&phba->hbalock); /* Now, trying to wait it out if we can */ while (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) { msleep(10); if (++wait_cnt > LPFC_ACTIVE_MBOX_WAIT_CNT) break; } /* Forcefully release the outstanding mailbox command if timed out */ if (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) { spin_lock_irq(&phba->hbalock); mboxq = phba->sli.mbox_active; mboxq->u.mb.mbxStatus = MBX_NOT_FINISHED; __lpfc_mbox_cmpl_put(phba, mboxq); phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; phba->sli.mbox_active = NULL; spin_unlock_irq(&phba->hbalock); } /* Abort all iocbs associated with the hba */ lpfc_sli_hba_iocb_abort(phba); /* Wait for completion of device XRI exchange busy */ lpfc_sli4_xri_exchange_busy_wait(phba); /* Disable PCI subsystem interrupt */ lpfc_sli4_disable_intr(phba); /* Disable SR-IOV if enabled */ if (phba->cfg_sriov_nr_virtfn) pci_disable_sriov(pdev); /* Stop kthread signal shall trigger work_done one more time */ kthread_stop(phba->worker_thread); /* Reset SLI4 HBA FCoE function */ lpfc_pci_function_reset(phba); lpfc_sli4_queue_destroy(phba); /* Stop the SLI4 device port */ phba->pport->work_port_events = 0; } /** * lpfc_pc_sli4_params_get - Get the SLI4_PARAMS port capabilities. * @phba: Pointer to HBA context object. * @mboxq: Pointer to the mailboxq memory for the mailbox command response. * * This function is called in the SLI4 code path to read the port's * sli4 capabilities. * * This function may be be called from any context that can block-wait * for the completion. The expectation is that this routine is called * typically from probe_one or from the online routine. **/ int lpfc_pc_sli4_params_get(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) { int rc; struct lpfc_mqe *mqe; struct lpfc_pc_sli4_params *sli4_params; uint32_t mbox_tmo; rc = 0; mqe = &mboxq->u.mqe; /* Read the port's SLI4 Parameters port capabilities */ lpfc_pc_sli4_params(mboxq); if (!phba->sli4_hba.intr_enable) rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL); else { mbox_tmo = lpfc_mbox_tmo_val(phba, mboxq); rc = lpfc_sli_issue_mbox_wait(phba, mboxq, mbox_tmo); } if (unlikely(rc)) return 1; sli4_params = &phba->sli4_hba.pc_sli4_params; sli4_params->if_type = bf_get(if_type, &mqe->un.sli4_params); sli4_params->sli_rev = bf_get(sli_rev, &mqe->un.sli4_params); sli4_params->sli_family = bf_get(sli_family, &mqe->un.sli4_params); sli4_params->featurelevel_1 = bf_get(featurelevel_1, &mqe->un.sli4_params); sli4_params->featurelevel_2 = bf_get(featurelevel_2, &mqe->un.sli4_params); sli4_params->proto_types = mqe->un.sli4_params.word3; sli4_params->sge_supp_len = mqe->un.sli4_params.sge_supp_len; sli4_params->if_page_sz = bf_get(if_page_sz, &mqe->un.sli4_params); sli4_params->rq_db_window = bf_get(rq_db_window, &mqe->un.sli4_params); sli4_params->loopbk_scope = bf_get(loopbk_scope, &mqe->un.sli4_params); sli4_params->eq_pages_max = bf_get(eq_pages, &mqe->un.sli4_params); sli4_params->eqe_size = bf_get(eqe_size, &mqe->un.sli4_params); sli4_params->cq_pages_max = bf_get(cq_pages, &mqe->un.sli4_params); sli4_params->cqe_size = bf_get(cqe_size, &mqe->un.sli4_params); sli4_params->mq_pages_max = bf_get(mq_pages, &mqe->un.sli4_params); sli4_params->mqe_size = bf_get(mqe_size, &mqe->un.sli4_params); sli4_params->mq_elem_cnt = bf_get(mq_elem_cnt, &mqe->un.sli4_params); sli4_params->wq_pages_max = bf_get(wq_pages, &mqe->un.sli4_params); sli4_params->wqe_size = bf_get(wqe_size, &mqe->un.sli4_params); sli4_params->rq_pages_max = bf_get(rq_pages, &mqe->un.sli4_params); sli4_params->rqe_size = bf_get(rqe_size, &mqe->un.sli4_params); sli4_params->hdr_pages_max = bf_get(hdr_pages, &mqe->un.sli4_params); sli4_params->hdr_size = bf_get(hdr_size, &mqe->un.sli4_params); sli4_params->hdr_pp_align = bf_get(hdr_pp_align, &mqe->un.sli4_params); sli4_params->sgl_pages_max = bf_get(sgl_pages, &mqe->un.sli4_params); sli4_params->sgl_pp_align = bf_get(sgl_pp_align, &mqe->un.sli4_params); /* Make sure that sge_supp_len can be handled by the driver */ if (sli4_params->sge_supp_len > LPFC_MAX_SGE_SIZE) sli4_params->sge_supp_len = LPFC_MAX_SGE_SIZE; return rc; } /** * lpfc_get_sli4_parameters - Get the SLI4 Config PARAMETERS. * @phba: Pointer to HBA context object. * @mboxq: Pointer to the mailboxq memory for the mailbox command response. * * This function is called in the SLI4 code path to read the port's * sli4 capabilities. * * This function may be be called from any context that can block-wait * for the completion. The expectation is that this routine is called * typically from probe_one or from the online routine. **/ int lpfc_get_sli4_parameters(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) { int rc; struct lpfc_mqe *mqe = &mboxq->u.mqe; struct lpfc_pc_sli4_params *sli4_params; uint32_t mbox_tmo; int length; struct lpfc_sli4_parameters *mbx_sli4_parameters; /* * By default, the driver assumes the SLI4 port requires RPI * header postings. The SLI4_PARAM response will correct this * assumption. */ phba->sli4_hba.rpi_hdrs_in_use = 1; /* Read the port's SLI4 Config Parameters */ length = (sizeof(struct lpfc_mbx_get_sli4_parameters) - sizeof(struct lpfc_sli4_cfg_mhdr)); lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON, LPFC_MBOX_OPCODE_GET_SLI4_PARAMETERS, length, LPFC_SLI4_MBX_EMBED); if (!phba->sli4_hba.intr_enable) rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL); else { mbox_tmo = lpfc_mbox_tmo_val(phba, mboxq); rc = lpfc_sli_issue_mbox_wait(phba, mboxq, mbox_tmo); } if (unlikely(rc)) return rc; sli4_params = &phba->sli4_hba.pc_sli4_params; mbx_sli4_parameters = &mqe->un.get_sli4_parameters.sli4_parameters; sli4_params->if_type = bf_get(cfg_if_type, mbx_sli4_parameters); sli4_params->sli_rev = bf_get(cfg_sli_rev, mbx_sli4_parameters); sli4_params->sli_family = bf_get(cfg_sli_family, mbx_sli4_parameters); sli4_params->featurelevel_1 = bf_get(cfg_sli_hint_1, mbx_sli4_parameters); sli4_params->featurelevel_2 = bf_get(cfg_sli_hint_2, mbx_sli4_parameters); if (bf_get(cfg_phwq, mbx_sli4_parameters)) phba->sli3_options |= LPFC_SLI4_PHWQ_ENABLED; else phba->sli3_options &= ~LPFC_SLI4_PHWQ_ENABLED; sli4_params->sge_supp_len = mbx_sli4_parameters->sge_supp_len; sli4_params->loopbk_scope = bf_get(loopbk_scope, mbx_sli4_parameters); sli4_params->cqv = bf_get(cfg_cqv, mbx_sli4_parameters); sli4_params->mqv = bf_get(cfg_mqv, mbx_sli4_parameters); sli4_params->wqv = bf_get(cfg_wqv, mbx_sli4_parameters); sli4_params->rqv = bf_get(cfg_rqv, mbx_sli4_parameters); sli4_params->sgl_pages_max = bf_get(cfg_sgl_page_cnt, mbx_sli4_parameters); sli4_params->sgl_pp_align = bf_get(cfg_sgl_pp_align, mbx_sli4_parameters); phba->sli4_hba.extents_in_use = bf_get(cfg_ext, mbx_sli4_parameters); phba->sli4_hba.rpi_hdrs_in_use = bf_get(cfg_hdrr, mbx_sli4_parameters); /* Make sure that sge_supp_len can be handled by the driver */ if (sli4_params->sge_supp_len > LPFC_MAX_SGE_SIZE) sli4_params->sge_supp_len = LPFC_MAX_SGE_SIZE; return 0; } /** * lpfc_pci_probe_one_s3 - PCI probe func to reg SLI-3 device to PCI subsystem. * @pdev: pointer to PCI device * @pid: pointer to PCI device identifier * * This routine is to be called to attach a device with SLI-3 interface spec * to the PCI subsystem. When an Emulex HBA with SLI-3 interface spec is * presented on PCI bus, the kernel PCI subsystem looks at PCI device-specific * information of the device and driver to see if the driver state that it can * support this kind of device. If the match is successful, the driver core * invokes this routine. If this routine determines it can claim the HBA, it * does all the initialization that it needs to do to handle the HBA properly. * * Return code * 0 - driver can claim the device * negative value - driver can not claim the device **/ static int lpfc_pci_probe_one_s3(struct pci_dev *pdev, const struct pci_device_id *pid) { struct lpfc_hba *phba; struct lpfc_vport *vport = NULL; struct Scsi_Host *shost = NULL; int error; uint32_t cfg_mode, intr_mode; /* Allocate memory for HBA structure */ phba = lpfc_hba_alloc(pdev); if (!phba) return -ENOMEM; /* Perform generic PCI device enabling operation */ error = lpfc_enable_pci_dev(phba); if (error) goto out_free_phba; /* Set up SLI API function jump table for PCI-device group-0 HBAs */ error = lpfc_api_table_setup(phba, LPFC_PCI_DEV_LP); if (error) goto out_disable_pci_dev; /* Set up SLI-3 specific device PCI memory space */ error = lpfc_sli_pci_mem_setup(phba); if (error) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "1402 Failed to set up pci memory space.