/******************************************************************* * This file is part of the Emulex Linux Device Driver for * * Fibre Channel Host Bus Adapters. * * Copyright (C) 2017-2025 Broadcom. All Rights Reserved. The term * * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. * * Copyright (C) 2004-2016 Emulex. All rights reserved. * * EMULEX and SLI are trademarks of Emulex. * * www.broadcom.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. *
*******************************************************************/
staticenum cpuhp_state lpfc_cpuhp_state; /* Used when mapping IRQ vectors in a driver centric manner */ static uint32_t lpfc_present_cpu; staticbool lpfc_pldv_detect;
/** * 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; staticchar licensed[56] = "key unlock for use with gnu public licensed code only\0"; staticint init_key = 1;
/* * Clear all option bits except LPFC_SLI3_BG_ENABLED, * which was already set in lpfc_get_cfgparam()
*/
phba->sli3_options &= (uint32_t)LPFC_SLI3_BG_ENABLED;
/* * 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_TRACE_EVENT, "0440 Adapter failed to init, READ_REV has " "missing revision information.\n");
mempool_free(pmb, phba->mbox_mem_pool); return -ERESTART;
}
/* 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;
/** * 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.
**/ staticvoid
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.
**/ staticvoid
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 */
dist = dist_char[prg->dist];
/* * 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)
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 the port name has changed, then set the Param changes flag * to unreg the login
*/ if (vport->fc_portname.u.wwn[0] != 0 &&
memcmp(&vport->fc_portname, &vport->fc_sparam.portName, sizeof(struct lpfc_name))) {
vport->vport_flag |= FAWWPN_PARAM_CHG;
/** * 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);
/* This dmabuf was allocated by lpfc_read_sparam. The dmabuf is no * longer needed. Prevent unintended ctx_buf access as the mbox is * reused.
*/
memcpy(&vport->fc_sparam, mp->virt, sizeof (struct serv_parm));
lpfc_mbuf_free(phba, mp->virt, mp->phys);
kfree(mp);
pmb->ctx_buf = 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;
/* 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) {
lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, "3359 HBA queue depth changed from %d to %d\n",
phba->cfg_hba_queue_depth,
mb->un.varRdConfig.max_xri);
phba->cfg_hba_queue_depth = mb->un.varRdConfig.max_xri;
}
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->sli3_ring[LPFC_EXTRA_RING].sli.sli3.cmdringaddr)
psli->sli3_ring[LPFC_EXTRA_RING].flag |= LPFC_STOP_IOCB_EVENT; if (psli->sli3_ring[LPFC_FCP_RING].sli.sli3.cmdringaddr)
psli->sli3_ring[LPFC_FCP_RING].flag |= LPFC_STOP_IOCB_EVENT;
/* Post receive buffers for desired rings */ if (phba->sli_rev != 3)
lpfc_post_rcv_buf(phba);
spin_lock_irq(&phba->hbalock); /* Initialize ERATT handling flag */
clear_bit(HBA_ERATT_HANDLED, &phba->hba_flag);
/* 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);
if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "0435 Adapter failed " "to get Option ROM version status x%x\n", rc);
mempool_free(pmb, phba->mbox_mem_pool);
}
return 0;
}
/** * lpfc_sli4_refresh_params - update driver copy of params. * @phba: Pointer to HBA context object. * * This is called to refresh driver copy of dynamic fields from the * common_get_sli4_parameters descriptor.
**/ int
lpfc_sli4_refresh_params(struct lpfc_hba *phba)
{
LPFC_MBOXQ_t *mboxq; struct lpfc_mqe *mqe; struct lpfc_sli4_parameters *mbx_sli4_parameters; int length, rc;
mboxq = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mboxq) return -ENOMEM;
/* Are we forcing MI off via module parameter? */ if (phba->cfg_enable_mi)
phba->sli4_hba.pc_sli4_params.mi_ver =
bf_get(cfg_mi_ver, mbx_sli4_parameters); else
phba->sli4_hba.pc_sli4_params.mi_ver = 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
**/ staticint
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;
/** * 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
**/ staticint
lpfc_hba_down_link(struct lpfc_hba *phba, uint32_t flag)
{
LPFC_MBOXQ_t *pmb; int rc;
/** * 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 (test_bit(FC_UNLOADING, &phba->pport->load_flag))
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_sli4_free_sp_events - Cleanup sp_queue_events to free * rspiocb which got deferred * * @phba: pointer to lpfc HBA data structure. * * This routine will cleanup completed slow path events after HBA is reset * when bringing down the SLI Layer. * * * Return codes * void.
**/ staticvoid
lpfc_sli4_free_sp_events(struct lpfc_hba *phba)
{ struct lpfc_iocbq *rspiocbq; struct hbq_dmabuf *dmabuf; struct lpfc_cq_event *cq_event;
clear_bit(HBA_SP_QUEUE_EVT, &phba->hba_flag);
while (!list_empty(&phba->sli4_hba.sp_queue_event)) { /* Get the response iocb from the head of work queue */
spin_lock_irq(&phba->hbalock);
list_remove_head(&phba->sli4_hba.sp_queue_event,
cq_event, struct lpfc_cq_event, list);
spin_unlock_irq(&phba->hbalock);
switch (bf_get(lpfc_wcqe_c_code, &cq_event->cqe.wcqe_cmpl)) { case CQE_CODE_COMPL_WQE:
rspiocbq = container_of(cq_event, struct lpfc_iocbq,
cq_event);
lpfc_sli_release_iocbq(phba, rspiocbq); break; case CQE_CODE_RECEIVE: case CQE_CODE_RECEIVE_V1:
dmabuf = container_of(cq_event, struct hbq_dmabuf,
cq_event);
lpfc_in_buf_free(phba, &dmabuf->dbuf);
}
}
}
/** * lpfc_hba_free_post_buf - Perform lpfc uninitialization after HBA reset * @phba: pointer to lpfc HBA data structure. * * This routine will cleanup posted ELS buffers after the HBA is reset * when bringing down the SLI Layer. * * * Return codes * void.
**/ staticvoid
lpfc_hba_free_post_buf(struct lpfc_hba *phba)
{ struct lpfc_sli *psli = &phba->sli; struct lpfc_sli_ring *pring; struct lpfc_dmabuf *mp, *next_mp;
LIST_HEAD(buflist); int count;
if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)
lpfc_sli_hbqbuf_free_all(phba); else { /* Cleanup preposted buffers on the ELS ring */
pring = &psli->sli3_ring[LPFC_ELS_RING];
spin_lock_irq(&phba->hbalock);
list_splice_init(&pring->postbufq, &buflist);
spin_unlock_irq(&phba->hbalock);
/** * lpfc_hba_clean_txcmplq - Perform lpfc uninitialization after HBA reset * @phba: pointer to lpfc HBA data structure. * * This routine will cleanup the txcmplq after the HBA is reset when bringing * down the SLI Layer. * * Return codes * void
**/ staticvoid
lpfc_hba_clean_txcmplq(struct lpfc_hba *phba)
{ struct lpfc_sli *psli = &phba->sli; struct lpfc_queue *qp = NULL; struct lpfc_sli_ring *pring;
LIST_HEAD(completions); int i; struct lpfc_iocbq *piocb, *next_iocb;
if (phba->sli_rev != LPFC_SLI_REV4) { for (i = 0; i < psli->num_rings; i++) {
pring = &psli->sli3_ring[i];
spin_lock_irq(&phba->hbalock); /* At this point in time the HBA is either reset or DOA * Nothing should be on txcmplq as it will * NEVER complete.
*/
list_splice_init(&pring->txcmplq, &completions);
pring->txcmplq_cnt = 0;
spin_unlock_irq(&phba->hbalock);
lpfc_sli_abort_iocb_ring(phba, pring);
} /* Cancel all the IOCBs from the completions list */
lpfc_sli_cancel_iocbs(phba, &completions,
IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED); return;
}
list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) {
pring = qp->pring; if (!pring) continue;
spin_lock_irq(&pring->ring_lock);
list_for_each_entry_safe(piocb, next_iocb,
&pring->txcmplq, list)
piocb->cmd_flag &= ~LPFC_IO_ON_TXCMPLQ;
list_splice_init(&pring->txcmplq, &completions);
pring->txcmplq_cnt = 0;
spin_unlock_irq(&pring->ring_lock);
lpfc_sli_abort_iocb_ring(phba, pring);
} /* Cancel all the IOCBs from the completions list */
lpfc_sli_cancel_iocbs(phba, &completions,
IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
}
/** * 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.
**/ staticint
lpfc_hba_down_post_s3(struct lpfc_hba *phba)
{
lpfc_hba_free_post_buf(phba);
lpfc_hba_clean_txcmplq(phba); 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.
**/ staticint
lpfc_hba_down_post_s4(struct lpfc_hba *phba)
{ struct lpfc_io_buf *psb, *psb_next; struct lpfc_async_xchg_ctx *ctxp, *ctxp_next; struct lpfc_sli4_hdw_queue *qp;
LIST_HEAD(aborts);
LIST_HEAD(nvme_aborts);
LIST_HEAD(nvmet_aborts); struct lpfc_sglq *sglq_entry = NULL; int cnt, idx;
/* 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_els_sgl_list so that it can either be freed if the * driver is unloading or reposted if the driver is restarting * the port.
*/
/* sgl_list_lock required because worker thread uses this * list.
*/
spin_lock_irq(&phba->sli4_hba.sgl_list_lock);
list_for_each_entry(sglq_entry,
&phba->sli4_hba.lpfc_abts_els_sgl_list, list)
sglq_entry->state = SGL_FREED;
/** * 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 * @t: timer context used to obtain 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.
**/ staticvoid
lpfc_hb_timeout(struct timer_list *t)
{ struct lpfc_hba *phba;
uint32_t tmo_posted; unsignedlong 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 * @t: timer context used to obtain 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.
**/ staticvoid
lpfc_rrq_timeout(struct timer_list *t)
{ struct lpfc_hba *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.
**/ staticvoid
lpfc_hb_mbox_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
{
clear_bit(HBA_HBEAT_INP, &phba->hba_flag);
clear_bit(HBA_HBEAT_TMO, &phba->hba_flag);
/* Check and reset heart-beat timer if necessary */
mempool_free(pmboxq, phba->mbox_mem_pool); if (!test_bit(FC_OFFLINE_MODE, &phba->pport->fc_flag) &&
!(phba->link_state == LPFC_HBA_ERROR) &&
!test_bit(FC_UNLOADING, &phba->pport->load_flag))
mod_timer(&phba->hb_tmofunc,
jiffies +
secs_to_jiffies(LPFC_HB_MBOX_INTERVAL)); return;
}
/* Skip if we've already handled this eq's primary CPU */ if (eq->chann != i) continue;
idle_stat = &phba->sli4_hba.idle_stat[i];
/* get_cpu_idle_time returns values as running counters. Thus, * to know the amount for this period, the prior counter values * need to be subtracted from the current counter values. * From there, the idle time stat can be calculated as a * percentage of 100 - the sum of the other consumption times.
*/
wall_idle = get_cpu_idle_time(i, &wall, 1);
diff_idle = wall_idle - idle_stat->prev_idle;
diff_wall = wall - idle_stat->prev_wall;
if (!phba->cfg_auto_imax ||
test_bit(FC_UNLOADING, &phba->pport->load_flag)) return;
if (phba->link_state == LPFC_HBA_ERROR ||
test_bit(FC_OFFLINE_MODE, &phba->pport->fc_flag)) goto requeue;
ena_delay = kcalloc(phba->sli4_hba.num_possible_cpu, sizeof(*ena_delay),
GFP_KERNEL); if (!ena_delay) goto requeue;
for (i = 0; i < phba->cfg_irq_chann; i++) { /* Get the EQ corresponding to the IRQ vector */
eq = phba->sli4_hba.hba_eq_hdl[i].eq; if (!eq) continue; if (eq->q_mode || eq->q_flag & HBA_EQ_DELAY_CHK) {
eq->q_flag &= ~HBA_EQ_DELAY_CHK;
ena_delay[eq->last_cpu] = 1;
}
}
/** * lpfc_hb_mxp_handler - Multi-XRI pools handler to adjust XRI distribution * @phba: pointer to lpfc hba data structure. * * For each heartbeat, this routine does some heuristic methods to adjust * XRI distribution. The goal is to fully utilize free XRIs.
**/ staticvoid lpfc_hb_mxp_handler(struct lpfc_hba *phba)
{
u32 i;
u32 hwq_count;
hwq_count = phba->cfg_hdw_queue; for (i = 0; i < hwq_count; i++) { /* Adjust XRIs in private pool */
lpfc_adjust_pvt_pool_count(phba, i);
/* Adjust high watermark */
lpfc_adjust_high_watermark(phba, i);
/** * lpfc_issue_hb_mbox - Issues heart-beat mailbox command * @phba: pointer to lpfc hba data structure. * * If a HB mbox is not already in progrees, this routine will allocate * a LPFC_MBOXQ_t, populate it with a MBX_HEARTBEAT (0x31) command, * and issue it. The HBA_HBEAT_INP flag means the command is in progress.
**/ int
lpfc_issue_hb_mbox(struct lpfc_hba *phba)
{
LPFC_MBOXQ_t *pmboxq; int retval;
/* Is a Heartbeat mbox already in progress */ if (test_bit(HBA_HBEAT_INP, &phba->hba_flag)) return 0;
pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!pmboxq) return -ENOMEM;
/** * lpfc_issue_hb_tmo - Signals heartbeat timer to issue mbox command * @phba: pointer to lpfc hba data structure. * * The heartbeat timer (every 5 sec) will fire. If the HBA_HBEAT_TMO * flag is set, it will force a MBX_HEARTBEAT mbox command, regardless * of the value of lpfc_enable_hba_heartbeat. * If lpfc_enable_hba_heartbeat is set, the timeout routine will always * try to issue a MBX_HEARTBEAT mbox command.
**/ void
lpfc_issue_hb_tmo(struct lpfc_hba *phba)
{ if (phba->cfg_enable_hba_heartbeat) return;
set_bit(HBA_HBEAT_TMO, &phba->hba_flag);
}
/** * 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; struct lpfc_dmabuf *buf_ptr; int retval = 0; int i, tmo; struct lpfc_sli *psli = &phba->sli;
LIST_HEAD(completions);
if (phba->cfg_xri_rebalancing) { /* Multi-XRI pools handler */
lpfc_hb_mxp_handler(phba);
}
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_fdmi_change_check(vports[i]);
}
lpfc_destroy_vport_work_array(phba, vports);
/* If there is no heart beat outstanding, issue a heartbeat command */ if (phba->cfg_enable_hba_heartbeat) { /* If IOs are completing, no need to issue a MBX_HEARTBEAT */
spin_lock_irq(&phba->pport->work_port_lock); if (time_after(phba->last_completion_time +
secs_to_jiffies(LPFC_HB_MBOX_INTERVAL),
jiffies)) {
spin_unlock_irq(&phba->pport->work_port_lock); if (test_bit(HBA_HBEAT_INP, &phba->hba_flag))
tmo = (1000 * LPFC_HB_MBOX_TIMEOUT); else
tmo = (1000 * LPFC_HB_MBOX_INTERVAL); goto out;
}
spin_unlock_irq(&phba->pport->work_port_lock);
/* Check if a MBX_HEARTBEAT is already in progress */ if (test_bit(HBA_HBEAT_INP, &phba->hba_flag)) { /* * If heart beat timeout called with HBA_HBEAT_INP 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 outstanding: " "last compl time was %d ms.\n",
jiffies_to_msecs(jiffies
- phba->last_completion_time));
tmo = (1000 * LPFC_HB_MBOX_TIMEOUT);
} else { if ((!(psli->sli_flag & LPFC_SLI_MBOX_ACTIVE)) &&
(list_empty(&psli->mboxq))) {
retval = lpfc_issue_hb_mbox(phba); if (retval) {
tmo = (1000 * LPFC_HB_MBOX_INTERVAL); goto out;
}
phba->skipped_hb = 0;
} elseif (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;
tmo = (1000 * LPFC_HB_MBOX_TIMEOUT); goto out;
}
} else { /* Check to see if we want to force a MBX_HEARTBEAT */ if (test_bit(HBA_HBEAT_TMO, &phba->hba_flag)) {
retval = lpfc_issue_hb_mbox(phba); if (retval)
tmo = (1000 * LPFC_HB_MBOX_INTERVAL); else
tmo = (1000 * LPFC_HB_MBOX_TIMEOUT); goto out;
}
tmo = (1000 * LPFC_HB_MBOX_INTERVAL);
}
out:
mod_timer(&phba->hb_tmofunc, jiffies + msecs_to_jiffies(tmo));
}
/** * 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.
**/ staticvoid
lpfc_offline_eratt(struct lpfc_hba *phba)
{ struct lpfc_sli *psli = &phba->sli;
/** * 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)
{
spin_lock_irq(&phba->hbalock); if (phba->link_state == LPFC_HBA_ERROR &&
test_bit(HBA_PCI_ERR, &phba->bit_flags)) {
spin_unlock_irq(&phba->hbalock); return;
}
phba->link_state = LPFC_HBA_ERROR;
spin_unlock_irq(&phba->hbalock);
/** * 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.
**/ staticvoid
lpfc_handle_deferred_eratt(struct lpfc_hba *phba)
{
uint32_t old_host_status = phba->work_hs; 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)) {
clear_bit(DEFER_ERATT, &phba->hba_flag); return;
}
/* * 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.
*/
lpfc_sli_abort_fcp_rings(phba);
/* * 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 (test_bit(FC_UNLOADING, &phba->pport->load_flag)) {
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 && !test_bit(FC_UNLOADING, &phba->pport->load_flag))
phba->work_hs = old_host_status & ~HS_FFER1;
/** * 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
**/ staticvoid
lpfc_handle_eratt_s3(struct lpfc_hba *phba)
{ struct lpfc_vport *vport = phba->pport; struct lpfc_sli *psli = &phba->sli;
uint32_t event_data; unsignedlong 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)) {
clear_bit(DEFER_ERATT, &phba->hba_flag); 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 (test_bit(DEFER_ERATT, &phba->hba_flag))
lpfc_handle_deferred_eratt(phba);
/* * 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.
*/
lpfc_sli_abort_fcp_rings(phba);
/* * 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);
} elseif (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_TRACE_EVENT, "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]);
} 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_TRACE_EVENT, "0457 Adapter Hardware Error " "Data: x%x x%x x%x\n",
phba->work_hs,
phba->work_status[0], phba->work_status[1]);
/** * 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. * @en_rn_msg: send reset/port recovery message. * 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.
**/ staticint
lpfc_sli4_port_sta_fn_reset(struct lpfc_hba *phba, int mbx_action, bool en_rn_msg)
{ int rc;
uint32_t intr_mode;
LPFC_MBOXQ_t *mboxq;
/* Notifying the transport that the targets are going offline. */
lpfc_scsi_dev_block(phba);
if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >=
LPFC_SLI_INTF_IF_TYPE_2) { /* * On error status condition, driver need to wait for port * ready before performing reset.
*/
rc = lpfc_sli4_pdev_status_reg_wait(phba); if (rc) return rc;
}
/* need reset: attempt for port recovery */ if (en_rn_msg)
lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "2887 Reset Needed: Attempting Port " "Recovery...\n");
/* If we are no wait, the HBA has been reset and is not * functional, thus we should clear * (LPFC_SLI_ACTIVE | LPFC_SLI_MBOX_ACTIVE) flags.
*/ if (mbx_action == LPFC_MBX_NO_WAIT) {
spin_lock_irq(&phba->hbalock);
phba->sli.sli_flag &= ~LPFC_SLI_ACTIVE; if (phba->sli.mbox_active) {
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);
}
lpfc_offline_prep(phba, mbx_action);
lpfc_sli_flush_io_rings(phba);
lpfc_nvmels_flush_cmd(phba);
lpfc_offline(phba); /* release interrupt for possible resource change */
lpfc_sli4_disable_intr(phba);
rc = lpfc_sli_brdrestart(phba); if (rc) {
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "6309 Failed to restart board\n"); return rc;
} /* 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_TRACE_EVENT, "3175 Failed to enable interrupt\n"); return -EIO;
}
phba->intr_mode = intr_mode;
rc = lpfc_online(phba); if (rc == 0)
lpfc_unblock_mgmt_io(phba);
/* If the pci channel is offline, ignore possible errors, since * we cannot communicate with the pci card anyway.
*/ if (pci_channel_offline(phba->pcidev)) {
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "3166 pci channel is offline\n");
lpfc_sli_flush_io_rings(phba); return;
}
/* If resets are disabled then leave the HBA alone and return */ if (!phba->cfg_enable_hba_reset) return;
/* Check port status register for function reset */
rc = lpfc_sli4_port_sta_fn_reset(phba, LPFC_MBX_NO_WAIT,
en_rn_msg); 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_TRACE_EVENT, "3152 Unrecoverable error\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);
/** * 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. SLI3 only.
**/ 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; int rc = 0;
/** * 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; 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 = ((((unsignedshort)lenhi) << 8) + lenlo);
index += i; break; case 0x90:
index += 1;
lenlo = vpd[index];
index += 1;
lenhi = vpd[index];
index += 1;
Length = ((((unsignedshort)lenhi) << 8) + lenlo); if (Length > len - index)
Length = len - index;
lpfc_fill_vpd(phba, vpd, Length, &index);
finished = 0; break; case 0x78:
finished = 1; break; default:
index ++; break;
}
}
return(1);
}
/** * lpfc_get_atto_model_desc - Retrieve ATTO 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.
**/ staticvoid
lpfc_get_atto_model_desc(struct lpfc_hba *phba, uint8_t *mdp, uint8_t *descp)
{
uint16_t sub_dev_id = phba->pcidev->subsystem_device; char *model = "<Unknown>"; int tbolt = 0;
switch (sub_dev_id) { case PCI_DEVICE_ID_CLRY_161E:
model = "161E"; break; case PCI_DEVICE_ID_CLRY_162E:
model = "162E"; break; case PCI_DEVICE_ID_CLRY_164E:
model = "164E"; break; case PCI_DEVICE_ID_CLRY_161P:
model = "161P"; break; case PCI_DEVICE_ID_CLRY_162P:
model = "162P"; break; case PCI_DEVICE_ID_CLRY_164P:
model = "164P"; break; case PCI_DEVICE_ID_CLRY_321E:
model = "321E"; break; case PCI_DEVICE_ID_CLRY_322E:
model = "322E"; break; case PCI_DEVICE_ID_CLRY_324E:
model = "324E"; break; case PCI_DEVICE_ID_CLRY_321P:
model = "321P"; break; case PCI_DEVICE_ID_CLRY_322P:
model = "322P"; break; case PCI_DEVICE_ID_CLRY_324P:
model = "324P"; break; case PCI_DEVICE_ID_TLFC_2XX2:
model = "2XX2";
tbolt = 1; break; case PCI_DEVICE_ID_TLFC_3162:
model = "3162";
tbolt = 1; break; case PCI_DEVICE_ID_TLFC_3322:
model = "3322";
tbolt = 1; break; default:
model = "Unknown"; break;
}
if (mdp && mdp[0] == '\0')
snprintf(mdp, 79, "%s", model);
if (descp && descp[0] == '\0')
snprintf(descp, 255, "ATTO %s%s, Fibre Channel Adapter Initiator, Port %s",
(tbolt) ? "ThunderLink FC " : "Celerity FC-",
model,
phba->Port);
}
/** * 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.