\n"); goto out_disable_pci_dev; } /* Set up phase-1 common device driver resources */ error = lpfc_setup_driver_resource_phase1(phba); if (error) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "1403 Failed to set up driver resource.\n"); goto out_unset_pci_mem_s3; } /* Set up SLI-3 specific device driver resources */ error = lpfc_sli_driver_resource_setup(phba); if (error) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "1404 Failed to set up driver resource.\n"); goto out_unset_pci_mem_s3; } /* Initialize and populate the iocb list per host */ error = lpfc_init_iocb_list(phba, LPFC_IOCB_LIST_CNT); if (error) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "1405 Failed to initialize iocb list.\n"); goto out_unset_driver_resource_s3; } /* Set up common device driver resources */ error = lpfc_setup_driver_resource_phase2(phba); if (error) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "1406 Failed to set up driver resource.\n"); goto out_free_iocb_list; } /* Get the default values for Model Name and Description */ lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc); /* Create SCSI host to the physical port */ error = lpfc_create_shost(phba); if (error) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "1407 Failed to create scsi host.\n"); goto out_unset_driver_resource; } /* Configure sysfs attributes */ vport = phba->pport; error = lpfc_alloc_sysfs_attr(vport); if (error) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "1476 Failed to allocate sysfs attr\n"); goto out_destroy_shost; } shost = lpfc_shost_from_vport(vport); /* save shost for error cleanup */ /* Now, trying to enable interrupt and bring up the device */ cfg_mode = phba->cfg_use_msi; while (true) { /* Put device to a known state before enabling interrupt */ lpfc_stop_port(phba); /* Configure and enable interrupt */ intr_mode = lpfc_sli_enable_intr(phba, cfg_mode); if (intr_mode == LPFC_INTR_ERROR) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0431 Failed to enable interrupt.\n"); error = -ENODEV; goto out_free_sysfs_attr; } /* SLI-3 HBA setup */ if (lpfc_sli_hba_setup(phba)) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "1477 Failed to set up hba\n"); error = -ENODEV; goto out_remove_device; } /* Wait 50ms for the interrupts of previous mailbox commands */ msleep(50); /* Check active interrupts on message signaled interrupts */ if (intr_mode == 0 || phba->sli.slistat.sli_intr > LPFC_MSIX_VECTORS) { /* Log the current active interrupt mode */ phba->intr_mode = intr_mode; lpfc_log_intr_mode(phba, intr_mode); break; } else { lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "0447 Configure interrupt mode (%d) " "failed active interrupt test.\n", intr_mode); /* Disable the current interrupt mode */ lpfc_sli_disable_intr(phba); /* Try next level of interrupt mode */ cfg_mode = --intr_mode; } } /* Perform post initialization setup */ lpfc_post_init_setup(phba); /* Check if there are static vports to be created. */ lpfc_create_static_vport(phba); return 0; out_remove_device: lpfc_unset_hba(phba); out_free_sysfs_attr: lpfc_free_sysfs_attr(vport); out_destroy_shost: lpfc_destroy_shost(phba); out_unset_driver_resource: lpfc_unset_driver_resource_phase2(phba); out_free_iocb_list: lpfc_free_iocb_list(phba); out_unset_driver_resource_s3: lpfc_sli_driver_resource_unset(phba); out_unset_pci_mem_s3: lpfc_sli_pci_mem_unset(phba); out_disable_pci_dev: lpfc_disable_pci_dev(phba); if (shost) scsi_host_put(shost); out_free_phba: lpfc_hba_free(phba); return error; } /** * lpfc_pci_remove_one_s3 - PCI func to unreg SLI-3 device from PCI subsystem. * @pdev: pointer to PCI device * * This routine is to be called to disattach a device with SLI-3 interface * spec from PCI subsystem. When an Emulex HBA with SLI-3 interface spec is * removed from PCI bus, it performs all the necessary cleanup for the HBA * device to be removed from the PCI subsystem properly. **/ static void lpfc_pci_remove_one_s3(struct pci_dev *pdev) { struct Scsi_Host *shost = pci_get_drvdata(pdev); struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; struct lpfc_vport **vports; struct lpfc_hba *phba = vport->phba; int i; int bars = pci_select_bars(pdev, IORESOURCE_MEM); spin_lock_irq(&phba->hbalock); vport->load_flag |= FC_UNLOADING; spin_unlock_irq(&phba->hbalock); lpfc_free_sysfs_attr(vport); /* Release all the vports against this physical port */ vports = lpfc_create_vport_work_array(phba); if (vports != NULL) for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { if (vports[i]->port_type == LPFC_PHYSICAL_PORT) continue; fc_vport_terminate(vports[i]->fc_vport); } lpfc_destroy_vport_work_array(phba, vports); /* Remove FC host and then SCSI host with the physical port */ fc_remove_host(shost); scsi_remove_host(shost); lpfc_cleanup(vport); /* * Bring down the SLI Layer. This step disable all interrupts, * clears the rings, discards all mailbox commands, and resets * the HBA. */ /* HBA interrupt will be disabled after this call */ lpfc_sli_hba_down(phba); /* Stop kthread signal shall trigger work_done one more time */ kthread_stop(phba->worker_thread); /* Final cleanup of txcmplq and reset the HBA */ lpfc_sli_brdrestart(phba); kfree(phba->vpi_bmask); kfree(phba->vpi_ids); lpfc_stop_hba_timers(phba); spin_lock_irq(&phba->hbalock); list_del_init(&vport->listentry); spin_unlock_irq(&phba->hbalock); lpfc_debugfs_terminate(vport); /* Disable SR-IOV if enabled */ if (phba->cfg_sriov_nr_virtfn) pci_disable_sriov(pdev); /* Disable interrupt */ lpfc_sli_disable_intr(phba); pci_set_drvdata(pdev, NULL); scsi_host_put(shost); /* * Call scsi_free before mem_free since scsi bufs are released to their * corresponding pools here. */ lpfc_scsi_free(phba); lpfc_mem_free_all(phba); dma_free_coherent(&pdev->dev, lpfc_sli_hbq_size(), phba->hbqslimp.virt, phba->hbqslimp.phys); /* Free resources associated with SLI2 interface */ dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE, phba->slim2p.virt, phba->slim2p.phys); /* unmap adapter SLIM and Control Registers */ iounmap(phba->ctrl_regs_memmap_p); iounmap(phba->slim_memmap_p); lpfc_hba_free(phba); pci_release_selected_regions(pdev, bars); pci_disable_device(pdev); } /** * lpfc_pci_suspend_one_s3 - PCI func to suspend SLI-3 device for power mgmnt * @pdev: pointer to PCI device * @msg: power management message * * This routine is to be called from the kernel's PCI subsystem to support * system Power Management (PM) to device with SLI-3 interface spec. When * PM invokes this method, it quiesces the device by stopping the driver's * worker thread for the device, turning off device's interrupt and DMA, * and bring the device offline. Note that as the driver implements the * minimum PM requirements to a power-aware driver's PM support for the * suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE, FREEZE) * to the suspend() method call will be treated as SUSPEND and the driver will * fully reinitialize its device during resume() method call, the driver will * set device to PCI_D3hot state in PCI config space instead of setting it * according to the @msg provided by the PM. * * Return code * 0 - driver suspended the device * Error otherwise **/ static int lpfc_pci_suspend_one_s3(struct pci_dev *pdev, pm_message_t msg) { struct Scsi_Host *shost = pci_get_drvdata(pdev); struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba; lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "0473 PCI device Power Management suspend.