**/ staticvoid
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 = {"<Unknown>", "", ""};
switch (dev_id) { case PCI_DEVICE_ID_FIREFLY:
m = (typeof(m)){"LP6000", "PCI", "Obsolete, Unsupported Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_SUPERFLY: if (vp->rev.biuRev >= 1 && vp->rev.biuRev <= 3)
m = (typeof(m)){"LP7000", "PCI", ""}; else
m = (typeof(m)){"LP7000E", "PCI", ""};
m.function = "Obsolete, Unsupported Fibre Channel Adapter"; break; case PCI_DEVICE_ID_DRAGONFLY:
m = (typeof(m)){"LP8000", "PCI", "Obsolete, Unsupported 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", ""}; else
m = (typeof(m)){"LP9000", "PCI", ""};
m.function = "Obsolete, Unsupported Fibre Channel Adapter"; break; case PCI_DEVICE_ID_RFLY:
m = (typeof(m)){"LP952", "PCI", "Obsolete, Unsupported Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_PEGASUS:
m = (typeof(m)){"LP9802", "PCI-X", "Obsolete, Unsupported Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_THOR:
m = (typeof(m)){"LP10000", "PCI-X", "Obsolete, Unsupported Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_VIPER:
m = (typeof(m)){"LPX1000", "PCI-X", "Obsolete, Unsupported Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_PFLY:
m = (typeof(m)){"LP982", "PCI-X", "Obsolete, Unsupported Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_TFLY:
m = (typeof(m)){"LP1050", "PCI-X", "Obsolete, Unsupported Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_HELIOS:
m = (typeof(m)){"LP11000", "PCI-X2", "Obsolete, Unsupported Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_HELIOS_SCSP:
m = (typeof(m)){"LP11000-SP", "PCI-X2", "Obsolete, Unsupported Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_HELIOS_DCSP:
m = (typeof(m)){"LP11002-SP", "PCI-X2", "Obsolete, Unsupported Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_NEPTUNE:
m = (typeof(m)){"LPe1000", "PCIe", "Obsolete, Unsupported Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_NEPTUNE_SCSP:
m = (typeof(m)){"LPe1000-SP", "PCIe", "Obsolete, Unsupported Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_NEPTUNE_DCSP:
m = (typeof(m)){"LPe1002-SP", "PCIe", "Obsolete, Unsupported Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_BMID:
m = (typeof(m)){"LP1150", "PCI-X2", "Obsolete, Unsupported Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_BSMB:
m = (typeof(m)){"LP111", "PCI-X2", "Obsolete, Unsupported Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_ZEPHYR:
m = (typeof(m)){"LPe11000", "PCIe", "Obsolete, Unsupported Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_ZEPHYR_SCSP:
m = (typeof(m)){"LPe11000", "PCIe", "Obsolete, Unsupported Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_ZEPHYR_DCSP:
m = (typeof(m)){"LP2105", "PCIe", "Obsolete, Unsupported FCoE Adapter"};
GE = 1; break; case PCI_DEVICE_ID_ZMID:
m = (typeof(m)){"LPe1150", "PCIe", "Obsolete, Unsupported Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_ZSMB:
m = (typeof(m)){"LPe111", "PCIe", "Obsolete, Unsupported Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_LP101:
m = (typeof(m)){"LP101", "PCI-X", "Obsolete, Unsupported Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_LP10000S:
m = (typeof(m)){"LP10000-S", "PCI", "Obsolete, Unsupported Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_LP11000S:
m = (typeof(m)){"LP11000-S", "PCI-X2", "Obsolete, Unsupported Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_LPE11000S:
m = (typeof(m)){"LPe11000-S", "PCIe", "Obsolete, Unsupported Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_SAT:
m = (typeof(m)){"LPe12000", "PCIe", "Obsolete, Unsupported Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_SAT_MID:
m = (typeof(m)){"LPe1250", "PCIe", "Obsolete, Unsupported Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_SAT_SMB:
m = (typeof(m)){"LPe121", "PCIe", "Obsolete, Unsupported Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_SAT_DCSP:
m = (typeof(m)){"LPe12002-SP", "PCIe", "Obsolete, Unsupported Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_SAT_SCSP:
m = (typeof(m)){"LPe12000-SP", "PCIe", "Obsolete, Unsupported Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_SAT_S:
m = (typeof(m)){"LPe12000-S", "PCIe", "Obsolete, Unsupported Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_PROTEUS_VF:
m = (typeof(m)){"LPev12000", "PCIe IOV", "Obsolete, Unsupported Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_PROTEUS_PF:
m = (typeof(m)){"LPev12000", "PCIe IOV", "Obsolete, Unsupported Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_PROTEUS_S:
m = (typeof(m)){"LPemv12002-S", "PCIe IOV", "Obsolete, Unsupported Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_TIGERSHARK:
oneConnect = 1;
m = (typeof(m)){"OCe10100", "PCIe", "Obsolete, Unsupported FCoE Adapter"}; break; case PCI_DEVICE_ID_TOMCAT:
oneConnect = 1;
m = (typeof(m)){"OCe11100", "PCIe", "Obsolete, Unsupported FCoE Adapter"}; break; case PCI_DEVICE_ID_FALCON:
m = (typeof(m)){"LPSe12002-ML1-E", "PCIe", "Obsolete, Unsupported Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_BALIUS:
m = (typeof(m)){"LPVe12002", "PCIe Shared I/O", "Obsolete, Unsupported Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_LANCER_FC:
m = (typeof(m)){"LPe16000", "PCIe", "Obsolete, Unsupported Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_LANCER_FC_VF:
m = (typeof(m)){"LPe16000", "PCIe", "Obsolete, Unsupported Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_LANCER_FCOE:
oneConnect = 1;
m = (typeof(m)){"OCe15100", "PCIe", "Obsolete, Unsupported FCoE Adapter"}; break; case PCI_DEVICE_ID_LANCER_FCOE_VF:
oneConnect = 1;
m = (typeof(m)){"OCe15100", "PCIe", "Obsolete, Unsupported FCoE Adapter"}; break; case PCI_DEVICE_ID_LANCER_G6_FC:
m = (typeof(m)){"LPe32000", "PCIe", "Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_LANCER_G7_FC:
m = (typeof(m)){"LPe36000", "PCIe", "Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_LANCER_G7P_FC:
m = (typeof(m)){"LPe38000", "PCIe", "Fibre Channel Adapter"}; break; case PCI_DEVICE_ID_SKYHAWK: case PCI_DEVICE_ID_SKYHAWK_VF:
oneConnect = 1;
m = (typeof(m)){"OCe14000", "PCIe", "Obsolete, Unsupported FCoE Adapter"}; 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); elseif (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_sli3_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_sli3_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;
}
/** * 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. SLI3 only. * * Return codes * 0 - success (currently always success)
**/ staticint
lpfc_post_rcv_buf(struct lpfc_hba *phba)
{ struct lpfc_sli *psli = &phba->sli;
/* Ring 0, ELS / CT buffers */
lpfc_sli3_post_buffer(phba, &psli->sli3_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.
**/ staticvoid
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.
**/ staticvoid
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;
} elseif (t < 40) {
TEMP = (B ^ C ^ D) + 0x6ED9EBA1;
} elseif (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);
/** * 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.
**/ staticvoid
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;
/** * 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);
/* Clean up VMID resources */ if (lpfc_is_vmid_enabled(phba))
lpfc_vmid_vport_cleanup(vport);
/* Fabric Ports not in UNMAPPED state are cleaned up in the * DEVICE_RM event.
*/ if (ndlp->nlp_type & NLP_FABRIC &&
ndlp->nlp_state == NLP_STE_UNMAPPED_NODE)
lpfc_disc_state_machine(vport, ndlp, NULL,
NLP_EVT_DEVICE_RECOVERY);
if (!(ndlp->fc4_xpt_flags & (NVME_XPT_REGD|SCSI_XPT_REGD)))
lpfc_disc_state_machine(vport, ndlp, NULL,
NLP_EVT_DEVICE_RM);
}
/* This is a special case flush to return all * IOs before entering this loop. There are * two points in the code where a flush is * avoided if the FC_UNLOADING flag is set. * one is in the multipool destroy, * (this prevents a crash) and the other is * in the nvme abort handler, ( also prevents * a crash). Both of these exceptions are * cases where the slot is still accessible. * The flush here is only when the pci slot * is offline.
*/ if (test_bit(FC_UNLOADING, &vport->load_flag) &&
pci_channel_offline(phba->pcidev))
lpfc_sli_flush_io_rings(vport->phba);
/* 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_TRACE_EVENT, "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_DISCOVERY, "0282 did:x%x ndlp:x%px " "refcnt:%d xflags x%x " "nflag x%lx\n",
ndlp->nlp_DID, (void *)ndlp,
kref_read(&ndlp->kref),
ndlp->fc4_xpt_flags,
ndlp->nlp_flag);
} 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)
{
timer_delete_sync(&vport->els_tmofunc);
timer_delete_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 */
timer_delete(&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_cmf_stop - Stop CMF processing * @phba: pointer to lpfc hba data structure. * * This is called when the link goes down or if CMF mode is turned OFF. * It is also called when going offline or unloaded just before the * congestion info buffer is unregistered.
**/ void
lpfc_cmf_stop(struct lpfc_hba *phba)
{ int cpu; struct lpfc_cgn_stat *cgs;
/* We only do something if CMF is enabled */ if (!phba->sli4_hba.pc_sli4_params.cmf) return;
/* Use the new fc_linkspeed to recalculate */
phba->cmf_interval_rate = LPFC_CMF_INTERVAL;
phba->cmf_max_line_rate = lpfc_get_max_line_rate(phba);
phba->cmf_link_byte_count = div_u64(phba->cmf_max_line_rate *
phba->cmf_interval_rate, 1000);
phba->cmf_max_bytes_per_interval = phba->cmf_link_byte_count;
/* This is a signal to firmware to sync up CMF BW with link speed */
lpfc_issue_cmf_sync_wqe(phba, 0, 0);
}
/** * lpfc_cmf_start - Start CMF processing * @phba: pointer to lpfc hba data structure. * * This is called when the link comes up or if CMF mode is turned OFF * to Monitor or Managed.
**/ void
lpfc_cmf_start(struct lpfc_hba *phba)
{ struct lpfc_cgn_stat *cgs; int cpu;
/* We only do something if CMF is enabled */ if (!phba->sli4_hba.pc_sli4_params.cmf ||
phba->cmf_active_mode == LPFC_CFG_OFF) return;
/* Reinitialize congestion buffer info */
lpfc_init_congestion_buf(phba);
/** * 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)
{ if (phba->pport)
lpfc_stop_vport_timers(phba->pport);
cancel_delayed_work_sync(&phba->eq_delay_work);
cancel_delayed_work_sync(&phba->idle_stat_delay_work);
timer_delete_sync(&phba->sli.mbox_tmo);
timer_delete_sync(&phba->fabric_block_timer);
timer_delete_sync(&phba->eratt_poll);
timer_delete_sync(&phba->hb_tmofunc); if (phba->sli_rev == LPFC_SLI_REV4) {
timer_delete_sync(&phba->rrq_tmr);
clear_bit(HBA_RRQ_ACTIVE, &phba->hba_flag);
}
clear_bit(HBA_HBEAT_INP, &phba->hba_flag);
clear_bit(HBA_HBEAT_TMO, &phba->hba_flag);
switch (phba->pci_dev_grp) { case LPFC_PCI_DEV_LP: /* Stop any LightPulse device specific driver timers */
timer_delete_sync(&phba->fcp_poll_timer); break; case LPFC_PCI_DEV_OC: /* Stop any OneConnect device specific driver timers */
lpfc_sli4_stop_fcf_redisc_wait_timer(phba); break; default:
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "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. * @mbx_action: flag for mailbox no wait action. * * 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.
**/ staticvoid
lpfc_block_mgmt_io(struct lpfc_hba *phba, int mbx_action)
{ unsignedlong iflag;
uint8_t actcmd = MBX_HEARTBEAT; unsignedlong 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 = secs_to_jiffies(LPFC_MBOX_TMO) + 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 = secs_to_jiffies(lpfc_mbox_tmo_val(phba,
phba->sli.mbox_active)) + 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_TRACE_EVENT, "2813 Mgmt IO is Blocked %x " "- mbox cmd %x still active\n",
phba->sli.sli_flag, actcmd); break;
}
}
}
/** * lpfc_sli4_node_rpi_restore - Recover assigned 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_rpi_restore(struct lpfc_hba *phba)
{ struct lpfc_nodelist *ndlp, *next_ndlp; struct lpfc_vport **vports; int i, rpi;
if (phba->sli_rev != LPFC_SLI_REV4) return;
vports = lpfc_create_vport_work_array(phba); if (!vports) return;
for (i = 0; i <= phba->max_vports && vports[i]; i++) { if (test_bit(FC_UNLOADING, &vports[i]->load_flag)) continue;
/** * lpfc_create_expedite_pool - create expedite pool * @phba: pointer to lpfc hba data structure. * * This routine moves a batch of XRIs from lpfc_io_buf_list_put of HWQ 0 * to expedite pool. Mark them as expedite.
**/ staticvoid lpfc_create_expedite_pool(struct lpfc_hba *phba)
{ struct lpfc_sli4_hdw_queue *qp; struct lpfc_io_buf *lpfc_ncmd; struct lpfc_io_buf *lpfc_ncmd_next; struct lpfc_epd_pool *epd_pool; unsignedlong iflag;
/* Deal with public free xri pool */
pbl_pool = &multixri_pool->pbl_pool;
spin_lock_init(&pbl_pool->lock);
spin_lock_irqsave(&qp->io_buf_list_put_lock, iflag);
spin_lock(&pbl_pool->lock);
INIT_LIST_HEAD(&pbl_pool->list);
list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
&qp->lpfc_io_buf_list_put, list) {
list_move_tail(&lpfc_ncmd->list, &pbl_pool->list);
qp->put_io_bufs--;
pbl_pool->count++;
}
lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "1235 Moved %d buffers from PUT list over to pbl_pool[%d]\n",
pbl_pool->count, i);
spin_unlock(&pbl_pool->lock);
spin_unlock_irqrestore(&qp->io_buf_list_put_lock, iflag);
/** * 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, error = 0; bool vpis_cleared = false;
if (!phba) return 0;
vport = phba->pport;
if (!test_bit(FC_OFFLINE_MODE, &vport->fc_flag)) return 0;
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);
/* Reestablish the local initiator port. * The offline process destroyed the previous lport.
*/ if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME &&
!phba->nvmet_support) {
error = lpfc_nvme_create_localport(phba->pport); if (error)
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "6132 NVME restore reg failed " "on nvmei error x%x\n", error);
}
} else {
lpfc_sli_queue_init(phba); 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++) {
clear_bit(FC_OFFLINE_MODE, &vports[i]->fc_flag); if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
set_bit(FC_VPORT_NEEDS_REG_VPI,
&vports[i]->fc_flag); if (phba->sli_rev == LPFC_SLI_REV4) {
set_bit(FC_VPORT_NEEDS_INIT_VPI,
&vports[i]->fc_flag); if ((vpis_cleared) &&
(vports[i]->port_type !=
LPFC_PHYSICAL_PORT))
vports[i]->vpi = 0;
}
}
}
lpfc_destroy_vport_work_array(phba, vports);
if (phba->cfg_xri_rebalancing)
lpfc_create_multixri_pools(phba);
lpfc_cpuhp_add(phba);
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)
{ unsignedlong iflag;
/** * lpfc_offline_prep - Prepare a HBA to be brought offline * @phba: pointer to lpfc hba data structure. * @mbx_action: flag for mailbox shutdown action. * * 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; int offline; bool hba_pci_err;
if (test_bit(FC_OFFLINE_MODE, &vport->fc_flag)) return;
/* 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 (test_bit(FC_UNLOADING, &vports[i]->load_flag)) continue;
shost = lpfc_shost_from_vport(vports[i]);
spin_lock_irq(shost->host_lock);
vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
spin_unlock_irq(shost->host_lock);
set_bit(FC_VPORT_NEEDS_REG_VPI, &vports[i]->fc_flag);
clear_bit(FC_VFI_REGISTERED, &vports[i]->fc_flag);
if (ndlp->nlp_type & NLP_FABRIC) {
lpfc_disc_state_machine(vports[i], ndlp,
NULL, NLP_EVT_DEVICE_RECOVERY);
/* Don't remove the node unless the node * has been unregistered with the * transport, and we're not in recovery * before dev_loss_tmo triggered. * Otherwise, let dev_loss take care of * the node.
*/ if (!test_bit(NLP_IN_RECOV_POST_DEV_LOSS,
&ndlp->save_flags) &&
!(ndlp->fc4_xpt_flags &
(NVME_XPT_REGD | SCSI_XPT_REGD)))
lpfc_disc_state_machine
(vports[i], ndlp,
NULL,
NLP_EVT_DEVICE_RM);
}
}
}
}
lpfc_destroy_vport_work_array(phba, vports);
lpfc_sli_mbox_sys_shutdown(phba, mbx_action);
if (phba->wq)
flush_workqueue(phba->wq);
}
/** * 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 (test_bit(FC_OFFLINE_MODE, &phba->pport->fc_flag)) return;
/* stop port and all timers associated with this hba */
lpfc_stop_port(phba);
/* Tear down the local and target port registrations. The * nvme transports need to cleanup.
*/
lpfc_nvmet_destroy_targetport(phba);
lpfc_nvme_destroy_localport(phba->pport);
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;
spin_unlock_irq(shost->host_lock);
set_bit(FC_OFFLINE_MODE, &vports[i]->fc_flag);
}
lpfc_destroy_vport_work_array(phba, vports); /* If OFFLINE flag is clear (i.e. unloading), cpuhp removal is handled * in hba_unset
*/ if (test_bit(FC_OFFLINE_MODE, &phba->pport->fc_flag))
__lpfc_cpuhp_remove(phba);
if (phba->cfg_xri_rebalancing)
lpfc_destroy_multixri_pools(phba);
}
/** * 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.
**/ staticvoid
lpfc_scsi_free(struct lpfc_hba *phba)
{ struct lpfc_io_buf *sb, *sb_next;
if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP)) return;
spin_lock_irq(&phba->hbalock);
/* Release all the lpfc_scsi_bufs maintained by this host. */
/** * lpfc_io_free - Free all the IO buffers and IOCBs from driver lists * @phba: pointer to lpfc hba data structure. * * This routine is to free all the IO 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.
**/ void
lpfc_io_free(struct lpfc_hba *phba)
{ struct lpfc_io_buf *lpfc_ncmd, *lpfc_ncmd_next; struct lpfc_sli4_hdw_queue *qp; int idx;
for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
qp = &phba->sli4_hba.hdwq[idx]; /* Release all the lpfc_nvme_bufs maintained by this host. */
spin_lock(&qp->io_buf_list_put_lock);
list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
&qp->lpfc_io_buf_list_put,
list) {
list_del(&lpfc_ncmd->list);
qp->put_io_bufs--;
dma_pool_free(phba->lpfc_sg_dma_buf_pool,
lpfc_ncmd->data, lpfc_ncmd->dma_handle); if (phba->cfg_xpsgl && !phba->nvmet_support)
lpfc_put_sgl_per_hdwq(phba, lpfc_ncmd);
lpfc_put_cmd_rsp_buf_per_hdwq(phba, lpfc_ncmd);
kfree(lpfc_ncmd);
qp->total_io_bufs--;
}
spin_unlock(&qp->io_buf_list_put_lock);
/** * lpfc_sli4_els_sgl_update - update ELS 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_els_sgl_update(struct lpfc_hba *phba)
{ struct lpfc_sglq *sglq_entry = NULL, *sglq_entry_next = NULL;
uint16_t i, lxri, xri_cnt, els_xri_cnt;
LIST_HEAD(els_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_TRACE_EVENT, "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_TRACE_EVENT, "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->sli4_hba.sgl_list_lock);
list_splice_init(&els_sgl_list,
&phba->sli4_hba.lpfc_els_sgl_list);
spin_unlock_irq(&phba->sli4_hba.sgl_list_lock);
} elseif (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->sli4_hba.sgl_list_lock);
list_splice_init(&phba->sli4_hba.lpfc_els_sgl_list,
&els_sgl_list); /* 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);
}
}
list_splice_init(&els_sgl_list,
&phba->sli4_hba.lpfc_els_sgl_list);
spin_unlock_irq(&phba->sli4_hba.sgl_list_lock);
} 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_els_sgl_list, list) {
lxri = lpfc_sli4_next_xritag(phba); if (lxri == NO_XRI) {
lpfc_printf_log(phba, KERN_ERR,
LOG_TRACE_EVENT, "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];
} return 0;
/** * lpfc_sli4_nvmet_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_nvmet_sgl_update(struct lpfc_hba *phba)
{ struct lpfc_sglq *sglq_entry = NULL, *sglq_entry_next = NULL;
uint16_t i, lxri, xri_cnt, els_xri_cnt;
uint16_t nvmet_xri_cnt;
LIST_HEAD(nvmet_sgl_list); int rc;
/* * update on pci function's nvmet xri-sgl list
*/
els_xri_cnt = lpfc_sli4_get_els_iocb_cnt(phba);
/* For NVMET, ALL remaining XRIs are dedicated for IO processing */
nvmet_xri_cnt = phba->sli4_hba.max_cfg_param.max_xri - els_xri_cnt; if (nvmet_xri_cnt > phba->sli4_hba.nvmet_xri_cnt) { /* els xri-sgl expanded */
xri_cnt = nvmet_xri_cnt - phba->sli4_hba.nvmet_xri_cnt;
lpfc_printf_log(phba, KERN_INFO, LOG_SLI, "6302 NVMET xri-sgl cnt grew from %d to %d\n",
phba->sli4_hba.nvmet_xri_cnt, nvmet_xri_cnt); /* allocate the additional nvmet 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_TRACE_EVENT, "6303 Failure to allocate an " "NVMET sgl entry:%d\n", i);
rc = -ENOMEM; goto out_free_mem;
}
sglq_entry->buff_type = NVMET_BUFF_TYPE;
sglq_entry->virt = lpfc_nvmet_buf_alloc(phba, 0,
&sglq_entry->phys); if (sglq_entry->virt == NULL) {
kfree(sglq_entry);
lpfc_printf_log(phba, KERN_ERR,
LOG_TRACE_EVENT, "6304 Failure to allocate an " "NVMET buf:%d\n", i);
rc = -ENOMEM; goto out_free_mem;
}
sglq_entry->sgl = sglq_entry->virt;
memset(sglq_entry->sgl, 0,
phba->cfg_sg_dma_buf_size);
sglq_entry->state = SGL_FREED;
list_add_tail(&sglq_entry->list, &nvmet_sgl_list);
}
spin_lock_irq(&phba->hbalock);
spin_lock(&phba->sli4_hba.sgl_list_lock);
list_splice_init(&nvmet_sgl_list,
&phba->sli4_hba.lpfc_nvmet_sgl_list);
spin_unlock(&phba->sli4_hba.sgl_list_lock);
spin_unlock_irq(&phba->hbalock);
} elseif (nvmet_xri_cnt < phba->sli4_hba.nvmet_xri_cnt) { /* nvmet xri-sgl shrunk */
xri_cnt = phba->sli4_hba.nvmet_xri_cnt - nvmet_xri_cnt;
lpfc_printf_log(phba, KERN_INFO, LOG_SLI, "6305 NVMET xri-sgl count decreased from " "%d to %d\n", phba->sli4_hba.nvmet_xri_cnt,
nvmet_xri_cnt);
spin_lock_irq(&phba->hbalock);
spin_lock(&phba->sli4_hba.sgl_list_lock);
list_splice_init(&phba->sli4_hba.lpfc_nvmet_sgl_list,
&nvmet_sgl_list); /* release extra nvmet sgls from list */ for (i = 0; i < xri_cnt; i++) {
list_remove_head(&nvmet_sgl_list,
sglq_entry, struct lpfc_sglq, list); if (sglq_entry) {
lpfc_nvmet_buf_free(phba, sglq_entry->virt,
sglq_entry->phys);
kfree(sglq_entry);
}
}
list_splice_init(&nvmet_sgl_list,
&phba->sli4_hba.lpfc_nvmet_sgl_list);
spin_unlock(&phba->sli4_hba.sgl_list_lock);
spin_unlock_irq(&phba->hbalock);
} else
lpfc_printf_log(phba, KERN_INFO, LOG_SLI, "6306 NVMET xri-sgl count unchanged: %d\n",
nvmet_xri_cnt);
phba->sli4_hba.nvmet_xri_cnt = nvmet_xri_cnt;
/* update xris to nvmet 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_nvmet_sgl_list, list) {
lxri = lpfc_sli4_next_xritag(phba); if (lxri == NO_XRI) {
lpfc_printf_log(phba, KERN_ERR,
LOG_TRACE_EVENT, "6307 Failed to allocate xri for " "NVMET sgl\n");
rc = -ENOMEM; goto out_free_mem;
}
sglq_entry->sli4_lxritag = lxri;
sglq_entry->sli4_xritag = phba->sli4_hba.xri_ids[lxri];
} return 0;
/* Take everything off the get and put lists */
list_splice_init(&qp->lpfc_io_buf_list_get, &blist);
list_splice(&qp->lpfc_io_buf_list_put, &blist);
INIT_LIST_HEAD(&qp->lpfc_io_buf_list_get);
INIT_LIST_HEAD(&qp->lpfc_io_buf_list_put);
cnt += qp->get_io_bufs + qp->put_io_bufs;
qp->get_io_bufs = 0;
qp->put_io_bufs = 0;
qp->total_io_bufs = 0;
spin_unlock(&qp->io_buf_list_put_lock);
spin_unlock_irq(&qp->io_buf_list_get_lock);
}
/* * Take IO buffers off blist and put on cbuf sorted by XRI. * This is because POST_SGL takes a sequential range of XRIs * to post to the firmware.