\n"); /* Bring down the device */ lpfc_offline_prep(phba, LPFC_MBX_WAIT); lpfc_offline(phba); kthread_stop(phba->worker_thread); /* Disable interrupt from device */ lpfc_sli_disable_intr(phba); /* Save device state to PCI config space */ pci_save_state(pdev); pci_set_power_state(pdev, PCI_D3hot); return 0; } /** * lpfc_pci_resume_one_s3 - PCI func to resume SLI-3 device for power mgmnt * @pdev: pointer to PCI device * * This routine is to be called from the kernel's PCI subsystem to support * system Power Management (PM) to device with SLI-3 interface spec. When PM * invokes this method, it restores the device's PCI config space state and * fully reinitializes the device and brings it online. Note that as the * driver implements the minimum PM requirements to a power-aware driver's * PM for suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE, * FREEZE) to the suspend() method call will be treated as SUSPEND and the * driver will fully reinitialize its device during resume() method call, * the device will be set to PCI_D0 directly in PCI config space before * restoring the state. * * Return code * 0 - driver suspended the device * Error otherwise **/ static int lpfc_pci_resume_one_s3(struct pci_dev *pdev) { struct Scsi_Host *shost = pci_get_drvdata(pdev); struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba; uint32_t intr_mode; int error; lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "0452 PCI device Power Management resume.\n"); /* Restore device state from PCI config space */ pci_set_power_state(pdev, PCI_D0); pci_restore_state(pdev); /* * As the new kernel behavior of pci_restore_state() API call clears * device saved_state flag, need to save the restored state again. */ pci_save_state(pdev); if (pdev->is_busmaster) pci_set_master(pdev); /* Startup the kernel thread for this host adapter. */ phba->worker_thread = kthread_run(lpfc_do_work, phba, "lpfc_worker_%d", phba->brd_no); if (IS_ERR(phba->worker_thread)) { error = PTR_ERR(phba->worker_thread); lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0434 PM resume failed to start worker " "thread: error=x%x.\n", error); return error; } /* Configure and enable interrupt */ intr_mode = lpfc_sli_enable_intr(phba, phba->intr_mode); if (intr_mode == LPFC_INTR_ERROR) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0430 PM resume Failed to enable interrupt\n"); return -EIO; } else phba->intr_mode = intr_mode; /* Restart HBA and bring it online */ lpfc_sli_brdrestart(phba); lpfc_online(phba); /* Log the current active interrupt mode */ lpfc_log_intr_mode(phba, phba->intr_mode); return 0; } /** * lpfc_sli_prep_dev_for_recover - Prepare SLI3 device for pci slot recover * @phba: pointer to lpfc hba data structure. * * This routine is called to prepare the SLI3 device for PCI slot recover. It * aborts all the outstanding SCSI I/Os to the pci device. **/ static void lpfc_sli_prep_dev_for_recover(struct lpfc_hba *phba) { struct lpfc_sli *psli = &phba->sli; struct lpfc_sli_ring *pring; lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2723 PCI channel I/O abort preparing for recovery\n"); /* * There may be errored I/Os through HBA, abort all I/Os on txcmplq * and let the SCSI mid-layer to retry them to recover. */ pring = &psli->ring[psli->fcp_ring]; lpfc_sli_abort_iocb_ring(phba, pring); } /** * lpfc_sli_prep_dev_for_reset - Prepare SLI3 device for pci slot reset * @phba: pointer to lpfc hba data structure. * * This routine is called to prepare the SLI3 device for PCI slot reset. It * disables the device interrupt and pci device, and aborts the internal FCP * pending I/Os. **/ static void lpfc_sli_prep_dev_for_reset(struct lpfc_hba *phba) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2710 PCI channel disable preparing for reset\n"); /* Block any management I/Os to the device */ lpfc_block_mgmt_io(phba, LPFC_MBX_WAIT); /* Block all SCSI devices' I/Os on the host */ lpfc_scsi_dev_block(phba); /* Flush all driver's outstanding SCSI I/Os as we are to reset */ lpfc_sli_flush_fcp_rings(phba); /* stop all timers */ lpfc_stop_hba_timers(phba); /* Disable interrupt and pci device */ lpfc_sli_disable_intr(phba); pci_disable_device(phba->pcidev); } /** * lpfc_sli_prep_dev_for_perm_failure - Prepare SLI3 dev for pci slot disable * @phba: pointer to lpfc hba data structure. * * This routine is called to prepare the SLI3 device for PCI slot permanently * disabling. It blocks the SCSI transport layer traffic and flushes the FCP * pending I/Os. **/ static void lpfc_sli_prep_dev_for_perm_failure(struct lpfc_hba *phba) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2711 PCI channel permanent disable for failure\n"); /* Block all SCSI devices' I/Os on the host */ lpfc_scsi_dev_block(phba); /* stop all timers */ lpfc_stop_hba_timers(phba); /* Clean up all driver's outstanding SCSI I/Os */ lpfc_sli_flush_fcp_rings(phba); } /** * lpfc_io_error_detected_s3 - Method for handling SLI-3 device PCI I/O error * @pdev: pointer to PCI device. * @state: the current PCI connection state. * * This routine is called from the PCI subsystem for I/O error handling to * device with SLI-3 interface spec. This function is called by the PCI * subsystem after a PCI bus error affecting this device has been detected. * When this function is invoked, it will need to stop all the I/Os and * interrupt(s) to the device. Once that is done, it will return * PCI_ERS_RESULT_NEED_RESET for the PCI subsystem to perform proper recovery * as desired. * * Return codes * PCI_ERS_RESULT_CAN_RECOVER - can be recovered with reset_link * PCI_ERS_RESULT_NEED_RESET - need to reset before recovery * PCI_ERS_RESULT_DISCONNECT - device could not be recovered **/ static pci_ers_result_t lpfc_io_error_detected_s3(struct pci_dev *pdev, pci_channel_state_t state) { struct Scsi_Host *shost = pci_get_drvdata(pdev); struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba; switch (state) { case pci_channel_io_normal: /* Non-fatal error, prepare for recovery */ lpfc_sli_prep_dev_for_recover(phba); return PCI_ERS_RESULT_CAN_RECOVER; case pci_channel_io_frozen: /* Fatal error, prepare for slot reset */ lpfc_sli_prep_dev_for_reset(phba); return PCI_ERS_RESULT_NEED_RESET; case pci_channel_io_perm_failure: /* Permanent failure, prepare for device down */ lpfc_sli_prep_dev_for_perm_failure(phba); return PCI_ERS_RESULT_DISCONNECT; default: /* Unknown state, prepare and request slot reset */ lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0472 Unknown PCI error state: x%x\n", state); lpfc_sli_prep_dev_for_reset(phba); return PCI_ERS_RESULT_NEED_RESET; } } /** * lpfc_io_slot_reset_s3 - Method for restarting PCI SLI-3 device from scratch. * @pdev: pointer to PCI device. * * This routine is called from the PCI subsystem for error handling to * device with SLI-3 interface spec. This is called after PCI bus has been * reset to restart the PCI card from scratch, as if from a cold-boot. * During the PCI subsystem error recovery, after driver returns * PCI_ERS_RESULT_NEED_RESET, the PCI subsystem will perform proper error * recovery and then call this routine before calling the .resume method * to recover the device. This function will initialize the HBA device, * enable the interrupt, but it will just put the HBA to offline state * without passing any I/O traffic. * * Return codes * PCI_ERS_RESULT_RECOVERED - the device has been recovered * PCI_ERS_RESULT_DISCONNECT - device could not be recovered */ static pci_ers_result_t lpfc_io_slot_reset_s3(struct pci_dev *pdev) { struct Scsi_Host *shost = pci_get_drvdata(pdev); struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba; struct lpfc_sli *psli = &phba->sli; uint32_t intr_mode; dev_printk(KERN_INFO, &pdev->dev, "recovering from a slot reset.\n"); if (pci_enable_device_mem(pdev)) { printk(KERN_ERR "lpfc: Cannot re-enable " "PCI device after reset.\n"); return PCI_ERS_RESULT_DISCONNECT; } pci_restore_state(pdev); /* * As the new kernel behavior of pci_restore_state() API call clears * device saved_state flag, need to save the restored state again. */ pci_save_state(pdev); if (pdev->is_busmaster) pci_set_master(pdev); spin_lock_irq(&phba->hbalock); psli->sli_flag &= ~LPFC_SLI_ACTIVE; spin_unlock_irq(&phba->hbalock); /* Configure and enable interrupt */ intr_mode = lpfc_sli_enable_intr(phba, phba->intr_mode); if (intr_mode == LPFC_INTR_ERROR) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0427 Cannot re-enable interrupt after " "slot reset.\n"); return PCI_ERS_RESULT_DISCONNECT; } else phba->intr_mode = intr_mode; /* Take device offline, it will perform cleanup */ lpfc_offline_prep(phba, LPFC_MBX_WAIT); lpfc_offline(phba); lpfc_sli_brdrestart(phba); /* Log the current active interrupt mode */ lpfc_log_intr_mode(phba, phba->intr_mode); return PCI_ERS_RESULT_RECOVERED; } /** * lpfc_io_resume_s3 - Method for resuming PCI I/O operation on SLI-3 device. * @pdev: pointer to PCI device * * This routine is called from the PCI subsystem for error handling to device * with SLI-3 interface spec. It is called when kernel error recovery tells * the lpfc driver that it is ok to resume normal PCI operation after PCI bus * error recovery. After this call, traffic can start to flow from this device * again. */ static void lpfc_io_resume_s3(struct pci_dev *pdev) { struct Scsi_Host *shost = pci_get_drvdata(pdev); struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba; /* Bring device online, it will be no-op for non-fatal error resume */ lpfc_online(phba); /* Clean up Advanced Error Reporting (AER) if needed */ if (phba->hba_flag & HBA_AER_ENABLED) pci_cleanup_aer_uncorrect_error_status(pdev); } /** * lpfc_sli4_get_els_iocb_cnt - Calculate the # of ELS IOCBs to reserve * @phba: pointer to lpfc hba data structure. * * returns the number of ELS/CT IOCBs to reserve **/ int lpfc_sli4_get_els_iocb_cnt(struct lpfc_hba *phba) { int max_xri = phba->sli4_hba.max_cfg_param.max_xri; if (phba->sli_rev == LPFC_SLI_REV4) { if (max_xri <= 100) return 10; else if (max_xri <= 256) return 25; else if (max_xri <= 512) return 50; else if (max_xri <= 1024) return 100; else if (max_xri <= 1536) return 150; else if (max_xri <= 2048) return 200; else return 250; } else return 0; } /** * lpfc_write_firmware - attempt to write a firmware image to the port * @fw: pointer to firmware image returned from request_firmware. * @phba: pointer to lpfc hba data structure. * **/ static void lpfc_write_firmware(const struct firmware *fw, void *context) { struct lpfc_hba *phba = (struct lpfc_hba *)context; char fwrev[FW_REV_STR_SIZE]; struct lpfc_grp_hdr *image; struct list_head dma_buffer_list; int i, rc = 0; struct lpfc_dmabuf *dmabuf, *next; uint32_t offset = 0, temp_offset = 0; /* It can be null in no-wait mode, sanity check */ if (!fw) { rc = -ENXIO; goto out; } image = (struct lpfc_grp_hdr *)fw->data; INIT_LIST_HEAD(&dma_buffer_list); if ((be32_to_cpu(image->magic_number) != LPFC_GROUP_OJECT_MAGIC_NUM) || (bf_get_be32(lpfc_grp_hdr_file_type, image) != LPFC_FILE_TYPE_GROUP) || (bf_get_be32(lpfc_grp_hdr_id, image) != LPFC_FILE_ID_GROUP) || (be32_to_cpu(image->size) != fw->size)) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "3022 Invalid FW image found. " "Magic:%x Type:%x ID:%x\n", be32_to_cpu(image->magic_number), bf_get_be32(lpfc_grp_hdr_file_type, image), bf_get_be32(lpfc_grp_hdr_id, image)); rc = -EINVAL; goto release_out; } lpfc_decode_firmware_rev(phba, fwrev, 1); if (strncmp(fwrev, image->revision, strnlen(image->revision, 16))) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "3023 Updating Firmware, Current Version:%s " "New Version:%s\n", fwrev, image->revision); for (i = 0; i < LPFC_MBX_WR_CONFIG_MAX_BDE; i++) { dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); if (!dmabuf) { rc = -ENOMEM; goto release_out; } dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev, SLI4_PAGE_SIZE, &dmabuf->phys, GFP_KERNEL); if (!dmabuf->virt) { kfree(dmabuf); rc = -ENOMEM; goto release_out; } list_add_tail(&dmabuf->list, &dma_buffer_list); } while (offset < fw->size) { temp_offset = offset; list_for_each_entry(dmabuf, &dma_buffer_list, list) { if (temp_offset + SLI4_PAGE_SIZE > fw->size) { memcpy(dmabuf->virt, fw->data + temp_offset, fw->size - temp_offset); temp_offset = fw->size; break; } memcpy(dmabuf->virt, fw->data + temp_offset, SLI4_PAGE_SIZE); temp_offset += SLI4_PAGE_SIZE; } rc = lpfc_wr_object(phba, &dma_buffer_list, (fw->size - offset), &offset); if (rc) goto release_out; } rc = offset; } release_out: list_for_each_entry_safe(dmabuf, next, &dma_buffer_list, list) { list_del(&dmabuf->list); dma_free_coherent(&phba->pcidev->dev, SLI4_PAGE_SIZE, dmabuf->virt, dmabuf->phys); kfree(dmabuf); } release_firmware(fw); out: lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "3024 Firmware update done: %d.\n", rc); return; } /** * lpfc_sli4_request_firmware_update - Request linux generic firmware upgrade * @phba: pointer to lpfc hba data structure. * * This routine is called to perform Linux generic firmware upgrade on device * that supports such feature. **/ int lpfc_sli4_request_firmware_update(struct lpfc_hba *phba, uint8_t fw_upgrade) { uint8_t file_name[ELX_MODEL_NAME_SIZE]; int ret; const struct firmware *fw; /* Only supported on SLI4 interface type 2 for now */ if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) != LPFC_SLI_INTF_IF_TYPE_2) return -EPERM; snprintf(file_name, ELX_MODEL_NAME_SIZE, "%s.grp", phba->ModelName); if (fw_upgrade == INT_FW_UPGRADE) { ret = request_firmware_nowait(THIS_MODULE, FW_ACTION_HOTPLUG, file_name, &phba->pcidev->dev, GFP_KERNEL, (void *)phba, lpfc_write_firmware); } else if (fw_upgrade == RUN_FW_UPGRADE) { ret = request_firmware(&fw, file_name, &phba->pcidev->dev); if (!ret) lpfc_write_firmware(fw, (void *)phba); } else { ret = -EINVAL; } return ret; } /** * lpfc_pci_probe_one_s4 - PCI probe func to reg SLI-4 device to PCI subsys * @pdev: pointer to PCI device * @pid: pointer to PCI device identifier * * This routine is called from the kernel's PCI subsystem to device with * SLI-4 interface spec. When an Emulex HBA with SLI-4 interface spec is * presented on PCI bus, the kernel PCI subsystem looks at PCI device-specific * information of the device and driver to see if the driver state that it * can support this kind of device. If the match is successful, the driver * core invokes this routine. If this routine determines it can claim the HBA, * it does all the initialization that it needs to do to handle the HBA * properly. * * Return code * 0 - driver can claim the device * negative value - driver can not claim the device **/ static int lpfc_pci_probe_one_s4(struct pci_dev *pdev, const struct pci_device_id *pid) { struct lpfc_hba *phba; struct lpfc_vport *vport = NULL; struct Scsi_Host *shost = NULL; int error, ret; uint32_t cfg_mode, intr_mode; int adjusted_fcp_io_channel; /* Allocate memory for HBA structure */ phba = lpfc_hba_alloc(pdev); if (!phba) return -ENOMEM; /* Perform generic PCI device enabling operation */ error = lpfc_enable_pci_dev(phba); if (error) goto out_free_phba; /* Set up SLI API function jump table for PCI-device group-1 HBAs */ error = lpfc_api_table_setup(phba, LPFC_PCI_DEV_OC); if (error) goto out_disable_pci_dev; /* Set up SLI-4 specific device PCI memory space */ error = lpfc_sli4_pci_mem_setup(phba); if (error) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "1410 Failed to set up pci memory space.