*/ for (idx = 0; idx < cnt; idx++) {
list_remove_head(&blist, lpfc_cmd, struct lpfc_io_buf, list); if (!lpfc_cmd) return cnt; if (idx == 0) {
list_add_tail(&lpfc_cmd->list, cbuf); continue;
}
xri = lpfc_cmd->cur_iocbq.sli4_xritag;
inserted = 0;
prev_iobufp = NULL;
list_for_each_entry(iobufp, cbuf, list) { if (xri < iobufp->cur_iocbq.sli4_xritag) { if (prev_iobufp)
list_add(&lpfc_cmd->list,
&prev_iobufp->list); else
list_add(&lpfc_cmd->list, cbuf);
inserted = 1; break;
}
prev_iobufp = iobufp;
} if (!inserted)
list_add_tail(&lpfc_cmd->list, cbuf);
} return cnt;
}
int
lpfc_io_buf_replenish(struct lpfc_hba *phba, struct list_head *cbuf)
{ struct lpfc_sli4_hdw_queue *qp; struct lpfc_io_buf *lpfc_cmd; int idx, cnt; unsignedlong iflags;
/** * lpfc_sli4_io_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_io_sgl_update(struct lpfc_hba *phba)
{ struct lpfc_io_buf *lpfc_ncmd = NULL, *lpfc_ncmd_next = NULL;
uint16_t i, lxri, els_xri_cnt;
uint16_t io_xri_cnt, io_xri_max;
LIST_HEAD(io_sgl_list); int rc, cnt;
/* * update on pci function's allocated nvme xri-sgl list
*/
/* maximum number of xris available for nvme buffers */
els_xri_cnt = lpfc_sli4_get_els_iocb_cnt(phba);
io_xri_max = phba->sli4_hba.max_cfg_param.max_xri - els_xri_cnt;
phba->sli4_hba.io_xri_max = io_xri_max;
/** * lpfc_new_io_buf - IO buffer allocator for HBA with SLI4 IF spec * @phba: Pointer to lpfc hba data structure. * @num_to_alloc: The requested number of buffers to allocate. * * This routine allocates nvme buffers for device with SLI-4 interface spec, * the nvme buffer contains all the necessary information needed to initiate * an I/O. After allocating up to @num_to_allocate IO buffers and put * them on a list, it post them to the port by using SGL block post. * * Return codes: * int - number of IO buffers that were allocated and posted. * 0 = failure, less than num_to_alloc is a partial failure.
**/ int
lpfc_new_io_buf(struct lpfc_hba *phba, int num_to_alloc)
{ struct lpfc_io_buf *lpfc_ncmd; struct lpfc_iocbq *pwqeq;
uint16_t iotag, lxri = 0; int bcnt, num_posted;
LIST_HEAD(prep_nblist);
LIST_HEAD(post_nblist);
LIST_HEAD(nvme_nblist);
phba->sli4_hba.io_xri_cnt = 0; for (bcnt = 0; bcnt < num_to_alloc; bcnt++) {
lpfc_ncmd = kzalloc(sizeof(*lpfc_ncmd), GFP_KERNEL); if (!lpfc_ncmd) break; /* * Get memory from the pci pool to map the virt space to * pci bus space for an I/O. The DMA buffer includes the * number of SGE's necessary to support the sg_tablesize.
*/
lpfc_ncmd->data = dma_pool_zalloc(phba->lpfc_sg_dma_buf_pool,
GFP_KERNEL,
&lpfc_ncmd->dma_handle); if (!lpfc_ncmd->data) {
kfree(lpfc_ncmd); break;
}
if (phba->cfg_xpsgl && !phba->nvmet_support) {
INIT_LIST_HEAD(&lpfc_ncmd->dma_sgl_xtra_list);
} else { /* * 4K Page alignment is CRITICAL to BlockGuard, double * check to be sure.
*/ if ((phba->sli3_options & LPFC_SLI3_BG_ENABLED) &&
(((unsignedlong)(lpfc_ncmd->data) &
(unsignedlong)(SLI4_PAGE_SIZE - 1)) != 0)) {
lpfc_printf_log(phba, KERN_ERR,
LOG_TRACE_EVENT, "3369 Memory alignment err: " "addr=%lx\n",
(unsignedlong)lpfc_ncmd->data);
dma_pool_free(phba->lpfc_sg_dma_buf_pool,
lpfc_ncmd->data,
lpfc_ncmd->dma_handle);
kfree(lpfc_ncmd); break;
}
}
/* add the nvme buffer to a post list */
list_add_tail(&lpfc_ncmd->list, &post_nblist);
phba->sli4_hba.io_xri_cnt++;
}
lpfc_printf_log(phba, KERN_INFO, LOG_NVME, "6114 Allocate %d out of %d requested new NVME " "buffers of size x%zu bytes\n", bcnt, num_to_alloc, sizeof(*lpfc_ncmd));
/* post the list of nvme buffer sgls to port if available */ if (!list_empty(&post_nblist))
num_posted = lpfc_sli4_post_io_sgl_list(
phba, &post_nblist, bcnt); else
num_posted = 0;
if (!vport->vmid_priority_range) {
kfree(vport->vmid); return -ENOMEM;
}
hash_init(vport->hash_table);
} return 0;
}
/** * 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 = NULL; struct scsi_host_template *template; int error = 0; int i;
uint64_t wwn; bool use_no_reset_hba = false; int rc;
u8 if_type;
if (lpfc_no_hba_reset_cnt) { if (phba->sli_rev < LPFC_SLI_REV4 &&
dev == &phba->pcidev->dev) { /* Reset the port first */
lpfc_sli_brdrestart(phba);
rc = lpfc_sli_chipset_init(phba); if (rc) return NULL;
}
wwn = lpfc_get_wwpn(phba);
}
for (i = 0; i < lpfc_no_hba_reset_cnt; i++) { if (wwn == lpfc_no_hba_reset[i]) {
lpfc_printf_log(phba, KERN_ERR,
LOG_TRACE_EVENT, "6020 Setting use_no_reset port=%llx\n",
wwn);
use_no_reset_hba = true; break;
}
}
/* Seed template for SCSI host registration */ if (dev == &phba->pcidev->dev) { if (phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP) { /* Seed physical port template */ template = &lpfc_template;
if (use_no_reset_hba) /* template is for a no reset SCSI Host */
template->eh_host_reset_handler = NULL;
/* Seed updated value of sg_tablesize */
template->sg_tablesize = lpfc_get_sg_tablesize(phba);
} else { /* NVMET is for physical port only */ template = &lpfc_template_nvme;
}
} else { /* Seed vport template */ template = &lpfc_vport_template;
/* Seed updated value of sg_tablesize */
template->sg_tablesize = lpfc_get_sg_tablesize(phba);
}
shost = scsi_host_alloc(template, sizeof(struct lpfc_vport)); if (!shost) goto out;
shost->dma_boundary =
phba->sli4_hba.pc_sli4_params.sge_supp_len-1;
} else /* SLI-3 has a limited number of hardware queues (3), * thus there is only one for FCP processing.
*/
shost->nr_hw_queues = 1;
/* * 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;
}
/** * 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_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, unsignedlong 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 (test_bit(FC_UNLOADING, &vport->load_flag)) {
stat = 1; goto finished;
} if (time >= secs_to_jiffies(30)) {
lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "0461 Scanning longer than 30 " "seconds. Continuing initialization\n");
stat = 1; goto finished;
} if (time >= secs_to_jiffies(15) &&
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 (!atomic_read(&vport->fc_map_cnt) &&
time < secs_to_jiffies(2)) goto finished; if ((phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) != 0) goto finished;
fc_host_supported_speeds(shost) = 0; /* * Avoid reporting supported link speed for FCoE as it can't be * controlled via FCoE.
*/ if (test_bit(HBA_FCOE_MODE, &phba->hba_flag)) return;
if (phba->lmt & LMT_256Gb)
fc_host_supported_speeds(shost) |= FC_PORTSPEED_256GBIT; if (phba->lmt & LMT_128Gb)
fc_host_supported_speeds(shost) |= FC_PORTSPEED_128GBIT; if (phba->lmt & LMT_64Gb)
fc_host_supported_speeds(shost) |= FC_PORTSPEED_64GBIT; if (phba->lmt & LMT_32Gb)
fc_host_supported_speeds(shost) |= FC_PORTSPEED_32GBIT; 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;
}
/** * 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().
*/
/* 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;
/** * 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.
**/ staticvoid
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.
**/ staticvoid
lpfc_stop_port_s4(struct lpfc_hba *phba)
{ /* Reset some HBA SLI4 setup states */
lpfc_stop_hba_timers(phba); if (phba->pport)
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);
if (phba->wq)
flush_workqueue(phba->wq);
}
/** * 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)
{ unsignedlong 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 * @t: Timer context used to obtain the pointer to lpfc hba data structure. * * 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.
**/ staticvoid
lpfc_sli4_fcf_redisc_wait_tmo(struct timer_list *t)
{ struct lpfc_hba *phba = timer_container_of(phba, t, fcf.redisc_wait);
/* 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_vmid_poll - VMID timeout detection * @t: Timer context used to obtain the pointer to lpfc hba data structure. * * This routine is invoked when there is no I/O on by a VM for the specified * amount of time. When this situation is detected, the VMID has to be * deregistered from the switch and all the local resources freed. The VMID * will be reassigned to the VM once the I/O begins.
**/ staticvoid
lpfc_vmid_poll(struct timer_list *t)
{ struct lpfc_hba *phba = timer_container_of(phba, t,
inactive_vmid_poll);
u32 wake_up = 0;
/* check if there is a need to issue QFPA */ if (phba->pport->vmid_priority_tagging) {
wake_up = 1;
phba->pport->work_port_events |= WORKER_CHECK_VMID_ISSUE_QFPA;
}
/* Is the vmid inactivity timer enabled */ if (phba->pport->vmid_inactivity_timeout ||
test_bit(FC_DEREGISTER_ALL_APP_ID, &phba->pport->load_flag)) {
wake_up = 1;
phba->pport->work_port_events |= WORKER_CHECK_INACTIVE_VMID;
}
if (wake_up)
lpfc_worker_wake_up(phba);
/* restart the timer for the next iteration */
mod_timer(&phba->inactive_vmid_poll,
jiffies + secs_to_jiffies(LPFC_VMID_TIMER));
}
/** * 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.
**/ staticvoid
lpfc_sli4_parse_latt_fault(struct lpfc_hba *phba, struct lpfc_acqe_link *acqe_link)
{ switch (bf_get(lpfc_acqe_fc_la_att_type, acqe_link)) { case LPFC_FC_LA_TYPE_LINK_DOWN: case LPFC_FC_LA_TYPE_TRUNKING_EVENT: case LPFC_FC_LA_TYPE_ACTIVATE_FAIL: case LPFC_FC_LA_TYPE_LINK_RESET_PRTCL_EVT: break; default: 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: case LPFC_ASYNC_LINK_FAULT_LR_LRR: break; default:
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "0398 Unknown link fault code: x%x\n",
bf_get(lpfc_acqe_link_fault, acqe_link)); break;
} break;
}
}
/** * 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_TRACE_EVENT, "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_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;
if (phba->sli_rev <= LPFC_SLI_REV3) { 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;
}
} else { if (phba->sli4_hba.link_state.logical_speed)
link_speed =
phba->sli4_hba.link_state.logical_speed; else
link_speed = phba->sli4_hba.link_state.speed;
} 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_ASYNC_LINK_SPEED_ZERO:
port_speed = 0; break; case LPFC_ASYNC_LINK_SPEED_10MBPS:
port_speed = 10; break; case LPFC_ASYNC_LINK_SPEED_100MBPS:
port_speed = 100; break; case LPFC_ASYNC_LINK_SPEED_1GBPS:
port_speed = 1000; break; case LPFC_ASYNC_LINK_SPEED_10GBPS:
port_speed = 10000; break; case LPFC_ASYNC_LINK_SPEED_20GBPS:
port_speed = 20000; break; case LPFC_ASYNC_LINK_SPEED_25GBPS:
port_speed = 25000; break; case LPFC_ASYNC_LINK_SPEED_40GBPS:
port_speed = 40000; break; case LPFC_ASYNC_LINK_SPEED_100GBPS:
port_speed = 100000; break; default:
port_speed = 0;
} break; case LPFC_TRAILER_CODE_FC: switch (speed_code) { case LPFC_FC_LA_SPEED_UNKNOWN:
port_speed = 0; break; case LPFC_FC_LA_SPEED_1G:
port_speed = 1000; break; case LPFC_FC_LA_SPEED_2G:
port_speed = 2000; break; case LPFC_FC_LA_SPEED_4G:
port_speed = 4000; break; case LPFC_FC_LA_SPEED_8G:
port_speed = 8000; break; case LPFC_FC_LA_SPEED_10G:
port_speed = 10000; break; case LPFC_FC_LA_SPEED_16G:
port_speed = 16000; break; case LPFC_FC_LA_SPEED_32G:
port_speed = 32000; break; case LPFC_FC_LA_SPEED_64G:
port_speed = 64000; break; case LPFC_FC_LA_SPEED_128G:
port_speed = 128000; break; case LPFC_FC_LA_SPEED_256G:
port_speed = 256000; 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.
**/ staticvoid
lpfc_sli4_async_link_evt(struct lpfc_hba *phba, struct lpfc_acqe_link *acqe_link)
{
LPFC_MBOXQ_t *pmb;
MAILBOX_t *mb; struct lpfc_mbx_read_top *la;
uint8_t att_type; int rc;
/* Cleanup any outstanding ELS commands */
lpfc_els_flush_all_cmd(phba);
/* Block ELS IOCBs until we have done process link event */
phba->sli4_hba.els_wq->pring->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, pmb->ctx_buf);
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 (!test_bit(HBA_FCOE_MODE, &phba->hba_flag)) {
rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT); if (rc == MBX_NOT_FINISHED) goto out_free_pmb; 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.
*/ /* Initialize completion status */
mb = &pmb->u.mb;
mb->mbxStatus = MBX_SUCCESS;
/* Parse port fault information field */
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,
(bf_get(lpfc_acqe_link_speed, acqe_link)));
/** * lpfc_async_link_speed_to_read_top - Parse async evt link speed code to read * topology. * @phba: pointer to lpfc hba data structure. * @speed_code: asynchronous event link speed code. * * This routine is to parse the giving SLI4 async event link speed code into * value of Read topology link speed. * * Return: link speed in terms of Read topology.
**/ static uint8_t
lpfc_async_link_speed_to_read_top(struct lpfc_hba *phba, uint8_t speed_code)
{
uint8_t port_speed;
switch (speed_code) { case LPFC_FC_LA_SPEED_1G:
port_speed = LPFC_LINK_SPEED_1GHZ; break; case LPFC_FC_LA_SPEED_2G:
port_speed = LPFC_LINK_SPEED_2GHZ; break; case LPFC_FC_LA_SPEED_4G:
port_speed = LPFC_LINK_SPEED_4GHZ; break; case LPFC_FC_LA_SPEED_8G:
port_speed = LPFC_LINK_SPEED_8GHZ; break; case LPFC_FC_LA_SPEED_16G:
port_speed = LPFC_LINK_SPEED_16GHZ; break; case LPFC_FC_LA_SPEED_32G:
port_speed = LPFC_LINK_SPEED_32GHZ; break; case LPFC_FC_LA_SPEED_64G:
port_speed = LPFC_LINK_SPEED_64GHZ; break; case LPFC_FC_LA_SPEED_128G:
port_speed = LPFC_LINK_SPEED_128GHZ; break; case LPFC_FC_LA_SPEED_256G:
port_speed = LPFC_LINK_SPEED_256GHZ; break; default:
port_speed = 0; break;
}
return port_speed;
}
void
lpfc_cgn_dump_rxmonitor(struct lpfc_hba *phba)
{ if (!phba->rx_monitor) {
lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT, "4411 Rx Monitor Info is empty.\n");
} else {
lpfc_rx_monitor_report(phba, phba->rx_monitor, NULL, 0,
LPFC_MAX_RXMONITOR_DUMP);
}
}
/** * lpfc_cgn_update_stat - Save data into congestion stats buffer * @phba: pointer to lpfc hba data structure. * @dtag: FPIN descriptor received * * Increment the FPIN received counter/time when it happens.
*/ void
lpfc_cgn_update_stat(struct lpfc_hba *phba, uint32_t dtag)
{ struct lpfc_cgn_info *cp;
u32 value;
/* Make sure we have a congestion info buffer */ if (!phba->cgn_i) return;
cp = (struct lpfc_cgn_info *)phba->cgn_i->virt;
/* Update congestion statistics */ switch (dtag) { case ELS_DTAG_LNK_INTEGRITY:
le32_add_cpu(&cp->link_integ_notification, 1);
lpfc_cgn_update_tstamp(phba, &cp->stat_lnk); break; case ELS_DTAG_DELIVERY:
le32_add_cpu(&cp->delivery_notification, 1);
lpfc_cgn_update_tstamp(phba, &cp->stat_delivery); break; case ELS_DTAG_PEER_CONGEST:
le32_add_cpu(&cp->cgn_peer_notification, 1);
lpfc_cgn_update_tstamp(phba, &cp->stat_peer); break; case ELS_DTAG_CONGESTION:
le32_add_cpu(&cp->cgn_notification, 1);
lpfc_cgn_update_tstamp(phba, &cp->stat_fpin);
} if (phba->cgn_fpin_frequency &&
phba->cgn_fpin_frequency != LPFC_FPIN_INIT_FREQ) {
value = LPFC_CGN_TIMER_TO_MIN / phba->cgn_fpin_frequency;
cp->cgn_stat_npm = value;
}
value = lpfc_cgn_calc_crc32(cp, LPFC_CGN_INFO_SZ,
LPFC_CGN_CRC32_SEED);
cp->cgn_info_crc = cpu_to_le32(value);
}
/** * lpfc_cgn_update_tstamp - Update cmf timestamp * @phba: pointer to lpfc hba data structure. * @ts: structure to write the timestamp to.
*/ void
lpfc_cgn_update_tstamp(struct lpfc_hba *phba, struct lpfc_cgn_ts *ts)
{ struct timespec64 cur_time; struct tm tm_val;
/** * lpfc_cmf_stats_timer - Save data into registered congestion buffer * @timer: Timer cookie to access lpfc private data * * Save the congestion event data every minute. * On the hour collapse all the minute data into hour data. Every day * collapse all the hour data into daily data. Separate driver * and fabrc congestion event counters that will be saved out * to the registered congestion buffer every minute.
*/ staticenum hrtimer_restart
lpfc_cmf_stats_timer(struct hrtimer *timer)
{ struct lpfc_hba *phba; struct lpfc_cgn_info *cp;
uint32_t i, index;
uint16_t value, mvalue;
uint64_t bps;
uint32_t mbps;
uint32_t dvalue, wvalue, lvalue, avalue;
uint64_t latsum;
__le16 *ptr;
__le32 *lptr;
__le16 *mptr;
phba = container_of(timer, struct lpfc_hba, cmf_stats_timer); /* Make sure we have a congestion info buffer */ if (!phba->cgn_i) return HRTIMER_NORESTART;
cp = (struct lpfc_cgn_info *)phba->cgn_i->virt;
/* We should get to this point in the routine on 1 minute intervals */
lpfc_cgn_update_tstamp(phba, &cp->base_time);
if (phba->cgn_fpin_frequency &&
phba->cgn_fpin_frequency != LPFC_FPIN_INIT_FREQ) {
value = LPFC_CGN_TIMER_TO_MIN / phba->cgn_fpin_frequency;
cp->cgn_stat_npm = value;
}
/* Read and clear the latency counters for this minute */
lvalue = atomic_read(&phba->cgn_latency_evt_cnt);
latsum = atomic64_read(&phba->cgn_latency_evt);
atomic_set(&phba->cgn_latency_evt_cnt, 0);
atomic64_set(&phba->cgn_latency_evt, 0);
/* We need to store MB/sec bandwidth in the congestion information. * block_cnt is count of 512 byte blocks for the entire minute, * bps will get bytes per sec before finally converting to MB/sec.
*/
bps = div_u64(phba->rx_block_cnt, LPFC_SEC_MIN) * 512;
phba->rx_block_cnt = 0;
mvalue = bps / (1024 * 1024); /* convert to MB/sec */
/* Fill in default LUN qdepth */
value = (uint16_t)(phba->pport->cfg_lun_queue_depth);
cp->cgn_lunq = cpu_to_le16(value);
/* Record congestion buffer info - every minute * cgn_driver_evt_cnt (Driver events) * cgn_fabric_warn_cnt (Congestion Warnings) * cgn_latency_evt_cnt / cgn_latency_evt (IO Latency) * cgn_fabric_alarm_cnt (Congestion Alarms)
*/
index = ++cp->cgn_index_minute; if (cp->cgn_index_minute == LPFC_MIN_HOUR) {
cp->cgn_index_minute = 0;
index = 0;
}
/* Get the number of driver events in this sample and reset counter */
dvalue = atomic_read(&phba->cgn_driver_evt_cnt);
atomic_set(&phba->cgn_driver_evt_cnt, 0);
/* Get the number of warning events - FPIN and Signal for this minute */
wvalue = 0; if ((phba->cgn_reg_fpin & LPFC_CGN_FPIN_WARN) ||
phba->cgn_reg_signal == EDC_CG_SIG_WARN_ONLY ||
phba->cgn_reg_signal == EDC_CG_SIG_WARN_ALARM)
wvalue = atomic_read(&phba->cgn_fabric_warn_cnt);
atomic_set(&phba->cgn_fabric_warn_cnt, 0);
/* Get the number of alarm events - FPIN and Signal for this minute */
avalue = 0; if ((phba->cgn_reg_fpin & LPFC_CGN_FPIN_ALARM) ||
phba->cgn_reg_signal == EDC_CG_SIG_WARN_ALARM)
avalue = atomic_read(&phba->cgn_fabric_alarm_cnt);
atomic_set(&phba->cgn_fabric_alarm_cnt, 0);
/* Collect the driver, warning, alarm and latency counts for this * minute into the driver congestion buffer.
*/
ptr = &cp->cgn_drvr_min[index];
value = (uint16_t)dvalue;
*ptr = cpu_to_le16(value);
ptr = &cp->cgn_warn_min[index];
value = (uint16_t)wvalue;
*ptr = cpu_to_le16(value);
ptr = &cp->cgn_alarm_min[index];
value = (uint16_t)avalue;
*ptr = cpu_to_le16(value);
/* Every hour */ if ((phba->cgn_evt_minute % LPFC_MIN_HOUR) == 0) { /* Record congestion buffer info - every hour * Collapse all minutes into an hour
*/
index = ++cp->cgn_index_hour; if (cp->cgn_index_hour == LPFC_HOUR_DAY) {
cp->cgn_index_hour = 0;
index = 0;
}
dvalue = 0;
wvalue = 0;
lvalue = 0;
avalue = 0;
mvalue = 0;
mbps = 0; for (i = 0; i < LPFC_MIN_HOUR; i++) {
dvalue += le16_to_cpu(cp->cgn_drvr_min[i]);
wvalue += le16_to_cpu(cp->cgn_warn_min[i]);
lvalue += le32_to_cpu(cp->cgn_latency_min[i]);
mbps += le16_to_cpu(cp->cgn_bw_min[i]);
avalue += le16_to_cpu(cp->cgn_alarm_min[i]);
} if (lvalue) /* Avg of latency averages */
lvalue /= LPFC_MIN_HOUR; if (mbps) /* Avg of Bandwidth averages */
mvalue = mbps / LPFC_MIN_HOUR;
/* Every day */ if ((phba->cgn_evt_minute % LPFC_MIN_DAY) == 0) { /* Record congestion buffer info - every hour * Collapse all hours into a day. Rotate days * after LPFC_MAX_CGN_DAYS.
*/
index = ++cp->cgn_index_day; if (cp->cgn_index_day == LPFC_MAX_CGN_DAYS) {
cp->cgn_index_day = 0;
index = 0;
}
dvalue = 0;
wvalue = 0;
lvalue = 0;
mvalue = 0;
mbps = 0;
avalue = 0; for (i = 0; i < LPFC_HOUR_DAY; i++) {
dvalue += le32_to_cpu(cp->cgn_drvr_hr[i]);
wvalue += le32_to_cpu(cp->cgn_warn_hr[i]);
lvalue += le32_to_cpu(cp->cgn_latency_hr[i]);
mbps += le16_to_cpu(cp->cgn_bw_hr[i]);
avalue += le32_to_cpu(cp->cgn_alarm_hr[i]);
} if (lvalue) /* Avg of latency averages */
lvalue /= LPFC_HOUR_DAY; if (mbps) /* Avg of Bandwidth averages */
mvalue = mbps / LPFC_HOUR_DAY;
/* Use the frequency found in the last rcv'ed FPIN */
value = phba->cgn_fpin_frequency;
cp->cgn_warn_freq = cpu_to_le16(value);
cp->cgn_alarm_freq = cpu_to_le16(value);
/** * lpfc_calc_cmf_latency - latency from start of rxate timer interval * @phba: The Hba for which this call is being executed. * * The routine calculates the latency from the beginning of the CMF timer * interval to the current point in time. It is called from IO completion * when we exceed our Bandwidth limitation for the time interval.