\n"); goto out_disable_pci_dev; } /* Set up phase-1 common device driver resources */ error = lpfc_setup_driver_resource_phase1(phba); if (error) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "1411 Failed to set up driver resource.\n"); goto out_unset_pci_mem_s4; } /* Set up SLI-4 Specific device driver resources */ error = lpfc_sli4_driver_resource_setup(phba); if (error) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "1412 Failed to set up driver resource.\n"); goto out_unset_pci_mem_s4; } /* Initialize and populate the iocb list per host */ lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "2821 initialize iocb list %d.\n", phba->cfg_iocb_cnt*1024); error = lpfc_init_iocb_list(phba, phba->cfg_iocb_cnt*1024); if (error) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "1413 Failed to initialize iocb list.\n"); goto out_unset_driver_resource_s4; } INIT_LIST_HEAD(&phba->active_rrq_list); INIT_LIST_HEAD(&phba->fcf.fcf_pri_list); /* Set up common device driver resources */ error = lpfc_setup_driver_resource_phase2(phba); if (error) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "1414 Failed to set up driver resource.\n"); goto out_free_iocb_list; } /* Get the default values for Model Name and Description */ lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc); /* Create SCSI host to the physical port */ error = lpfc_create_shost(phba); if (error) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "1415 Failed to create scsi host.\n"); goto out_unset_driver_resource; } /* Configure sysfs attributes */ vport = phba->pport; error = lpfc_alloc_sysfs_attr(vport); if (error) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "1416 Failed to allocate sysfs attr\n"); goto out_destroy_shost; } shost = lpfc_shost_from_vport(vport); /* save shost for error cleanup */ /* Now, trying to enable interrupt and bring up the device */ cfg_mode = phba->cfg_use_msi; /* Put device to a known state before enabling interrupt */ lpfc_stop_port(phba); /* Configure and enable interrupt */ intr_mode = lpfc_sli4_enable_intr(phba, cfg_mode); if (intr_mode == LPFC_INTR_ERROR) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0426 Failed to enable interrupt.\n"); error = -ENODEV; goto out_free_sysfs_attr; } /* Default to single EQ for non-MSI-X */ if (phba->intr_type != MSIX) adjusted_fcp_io_channel = 1; else adjusted_fcp_io_channel = phba->cfg_fcp_io_channel; phba->cfg_fcp_io_channel = adjusted_fcp_io_channel; /* Set up SLI-4 HBA */ if (lpfc_sli4_hba_setup(phba)) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "1421 Failed to set up hba\n"); error = -ENODEV; goto out_disable_intr; } /* Log the current active interrupt mode */ phba->intr_mode = intr_mode; lpfc_log_intr_mode(phba, intr_mode); /* Perform post initialization setup */ lpfc_post_init_setup(phba); /* check for firmware upgrade or downgrade */ if (phba->cfg_request_firmware_upgrade) ret = lpfc_sli4_request_firmware_update(phba, INT_FW_UPGRADE); /* Check if there are static vports to be created. */ lpfc_create_static_vport(phba); return 0; out_disable_intr: lpfc_sli4_disable_intr(phba); out_free_sysfs_attr: lpfc_free_sysfs_attr(vport); out_destroy_shost: lpfc_destroy_shost(phba); out_unset_driver_resource: lpfc_unset_driver_resource_phase2(phba); out_free_iocb_list: lpfc_free_iocb_list(phba); out_unset_driver_resource_s4: lpfc_sli4_driver_resource_unset(phba); out_unset_pci_mem_s4: lpfc_sli4_pci_mem_unset(phba); out_disable_pci_dev: lpfc_disable_pci_dev(phba); if (shost) scsi_host_put(shost); out_free_phba: lpfc_hba_free(phba); return error; } /** * lpfc_pci_remove_one_s4 - PCI func to unreg SLI-4 device from PCI subsystem * @pdev: pointer to PCI device * * This routine is called from the kernel's PCI subsystem to device with * SLI-4 interface spec. When an Emulex HBA with SLI-4 interface spec is * removed from PCI bus, it performs all the necessary cleanup for the HBA * device to be removed from the PCI subsystem properly. **/ static void lpfc_pci_remove_one_s4(struct pci_dev *pdev) { struct Scsi_Host *shost = pci_get_drvdata(pdev); struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; struct lpfc_vport **vports; struct lpfc_hba *phba = vport->phba; int i; /* Mark the device unloading flag */ spin_lock_irq(&phba->hbalock); vport->load_flag |= FC_UNLOADING; spin_unlock_irq(&phba->hbalock); /* Free the HBA sysfs attributes */ lpfc_free_sysfs_attr(vport); /* Release all the vports against this physical port */ vports = lpfc_create_vport_work_array(phba); if (vports != NULL) for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { if (vports[i]->port_type == LPFC_PHYSICAL_PORT) continue; fc_vport_terminate(vports[i]->fc_vport); } lpfc_destroy_vport_work_array(phba, vports); /* Remove FC host and then SCSI host with the physical port */ fc_remove_host(shost); scsi_remove_host(shost); /* Perform cleanup on the physical port */ lpfc_cleanup(vport); /* * Bring down the SLI Layer. This step disables all interrupts, * clears the rings, discards all mailbox commands, and resets * the HBA FCoE function. */ lpfc_debugfs_terminate(vport); lpfc_sli4_hba_unset(phba); spin_lock_irq(&phba->hbalock); list_del_init(&vport->listentry); spin_unlock_irq(&phba->hbalock); /* Perform scsi free before driver resource_unset since scsi * buffers are released to their corresponding pools here. */ lpfc_scsi_free(phba); lpfc_sli4_driver_resource_unset(phba); /* Unmap adapter Control and Doorbell registers */ lpfc_sli4_pci_mem_unset(phba); /* Release PCI resources and disable device's PCI function */ scsi_host_put(shost); lpfc_disable_pci_dev(phba); /* Finally, free the driver's device data structure */ lpfc_hba_free(phba); return; } /** * lpfc_pci_suspend_one_s4 - PCI func to suspend SLI-4 device for power mgmnt * @pdev: pointer to PCI device * @msg: power management message * * This routine is called from the kernel's PCI subsystem to support system * Power Management (PM) to device with SLI-4 interface spec. When PM invokes * this method, it quiesces the device by stopping the driver's worker * thread for the device, turning off device's interrupt and DMA, and bring * the device offline. Note that as the driver implements the minimum PM * requirements to a power-aware driver's PM support for suspend/resume -- all * the possible PM messages (SUSPEND, HIBERNATE, FREEZE) to the suspend() * method call will be treated as SUSPEND and the driver will fully * reinitialize its device during resume() method call, the driver will set * device to PCI_D3hot state in PCI config space instead of setting it * according to the @msg provided by the PM. * * Return code * 0 - driver suspended the device * Error otherwise **/ static int lpfc_pci_suspend_one_s4(struct pci_dev *pdev, pm_message_t msg) { struct Scsi_Host *shost = pci_get_drvdata(pdev); struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba; lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "2843 PCI device Power Management suspend.\n"); /* Bring down the device */ lpfc_offline_prep(phba, LPFC_MBX_WAIT); lpfc_offline(phba); kthread_stop(phba->worker_thread); /* Disable interrupt from device */ lpfc_sli4_disable_intr(phba); lpfc_sli4_queue_destroy(phba); /* Save device state to PCI config space */ pci_save_state(pdev); pci_set_power_state(pdev, PCI_D3hot); return 0; } /** * lpfc_pci_resume_one_s4 - PCI func to resume SLI-4 device for power mgmnt * @pdev: pointer to PCI device * * This routine is called from the kernel's PCI subsystem to support system * Power Management (PM) to device with SLI-4 interface spac. When PM invokes * this method, it restores the device's PCI config space state and fully * reinitializes the device and brings it online. Note that as the driver * implements the minimum PM requirements to a power-aware driver's PM for * suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE, FREEZE) * to the suspend() method call will be treated as SUSPEND and the driver * will fully reinitialize its device during resume() method call, the device * will be set to PCI_D0 directly in PCI config space before restoring the * state. * * Return code * 0 - driver suspended the device * Error otherwise **/ static int lpfc_pci_resume_one_s4(struct pci_dev *pdev) { struct Scsi_Host *shost = pci_get_drvdata(pdev); struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba; uint32_t intr_mode; int error; lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "0292 PCI device Power Management resume.\n"); /* Restore device state from PCI config space */ pci_set_power_state(pdev, PCI_D0); pci_restore_state(pdev); /* * As the new kernel behavior of pci_restore_state() API call clears * device saved_state flag, need to save the restored state again. */ pci_save_state(pdev); if (pdev->is_busmaster) pci_set_master(pdev); /* Startup the kernel thread for this host adapter. */ phba->worker_thread = kthread_run(lpfc_do_work, phba, "lpfc_worker_%d", phba->brd_no); if (IS_ERR(phba->worker_thread)) { error = PTR_ERR(phba->worker_thread); lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0293 PM resume failed to start worker " "thread: error=x%x.\n", error); return error; } /* Configure and enable interrupt */ intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode); if (intr_mode == LPFC_INTR_ERROR) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0294 PM resume Failed to enable interrupt\n"); return -EIO; } else phba->intr_mode = intr_mode; /* Restart HBA and bring it online */ lpfc_sli_brdrestart(phba); lpfc_online(phba); /* Log the current active interrupt mode */ lpfc_log_intr_mode(phba, phba->intr_mode); return 0; } /** * lpfc_sli4_prep_dev_for_recover - Prepare SLI4 device for pci slot recover * @phba: pointer to lpfc hba data structure. * * This routine is called to prepare the SLI4 device for PCI slot recover. It * aborts all the outstanding SCSI I/Os to the pci device. **/ static void lpfc_sli4_prep_dev_for_recover(struct lpfc_hba *phba) { struct lpfc_sli *psli = &phba->sli; struct lpfc_sli_ring *pring; lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2828 PCI channel I/O abort preparing for recovery\n"); /* * There may be errored I/Os through HBA, abort all I/Os on txcmplq * and let the SCSI mid-layer to retry them to recover. */ pring = &psli->ring[psli->fcp_ring]; lpfc_sli_abort_iocb_ring(phba, pring); } /** * lpfc_sli4_prep_dev_for_reset - Prepare SLI4 device for pci slot reset * @phba: pointer to lpfc hba data structure. * * This routine is called to prepare the SLI4 device for PCI slot reset. It * disables the device interrupt and pci device, and aborts the internal FCP * pending I/Os. **/ static void lpfc_sli4_prep_dev_for_reset(struct lpfc_hba *phba) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2826 PCI channel disable preparing for reset\n"); /* Block any management I/Os to the device */ lpfc_block_mgmt_io(phba, LPFC_MBX_NO_WAIT); /* Block all SCSI devices' I/Os on the host */ lpfc_scsi_dev_block(phba); /* Flush all driver's outstanding SCSI I/Os as we are to reset */ lpfc_sli_flush_fcp_rings(phba); /* stop all timers */ lpfc_stop_hba_timers(phba); /* Disable interrupt and pci device */ lpfc_sli4_disable_intr(phba); lpfc_sli4_queue_destroy(phba); pci_disable_device(phba->pcidev); } /** * lpfc_sli4_prep_dev_for_perm_failure - Prepare SLI4 dev for pci slot disable * @phba: pointer to lpfc hba data structure. * * This routine is called to prepare the SLI4 device for PCI slot permanently * disabling. It blocks the SCSI transport layer traffic and flushes the FCP * pending I/Os. **/ static void lpfc_sli4_prep_dev_for_perm_failure(struct lpfc_hba *phba) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2827 PCI channel permanent disable for failure\n"); /* Block all SCSI devices' I/Os on the host */ lpfc_scsi_dev_block(phba); /* stop all timers */ lpfc_stop_hba_timers(phba); /* Clean up all driver's outstanding SCSI I/Os */ lpfc_sli_flush_fcp_rings(phba); } /** * lpfc_io_error_detected_s4 - Method for handling PCI I/O error to SLI-4 device * @pdev: pointer to PCI device. * @state: the current PCI connection state. * * This routine is called from the PCI subsystem for error handling to device * with SLI-4 interface spec. This function is called by the PCI subsystem * after a PCI bus error affecting this device has been detected. When this * function is invoked, it will need to stop all the I/Os and interrupt(s) * to the device. Once that is done, it will return PCI_ERS_RESULT_NEED_RESET * for the PCI subsystem to perform proper recovery as desired. * * Return codes * PCI_ERS_RESULT_NEED_RESET - need to reset before recovery * PCI_ERS_RESULT_DISCONNECT - device could not be recovered **/ static pci_ers_result_t lpfc_io_error_detected_s4(struct pci_dev *pdev, pci_channel_state_t state) { struct Scsi_Host *shost = pci_get_drvdata(pdev); struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba; switch (state) { case pci_channel_io_normal: /* Non-fatal error, prepare for recovery */ lpfc_sli4_prep_dev_for_recover(phba); return PCI_ERS_RESULT_CAN_RECOVER; case pci_channel_io_frozen: /* Fatal error, prepare for slot reset */ lpfc_sli4_prep_dev_for_reset(phba); return PCI_ERS_RESULT_NEED_RESET; case pci_channel_io_perm_failure: /* Permanent failure, prepare for device down */ lpfc_sli4_prep_dev_for_perm_failure(phba); return PCI_ERS_RESULT_DISCONNECT; default: /* Unknown state, prepare and request slot reset */ lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2825 Unknown PCI error state: x%x\n", state); lpfc_sli4_prep_dev_for_reset(phba); return PCI_ERS_RESULT_NEED_RESET; } } /** * lpfc_io_slot_reset_s4 - Method for restart PCI SLI-4 device from scratch * @pdev: pointer to PCI device. * * This routine is called from the PCI subsystem for error handling to device * with SLI-4 interface spec. It is called after PCI bus has been reset to * restart the PCI card from scratch, as if from a cold-boot. During the * PCI subsystem error recovery, after the driver returns * PCI_ERS_RESULT_NEED_RESET, the PCI subsystem will perform proper error * recovery and then call this routine before calling the .resume method to * recover the device. This function will initialize the HBA device, enable * the interrupt, but it will just put the HBA to offline state without * passing any I/O traffic. * * Return codes * PCI_ERS_RESULT_RECOVERED - the device has been recovered * PCI_ERS_RESULT_DISCONNECT - device could not be recovered */ static pci_ers_result_t lpfc_io_slot_reset_s4(struct pci_dev *pdev) { struct Scsi_Host *shost = pci_get_drvdata(pdev); struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba; struct lpfc_sli *psli = &phba->sli; uint32_t intr_mode; dev_printk(KERN_INFO, &pdev->dev, "recovering from a slot reset.\n"); if (pci_enable_device_mem(pdev)) { printk(KERN_ERR "lpfc: Cannot re-enable " "PCI device after reset.