*/
uint32_t
lpfc_calc_cmf_latency(struct lpfc_hba *phba)
{ struct timespec64 cmpl_time;
uint32_t msec = 0;
ktime_get_real_ts64(&cmpl_time);
/* This routine works on a ms granularity so sec and usec are * converted accordingly.
*/ if (cmpl_time.tv_sec == phba->cmf_latency.tv_sec) {
msec = (cmpl_time.tv_nsec - phba->cmf_latency.tv_nsec) /
NSEC_PER_MSEC;
} else { if (cmpl_time.tv_nsec >= phba->cmf_latency.tv_nsec) {
msec = (cmpl_time.tv_sec -
phba->cmf_latency.tv_sec) * MSEC_PER_SEC;
msec += ((cmpl_time.tv_nsec -
phba->cmf_latency.tv_nsec) / NSEC_PER_MSEC);
} else {
msec = (cmpl_time.tv_sec - phba->cmf_latency.tv_sec -
1) * MSEC_PER_SEC;
msec += (((NSEC_PER_SEC - phba->cmf_latency.tv_nsec) +
cmpl_time.tv_nsec) / NSEC_PER_MSEC);
}
} return msec;
}
/** * lpfc_cmf_timer - This is the timer function for one congestion * rate interval. * @timer: Pointer to the high resolution timer that expired
*/ staticenum hrtimer_restart
lpfc_cmf_timer(struct hrtimer *timer)
{ struct lpfc_hba *phba = container_of(timer, struct lpfc_hba,
cmf_timer); struct rx_info_entry entry;
uint32_t io_cnt;
uint32_t busy, max_read;
uint64_t total, rcv, lat, mbpi, extra, cnt; int timer_interval = LPFC_CMF_INTERVAL;
uint32_t ms; struct lpfc_cgn_stat *cgs; int cpu;
/* Only restart the timer if congestion mgmt is on */ if (phba->cmf_active_mode == LPFC_CFG_OFF ||
!phba->cmf_latency.tv_sec) {
lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT, "6224 CMF timer exit: %d %lld\n",
phba->cmf_active_mode,
(uint64_t)phba->cmf_latency.tv_sec); return HRTIMER_NORESTART;
}
/* If pport is not ready yet, just exit and wait for * the next timer cycle to hit.
*/ if (!phba->pport) goto skip;
/* Do not block SCSI IO while in the timer routine since * total_bytes will be cleared
*/
atomic_set(&phba->cmf_stop_io, 1);
/* First we need to calculate the actual ms between * the last timer interrupt and this one. We ask for * LPFC_CMF_INTERVAL, however the actual time may * vary depending on system overhead.
*/
ms = lpfc_calc_cmf_latency(phba);
/* Immediately after we calculate the time since the last * timer interrupt, set the start time for the next * interrupt
*/
ktime_get_real_ts64(&phba->cmf_latency);
/* Collect all the stats from the prior timer interval */
total = 0;
io_cnt = 0;
lat = 0;
rcv = 0;
for_each_present_cpu(cpu) {
cgs = per_cpu_ptr(phba->cmf_stat, cpu);
total += atomic64_xchg(&cgs->total_bytes, 0);
io_cnt += atomic_xchg(&cgs->rx_io_cnt, 0);
lat += atomic64_xchg(&cgs->rx_latency, 0);
rcv += atomic64_xchg(&cgs->rcv_bytes, 0);
}
/* Before we issue another CMF_SYNC_WQE, retrieve the BW * returned from the last CMF_SYNC_WQE issued, from * cmf_last_sync_bw. This will be the target BW for * this next timer interval.
*/ if (phba->cmf_active_mode == LPFC_CFG_MANAGED &&
phba->link_state != LPFC_LINK_DOWN &&
test_bit(HBA_SETUP, &phba->hba_flag)) {
mbpi = phba->cmf_last_sync_bw;
phba->cmf_last_sync_bw = 0;
extra = 0;
/* Calculate any extra bytes needed to account for the * timer accuracy. If we are less than LPFC_CMF_INTERVAL * calculate the adjustment needed for total to reflect * a full LPFC_CMF_INTERVAL.
*/ if (ms && ms < LPFC_CMF_INTERVAL) {
cnt = div_u64(total, ms); /* bytes per ms */
cnt *= LPFC_CMF_INTERVAL; /* what total should be */
extra = cnt - total;
}
lpfc_issue_cmf_sync_wqe(phba, LPFC_CMF_INTERVAL, total + extra);
} else { /* For Monitor mode or link down we want mbpi * to be the full link speed
*/
mbpi = phba->cmf_link_byte_count;
extra = 0;
}
phba->cmf_timer_cnt++;
if (io_cnt) { /* Update congestion info buffer latency in us */
atomic_add(io_cnt, &phba->cgn_latency_evt_cnt);
atomic64_add(lat, &phba->cgn_latency_evt);
}
busy = atomic_xchg(&phba->cmf_busy, 0);
max_read = atomic_xchg(&phba->rx_max_read_cnt, 0);
/* Calculate MBPI for the next timer interval */ if (mbpi) { if (mbpi > phba->cmf_link_byte_count ||
phba->cmf_active_mode == LPFC_CFG_MONITOR)
mbpi = phba->cmf_link_byte_count;
/* Change max_bytes_per_interval to what the prior * CMF_SYNC_WQE cmpl indicated.
*/ if (mbpi != phba->cmf_max_bytes_per_interval)
phba->cmf_max_bytes_per_interval = mbpi;
}
if (phba->cmf_active_mode == LPFC_CFG_MONITOR) { /* If Monitor mode, check if we are oversubscribed * against the full line rate.
*/ if (mbpi && total > mbpi)
atomic_inc(&phba->cgn_driver_evt_cnt);
}
phba->rx_block_cnt += div_u64(rcv, 512); /* save 512 byte block cnt */
/* Since total_bytes has already been zero'ed, its okay to unblock * after max_bytes_per_interval is setup.
*/ if (atomic_xchg(&phba->cmf_bw_wait, 0))
queue_work(phba->wq, &phba->unblock_request_work);
/* SCSI IO is now unblocked */
atomic_set(&phba->cmf_stop_io, 0);
if (phba->cmf_active_mode != LPFC_CFG_OFF)
lpfc_cmf_signal_init(phba);
if (port_fault)
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "3202 trunk error:0x%x (%s) seen on port0:%s " /* * SLI-4: We have only 0xA error codes * defined as of now. print an appropriate * message in case driver needs to be updated.
*/ "port1:%s port2:%s port3:%s\n", err, err > 0xA ? "UNDEFINED. update driver." : trunk_errmsg[err],
trunk_port_fault(0), trunk_port_fault(1),
trunk_port_fault(2), trunk_port_fault(3));
}
/** * 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.
**/ staticvoid
lpfc_sli4_async_fc_evt(struct lpfc_hba *phba, struct lpfc_acqe_fc_la *acqe_fc)
{
LPFC_MBOXQ_t *pmb;
MAILBOX_t *mb; struct lpfc_mbx_read_top *la; char *log_level; int rc;
if (bf_get(lpfc_trailer_type, acqe_fc) !=
LPFC_FC_LA_EVENT_TYPE_FC_LINK) {
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "2895 Non FC link Event detected.(%d)\n",
bf_get(lpfc_trailer_type, acqe_fc)); return;
}
if (bf_get(lpfc_acqe_fc_la_att_type, acqe_fc) ==
LPFC_FC_LA_TYPE_TRUNKING_EVENT) {
lpfc_update_trunk_link_status(phba, 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.link_status =
bf_get(lpfc_acqe_fc_la_link_status, acqe_fc);
/* * Only select attention types need logical speed modification to what * was previously set.
*/ if (phba->sli4_hba.link_state.status >= LPFC_FC_LA_TYPE_LINK_UP &&
phba->sli4_hba.link_state.status < LPFC_FC_LA_TYPE_ACTIVATE_FAIL) { if (bf_get(lpfc_acqe_fc_la_att_type, acqe_fc) ==
LPFC_FC_LA_TYPE_LINK_DOWN)
phba->sli4_hba.link_state.logical_speed = 0; elseif (!phba->sli4_hba.conf_trunk)
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:x%x Link Status:x%x\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,
phba->sli4_hba.link_state.link_status);
/* * The following attention types are informational only, providing * further details about link status. Overwrite the value of * link_state.status appropriately. No further action is required.
*/ if (phba->sli4_hba.link_state.status >= LPFC_FC_LA_TYPE_ACTIVATE_FAIL) { switch (phba->sli4_hba.link_state.status) { case LPFC_FC_LA_TYPE_ACTIVATE_FAIL:
log_level = KERN_WARNING;
phba->sli4_hba.link_state.status =
LPFC_FC_LA_TYPE_LINK_DOWN; break; case LPFC_FC_LA_TYPE_LINK_RESET_PRTCL_EVT: /* * During bb credit recovery establishment, receiving * this attention type is normal. Link Up attention * type is expected to occur before this informational * attention type so keep the Link Up status.
*/
log_level = KERN_INFO;
phba->sli4_hba.link_state.status =
LPFC_FC_LA_TYPE_LINK_UP; break; default:
log_level = KERN_INFO; break;
}
lpfc_log_msg(phba, log_level, LOG_SLI, "2992 Async FC event - Informational Link " "Attention Type x%x\n",
bf_get(lpfc_acqe_fc_la_att_type, acqe_fc)); return;
}
pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!pmb) {
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "2897 The mboxq allocation failed\n"); return;
}
rc = lpfc_mbox_rsrc_prep(phba, pmb); if (rc) {
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "2898 The mboxq prep failed\n"); goto out_free_pmb;
}
/* Cleanup any outstanding ELS commands */
lpfc_els_flush_all_cmd(phba);
/* Block ELS IOCBs until we have done process link event */
phba->sli4_hba.els_wq->pring->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, pmb->ctx_buf);
pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;
pmb->vport = phba->pport;
if (phba->sli4_hba.link_state.status != LPFC_FC_LA_TYPE_LINK_UP) {
phba->link_flag &= ~(LS_MDS_LINK_DOWN | LS_MDS_LOOPBACK);
switch (phba->sli4_hba.link_state.status) { case LPFC_FC_LA_TYPE_MDS_LINK_DOWN:
phba->link_flag |= LS_MDS_LINK_DOWN; break; case LPFC_FC_LA_TYPE_MDS_LOOPBACK:
phba->link_flag |= LS_MDS_LOOPBACK; break; default: break;
}
/* 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_state,
&misconfigured->theEvent);
operational = bf_get(lpfc_sli_misconfigured_port0_op,
&misconfigured->theEvent); break; case LPFC_LINK_NUMBER_1:
status = bf_get(lpfc_sli_misconfigured_port1_state,
&misconfigured->theEvent);
operational = bf_get(lpfc_sli_misconfigured_port1_op,
&misconfigured->theEvent); break; case LPFC_LINK_NUMBER_2:
status = bf_get(lpfc_sli_misconfigured_port2_state,
&misconfigured->theEvent);
operational = bf_get(lpfc_sli_misconfigured_port2_op,
&misconfigured->theEvent); break; case LPFC_LINK_NUMBER_3:
status = bf_get(lpfc_sli_misconfigured_port3_state,
&misconfigured->theEvent);
operational = bf_get(lpfc_sli_misconfigured_port3_op,
&misconfigured->theEvent); break; default:
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "3296 " "LPFC_SLI_EVENT_TYPE_MISCONFIGURED " "event: Invalid link %d",
phba->sli4_hba.lnk_info.lnk_no); return;
}
/* Skip if optic state unchanged */ if (phba->sli4_hba.lnk_info.optic_state == status) return;
switch (status) { case LPFC_SLI_EVENT_STATUS_VALID:
sprintf(message, "Physical Link is functional"); break; 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; case LPFC_SLI_EVENT_STATUS_UNQUALIFIED:
sprintf(message, "Unqualified optics - Replace with " "Avago optics for Warranty and Technical " "Support - Link is%s operational",
(operational) ? " not" : ""); break; case LPFC_SLI_EVENT_STATUS_UNCERTIFIED:
sprintf(message, "Uncertified optics - Replace with " "Avago-certified optics to enable link " "operation - Link is%s operational",
(operational) ? " not" : ""); break; default: /* firmware is reporting a status we don't know about */
sprintf(message, "Unknown event status x%02x", status); break;
}
/* Issue READ_CONFIG mbox command to refresh supported speeds */
rc = lpfc_sli4_read_config(phba); if (rc) {
phba->lmt = 0;
lpfc_printf_log(phba, KERN_ERR,
LOG_TRACE_EVENT, "3194 Unable to retrieve supported " "speeds, rc = 0x%x\n", rc);
}
rc = lpfc_sli4_refresh_params(phba); if (rc) {
lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "3174 Unable to update pls support, " "rc x%x\n", rc);
}
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]);
lpfc_host_supported_speeds_set(shost);
}
}
lpfc_destroy_vport_work_array(phba, vports);
phba->sli4_hba.lnk_info.optic_state = status;
lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "3176 Port Name %c %s\n", port_name, message); break; case LPFC_SLI_EVENT_TYPE_REMOTE_DPORT:
lpfc_printf_log(phba, KERN_INFO, LOG_SLI, "3192 Remote DPort Test Initiated - " "Event Data1:x%08x Event Data2: x%08x\n",
acqe_sli->event_data1, acqe_sli->event_data2); break; case LPFC_SLI_EVENT_TYPE_PORT_PARAMS_CHG: /* Call FW to obtain active parms */
lpfc_sli4_cgn_parm_chg_evt(phba); break; case LPFC_SLI_EVENT_TYPE_MISCONF_FAWWN: /* Misconfigured WWN. Reports that the SLI Port is configured * to use FA-WWN, but the attached device doesn’t support it. * Event Data1 - N.A, Event Data2 - N.A * This event only happens on the physical port.