\n"); return PCI_ERS_RESULT_DISCONNECT; } pci_restore_state(pdev); /* * As the new kernel behavior of pci_restore_state() API call clears * device saved_state flag, need to save the restored state again. */ pci_save_state(pdev); if (pdev->is_busmaster) pci_set_master(pdev); spin_lock_irq(&phba->hbalock); psli->sli_flag &= ~LPFC_SLI_ACTIVE; spin_unlock_irq(&phba->hbalock); /* Configure and enable interrupt */ intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode); if (intr_mode == LPFC_INTR_ERROR) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2824 Cannot re-enable interrupt after " "slot reset.\n"); return PCI_ERS_RESULT_DISCONNECT; } else phba->intr_mode = intr_mode; /* Log the current active interrupt mode */ lpfc_log_intr_mode(phba, phba->intr_mode); return PCI_ERS_RESULT_RECOVERED; } /** * lpfc_io_resume_s4 - Method for resuming PCI I/O operation to SLI-4 device * @pdev: pointer to PCI device * * This routine is called from the PCI subsystem for error handling to device * with SLI-4 interface spec. It is called when kernel error recovery tells * the lpfc driver that it is ok to resume normal PCI operation after PCI bus * error recovery. After this call, traffic can start to flow from this device * again. **/ static void lpfc_io_resume_s4(struct pci_dev *pdev) { struct Scsi_Host *shost = pci_get_drvdata(pdev); struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba; /* * In case of slot reset, as function reset is performed through * mailbox command which needs DMA to be enabled, this operation * has to be moved to the io resume phase. Taking device offline * will perform the necessary cleanup. */ if (!(phba->sli.sli_flag & LPFC_SLI_ACTIVE)) { /* Perform device reset */ lpfc_offline_prep(phba, LPFC_MBX_WAIT); lpfc_offline(phba); lpfc_sli_brdrestart(phba); /* Bring the device back online */ lpfc_online(phba); } /* Clean up Advanced Error Reporting (AER) if needed */ if (phba->hba_flag & HBA_AER_ENABLED) pci_cleanup_aer_uncorrect_error_status(pdev); } /** * lpfc_pci_probe_one - lpfc PCI probe func to reg dev to PCI subsystem * @pdev: pointer to PCI device * @pid: pointer to PCI device identifier * * This routine is to be registered to the kernel's PCI subsystem. When an * Emulex HBA device is presented on PCI bus, the kernel PCI subsystem looks * at PCI device-specific information of the device and driver to see if the * driver state that it can support this kind of device. If the match is * successful, the driver core invokes this routine. This routine dispatches * the action to the proper SLI-3 or SLI-4 device probing routine, which will * do all the initialization that it needs to do to handle the HBA device * properly. * * Return code * 0 - driver can claim the device * negative value - driver can not claim the device **/ static int lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid) { int rc; struct lpfc_sli_intf intf; if (pci_read_config_dword(pdev, LPFC_SLI_INTF, &intf.word0)) return -ENODEV; if ((bf_get(lpfc_sli_intf_valid, &intf) == LPFC_SLI_INTF_VALID) && (bf_get(lpfc_sli_intf_slirev, &intf) == LPFC_SLI_INTF_REV_SLI4)) rc = lpfc_pci_probe_one_s4(pdev, pid); else rc = lpfc_pci_probe_one_s3(pdev, pid); return rc; } /** * lpfc_pci_remove_one - lpfc PCI func to unreg dev from PCI subsystem * @pdev: pointer to PCI device * * This routine is to be registered to the kernel's PCI subsystem. When an * Emulex HBA is removed from PCI bus, the driver core invokes this routine. * This routine dispatches the action to the proper SLI-3 or SLI-4 device * remove routine, which will perform all the necessary cleanup for the * device to be removed from the PCI subsystem properly. **/ static void lpfc_pci_remove_one(struct pci_dev *pdev) { struct Scsi_Host *shost = pci_get_drvdata(pdev); struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba; switch (phba->pci_dev_grp) { case LPFC_PCI_DEV_LP: lpfc_pci_remove_one_s3(pdev); break; case LPFC_PCI_DEV_OC: lpfc_pci_remove_one_s4(pdev); break; default: lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "1424 Invalid PCI device group: 0x%x\n", phba->pci_dev_grp); break; } return; } /** * lpfc_pci_suspend_one - lpfc PCI func to suspend dev for power management * @pdev: pointer to PCI device * @msg: power management message * * This routine is to be registered to the kernel's PCI subsystem to support * system Power Management (PM). When PM invokes this method, it dispatches * the action to the proper SLI-3 or SLI-4 device suspend routine, which will * suspend the device. * * Return code * 0 - driver suspended the device * Error otherwise **/ static int lpfc_pci_suspend_one(struct pci_dev *pdev, pm_message_t msg) { struct Scsi_Host *shost = pci_get_drvdata(pdev); struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba; int rc = -ENODEV; switch (phba->pci_dev_grp) { case LPFC_PCI_DEV_LP: rc = lpfc_pci_suspend_one_s3(pdev, msg); break; case LPFC_PCI_DEV_OC: rc = lpfc_pci_suspend_one_s4(pdev, msg); break; default: lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "1425 Invalid PCI device group: 0x%x\n", phba->pci_dev_grp); break; } return rc; } /** * lpfc_pci_resume_one - lpfc PCI func to resume dev for power management * @pdev: pointer to PCI device * * This routine is to be registered to the kernel's PCI subsystem to support * system Power Management (PM). When PM invokes this method, it dispatches * the action to the proper SLI-3 or SLI-4 device resume routine, which will * resume the device. * * Return code * 0 - driver suspended the device * Error otherwise **/ static int lpfc_pci_resume_one(struct pci_dev *pdev) { struct Scsi_Host *shost = pci_get_drvdata(pdev); struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba; int rc = -ENODEV; switch (phba->pci_dev_grp) { case LPFC_PCI_DEV_LP: rc = lpfc_pci_resume_one_s3(pdev); break; case LPFC_PCI_DEV_OC: rc = lpfc_pci_resume_one_s4(pdev); break; default: lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "1426 Invalid PCI device group: 0x%x\n", phba->pci_dev_grp); break; } return rc; } /** * lpfc_io_error_detected - lpfc method for handling PCI I/O error * @pdev: pointer to PCI device. * @state: the current PCI connection state. * * This routine is registered to the PCI subsystem for error handling. This * function is called by the PCI subsystem after a PCI bus error affecting * this device has been detected. When this routine is invoked, it dispatches * the action to the proper SLI-3 or SLI-4 device error detected handling * routine, which will perform the proper error detected operation. * * Return codes * PCI_ERS_RESULT_NEED_RESET - need to reset before recovery * PCI_ERS_RESULT_DISCONNECT - device could not be recovered **/ static pci_ers_result_t lpfc_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state) { struct Scsi_Host *shost = pci_get_drvdata(pdev); struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba; pci_ers_result_t rc = PCI_ERS_RESULT_DISCONNECT; switch (phba->pci_dev_grp) { case LPFC_PCI_DEV_LP: rc = lpfc_io_error_detected_s3(pdev, state); break; case LPFC_PCI_DEV_OC: rc = lpfc_io_error_detected_s4(pdev, state); break; default: lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "1427 Invalid PCI device group: 0x%x\n", phba->pci_dev_grp); break; } return rc; } /** * lpfc_io_slot_reset - lpfc method for restart PCI dev from scratch * @pdev: pointer to PCI device. * * This routine is registered to the PCI subsystem for error handling. This * function is called after PCI bus has been reset to restart the PCI card * from scratch, as if from a cold-boot. When this routine is invoked, it * dispatches the action to the proper SLI-3 or SLI-4 device reset handling * routine, which will perform the proper device reset. * * Return codes * PCI_ERS_RESULT_RECOVERED - the device has been recovered * PCI_ERS_RESULT_DISCONNECT - device could not be recovered **/ static pci_ers_result_t lpfc_io_slot_reset(struct pci_dev *pdev) { struct Scsi_Host *shost = pci_get_drvdata(pdev); struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba; pci_ers_result_t rc = PCI_ERS_RESULT_DISCONNECT; switch (phba->pci_dev_grp) { case LPFC_PCI_DEV_LP: rc = lpfc_io_slot_reset_s3(pdev); break; case LPFC_PCI_DEV_OC: rc = lpfc_io_slot_reset_s4(pdev); break; default: lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "1428 Invalid PCI device group: 0x%x\n", phba->pci_dev_grp); break; } return rc; } /** * lpfc_io_resume - lpfc method for resuming PCI I/O operation * @pdev: pointer to PCI device * * This routine is registered to the PCI subsystem for error handling. It * is called when kernel error recovery tells the lpfc driver that it is * OK to resume normal PCI operation after PCI bus error recovery. When * this routine is invoked, it dispatches the action to the proper SLI-3 * or SLI-4 device io_resume routine, which will resume the device operation. **/ static void lpfc_io_resume(struct pci_dev *pdev) { struct Scsi_Host *shost = pci_get_drvdata(pdev); struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba; switch (phba->pci_dev_grp) { case LPFC_PCI_DEV_LP: lpfc_io_resume_s3(pdev); break; case LPFC_PCI_DEV_OC: lpfc_io_resume_s4(pdev); break; default: lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "1429 Invalid PCI device group: 0x%x\n", phba->pci_dev_grp); break; } return; } static struct pci_device_id lpfc_id_table[] = { {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_VIPER, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_FIREFLY, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_THOR, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PEGASUS, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_CENTAUR, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_DRAGONFLY, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SUPERFLY, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_RFLY, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PFLY, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_NEPTUNE, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_NEPTUNE_SCSP, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_NEPTUNE_DCSP, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HELIOS, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HELIOS_SCSP, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HELIOS_DCSP, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_BMID, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_BSMB, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZEPHYR, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HORNET, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZEPHYR_SCSP, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZEPHYR_DCSP, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZMID, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZSMB, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_TFLY, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LP101, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LP10000S, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LP11000S, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LPE11000S, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_MID, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_SMB, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_DCSP, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_SCSP, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_S, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PROTEUS_VF, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PROTEUS_PF, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PROTEUS_S, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_SERVERENGINE, PCI_DEVICE_ID_TIGERSHARK, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_SERVERENGINE, PCI_DEVICE_ID_TOMCAT, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_FALCON, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_BALIUS, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LANCER_FC, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LANCER_FCOE, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LANCER_FC_VF, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LANCER_FCOE_VF, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SKYHAWK, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SKYHAWK_VF, PCI_ANY_ID, PCI_ANY_ID, }, { 0 } }; MODULE_DEVICE_TABLE(pci, lpfc_id_table); static const struct pci_error_handlers lpfc_err_handler = { .error_detected = lpfc_io_error_detected, .slot_reset = lpfc_io_slot_reset, .resume = lpfc_io_resume, }; static struct pci_driver lpfc_driver = { .name = LPFC_DRIVER_NAME, .id_table = lpfc_id_table, .probe = lpfc_pci_probe_one, .remove = lpfc_pci_remove_one, .shutdown = lpfc_pci_remove_one, .suspend = lpfc_pci_suspend_one, .resume = lpfc_pci_resume_one, .err_handler = &lpfc_err_handler, }; static const struct file_operations lpfc_mgmt_fop = { .owner = THIS_MODULE, }; static struct miscdevice lpfc_mgmt_dev = { .minor = MISC_DYNAMIC_MINOR, .name = "lpfcmgmt", .fops = &lpfc_mgmt_fop, }; /** * lpfc_init - lpfc module initialization routine * * This routine is to be invoked when the lpfc module is loaded into the * kernel. The special kernel macro module_init() is used to indicate the * role of this routine to the kernel as lpfc module entry point. * * Return codes * 0 - successful * -ENOMEM - FC attach transport failed * all others - failed */ static int __init lpfc_init(void) { int cpu; int error = 0; printk(LPFC_MODULE_DESC "\n"); printk(LPFC_COPYRIGHT "\n"); error = misc_register(&lpfc_mgmt_dev); if (error) printk(KERN_ERR "Could not register lpfcmgmt device, " "misc_register returned with status %d", error); if (lpfc_enable_npiv) { lpfc_transport_functions.vport_create = lpfc_vport_create; lpfc_transport_functions.vport_delete = lpfc_vport_delete; } lpfc_transport_template = fc_attach_transport(&lpfc_transport_functions); if (lpfc_transport_template == NULL) return -ENOMEM; if (lpfc_enable_npiv) { lpfc_vport_transport_template = fc_attach_transport(&lpfc_vport_transport_functions); if (lpfc_vport_transport_template == NULL) { fc_release_transport(lpfc_transport_template); return -ENOMEM; } } /* Initialize in case vector mapping is needed */ for (cpu = 0; cpu < LPFC_MAX_CPU; cpu++) lpfc_used_cpu[cpu] = LPFC_VECTOR_MAP_EMPTY; error = pci_register_driver(&lpfc_driver); if (error) { fc_release_transport(lpfc_transport_template); if (lpfc_enable_npiv) fc_release_transport(lpfc_vport_transport_template); } return error; } /** * lpfc_exit - lpfc module removal routine * * This routine is invoked when the lpfc module is removed from the kernel. * The special kernel macro module_exit() is used to indicate the role of * this routine to the kernel as lpfc module exit point. */ static void __exit lpfc_exit(void) { misc_deregister(&lpfc_mgmt_dev); pci_unregister_driver(&lpfc_driver); fc_release_transport(lpfc_transport_template); if (lpfc_enable_npiv) fc_release_transport(lpfc_vport_transport_template); if (_dump_buf_data) { printk(KERN_ERR "9062 BLKGRD: freeing %lu pages for " "_dump_buf_data at 0x%p\n", (1L << _dump_buf_data_order), _dump_buf_data); free_pages((unsigned long)_dump_buf_data, _dump_buf_data_order); } if (_dump_buf_dif) { printk(KERN_ERR "9049 BLKGRD: freeing %lu pages for " "_dump_buf_dif at 0x%p\n", (1L << _dump_buf_dif_order), _dump_buf_dif); free_pages((unsigned long)_dump_buf_dif, _dump_buf_dif_order); } } module_init(lpfc_init); module_exit(lpfc_exit); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION(LPFC_MODULE_DESC); MODULE_AUTHOR("Emulex Corporation - tech.support@emulex.com"); MODULE_VERSION("0:" LPFC_DRIVER_VERSION);