*/
lpfc_log_msg(phba, KERN_WARNING, LOG_SLI | LOG_DISCOVERY, "2699 Misconfigured FA-PWWN - Attached device " "does not support FA-PWWN\n");
phba->sli4_hba.fawwpn_flag &= ~LPFC_FAWWPN_FABRIC;
memset(phba->pport->fc_portname.u.wwn, 0, sizeof(struct lpfc_name)); break; case LPFC_SLI_EVENT_TYPE_EEPROM_FAILURE: /* EEPROM failure. No driver action is required */
lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, "2518 EEPROM failure - " "Event Data1: x%08x Event Data2: x%08x\n",
acqe_sli->event_data1, acqe_sli->event_data2); break; case LPFC_SLI_EVENT_TYPE_CGN_SIGNAL: if (phba->cmf_active_mode == LPFC_CFG_OFF) break;
cgn_signal = (struct lpfc_acqe_cgn_signal *)
&acqe_sli->event_data1;
phba->cgn_acqe_cnt++;
/* no threshold for CMF, even 1 signal will trigger an event */
/* Alarm overrides warning, so check that first */ if (cgn_signal->alarm_cnt) { if (phba->cgn_reg_signal == EDC_CG_SIG_WARN_ALARM) { /* Keep track of alarm cnt for CMF_SYNC_WQE */
atomic_add(cgn_signal->alarm_cnt,
&phba->cgn_sync_alarm_cnt);
}
} elseif (cnt) { /* signal action needs to be taken */ if (phba->cgn_reg_signal == EDC_CG_SIG_WARN_ONLY ||
phba->cgn_reg_signal == EDC_CG_SIG_WARN_ALARM) { /* Keep track of warning cnt for CMF_SYNC_WQE */
atomic_add(cnt, &phba->cgn_sync_warn_cnt);
}
} break; case LPFC_SLI_EVENT_TYPE_RD_SIGNAL: /* May be accompanied by a temperature event */
lpfc_printf_log(phba, KERN_INFO,
LOG_SLI | LOG_LINK_EVENT | LOG_LDS_EVENT, "2902 Remote Degrade Signaling: x%08x x%08x " "x%08x\n",
acqe_sli->event_data1, acqe_sli->event_data2,
acqe_sli->event_data3); break; case LPFC_SLI_EVENT_TYPE_RESET_CM_STATS:
lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT, "2905 Reset CM statistics\n");
lpfc_sli4_async_cmstat_evt(phba); break; default:
lpfc_printf_log(phba, KERN_INFO, LOG_SLI, "3193 Unrecognized SLI event, type: 0x%x",
evt_type); break;
}
}
/** * 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.
**/ staticstruct 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 = lpfc_nlp_init(vport, Fabric_DID); if (!ndlp) return NULL; /* Set the node type */
ndlp->nlp_type |= NLP_FABRIC; /* Put ndlp onto node list */
lpfc_enqueue_node(vport, ndlp);
} 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);
set_bit(FC_VPORT_CVL_RCVD, &vport->fc_flag);
return ndlp;
}
/** * lpfc_sli4_perform_all_vport_cvl - Perform clear virtual link on all vports * @phba: 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.
**/ staticvoid
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_async_fip_evt - Process the asynchronous FCoE FIP event * @phba: pointer to lpfc hba data structure. * @acqe_fip: pointer to the async fcoe completion queue entry. * * This routine is to handle the SLI4 asynchronous fcoe event.
**/ staticvoid
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; 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_TRACE_EVENT, "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. */ if (test_bit(FCF_TS_INPROG, &phba->hba_flag)) break;
spin_lock_irq(&phba->hbalock); /* If fast FCF failover rescan event is pending, do nothing */ if (phba->fcf.fcf_flag & (FCF_REDISC_EVT | FCF_REDISC_PEND)) {
spin_unlock_irq(&phba->hbalock); break;
}
/* If the FCF has been in discovered state, do nothing. */ if (phba->fcf.fcf_flag & FCF_SCAN_DONE) {
spin_unlock_irq(&phba->hbalock); break;
}
spin_unlock_irq(&phba->hbalock);
case LPFC_FIP_EVENT_TYPE_FCF_TABLE_FULL:
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "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_TRACE_EVENT, "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) &&
(phba->fcf.current_rec.fcf_indx != acqe_fip->index)) {
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.
*/
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 " "FCF DEAD event: evt_tag:x%x, fcf_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_TRACE_EVENT, "2772 Issue FCF rediscover mailbox " "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);
} break; case LPFC_FIP_EVENT_TYPE_CVL:
phba->fcoe_cvl_eventtag = acqe_fip->event_tag;
lpfc_printf_log(phba, KERN_ERR,
LOG_TRACE_EVENT, "2718 Clear Virtual Link Received for VPI 0x%x" " tag 0x%x\n", acqe_fip->index, acqe_fip->event_tag);
vports = lpfc_create_vport_work_array(phba); if (vports) { for (i = 0; i <= phba->max_vports && vports[i] != NULL;
i++) { if (!test_bit(FC_VPORT_CVL_RCVD,
&vports[i]->fc_flag) &&
vports[i]->port_state > LPFC_FDISC) {
active_vlink_present = 1; break;
}
}
lpfc_destroy_vport_work_array(phba, vports);
}
/* * Don't re-instantiate if vport is marked for deletion. * If we are here first then vport_delete is going to wait * for discovery to complete.
*/ if (!test_bit(FC_UNLOADING, &vport->load_flag) &&
active_vlink_present) { /* * If there are other active VLinks present, * re-instantiate the Vlink using FDISC.
*/
mod_timer(&ndlp->nlp_delayfunc,
jiffies + secs_to_jiffies(1));
set_bit(NLP_DELAY_TMO, &ndlp->nlp_flag);
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_TRACE_EVENT, "2774 Issue FCF rediscover " "mailbox 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_TRACE_EVENT, "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_dcbx: pointer to the async dcbx completion queue entry. * * This routine is to handle the SLI4 asynchronous dcbx event.
**/ staticvoid
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_TRACE_EVENT, "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_grp5: 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.
**/ staticvoid
lpfc_sli4_async_grp5_evt(struct lpfc_hba *phba, struct lpfc_acqe_grp5 *acqe_grp5)
{
uint16_t prev_ll_spd;
/** * lpfc_sli4_async_cmstat_evt - Process the asynchronous cmstat event * @phba: pointer to lpfc hba data structure. * * This routine is to handle the SLI4 asynchronous cmstat event. A cmstat event * is an asynchronous notification of a request to reset CM stats.
**/ staticvoid
lpfc_sli4_async_cmstat_evt(struct lpfc_hba *phba)
{ if (!phba->cgn_i) return;
lpfc_init_congestion_stat(phba);
}
/** * lpfc_cgn_params_val - Validate FW congestion parameters. * @phba: pointer to lpfc hba data structure. * @p_cfg_param: pointer to FW provided congestion parameters. * * This routine validates the congestion parameters passed * by the FW to the driver via an ACQE event.
**/ staticvoid
lpfc_cgn_params_val(struct lpfc_hba *phba, struct lpfc_cgn_param *p_cfg_param)
{
spin_lock_irq(&phba->hbalock);
if (!lpfc_rangecheck(p_cfg_param->cgn_param_mode, LPFC_CFG_OFF,
LPFC_CFG_MONITOR)) {
lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT, "6225 CMF mode param out of range: %d\n",
p_cfg_param->cgn_param_mode);
p_cfg_param->cgn_param_mode = LPFC_CFG_OFF;
}
/** * lpfc_cgn_params_parse - Process a FW cong parm change event * @phba: pointer to lpfc hba data structure. * @p_cgn_param: pointer to a data buffer with the FW cong params. * @len: the size of pdata in bytes. * * This routine validates the congestion management buffer signature * from the FW, validates the contents and makes corrections for * valid, in-range values. If the signature magic is correct and * after parameter validation, the contents are copied to the driver's * @phba structure. If the magic is incorrect, an error message is * logged.
**/ staticvoid
lpfc_cgn_params_parse(struct lpfc_hba *phba, struct lpfc_cgn_param *p_cgn_param, uint32_t len)
{ struct lpfc_cgn_info *cp;
uint32_t crc, oldmode; char acr_string[4] = {0};
/* Make sure the FW has encoded the correct magic number to * validate the congestion parameter in FW memory.
*/ if (p_cgn_param->cgn_param_magic == LPFC_CFG_PARAM_MAGIC_NUM) {
lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT | LOG_INIT, "4668 FW cgn parm buffer data: " "magic 0x%x version %d mode %d " "level0 %d level1 %d " "level2 %d byte13 %d " "byte14 %d byte15 %d " "byte11 %d byte12 %d activeMode %d\n",
p_cgn_param->cgn_param_magic,
p_cgn_param->cgn_param_version,
p_cgn_param->cgn_param_mode,
p_cgn_param->cgn_param_level0,
p_cgn_param->cgn_param_level1,
p_cgn_param->cgn_param_level2,
p_cgn_param->byte13,
p_cgn_param->byte14,
p_cgn_param->byte15,
p_cgn_param->byte11,
p_cgn_param->byte12,
phba->cmf_active_mode);
oldmode = phba->cmf_active_mode;
/* Any parameters out of range are corrected to defaults * by this routine. No need to fail.
*/
lpfc_cgn_params_val(phba, p_cgn_param);
/* Parameters are verified, move them into driver storage */
spin_lock_irq(&phba->hbalock);
memcpy(&phba->cgn_p, p_cgn_param, sizeof(struct lpfc_cgn_param));
/* Update parameters in congestion info buffer now */ if (phba->cgn_i) {
cp = (struct lpfc_cgn_info *)phba->cgn_i->virt;
cp->cgn_info_mode = phba->cgn_p.cgn_param_mode;
cp->cgn_info_level0 = phba->cgn_p.cgn_param_level0;
cp->cgn_info_level1 = phba->cgn_p.cgn_param_level1;
cp->cgn_info_level2 = phba->cgn_p.cgn_param_level2;
crc = lpfc_cgn_calc_crc32(cp, LPFC_CGN_INFO_SZ,
LPFC_CGN_CRC32_SEED);
cp->cgn_info_crc = cpu_to_le32(crc);
}
spin_unlock_irq(&phba->hbalock);
/** * lpfc_sli4_cgn_params_read - Read and Validate FW congestion parameters. * @phba: pointer to lpfc hba data structure. * * This routine issues a read_object mailbox command to * get the congestion management parameters from the FW * parses it and updates the driver maintained values. * * Returns * 0 if the object was empty * -Eval if an error was encountered * Count if bytes were read from object
**/ int
lpfc_sli4_cgn_params_read(struct lpfc_hba *phba)
{ int ret = 0; struct lpfc_cgn_param *p_cgn_param = NULL;
u32 *pdata = NULL;
u32 len = 0;
/* Find out if the FW has a new set of congestion parameters. */
len = sizeof(struct lpfc_cgn_param);
pdata = kzalloc(len, GFP_KERNEL); if (!pdata) return -ENOMEM;
ret = lpfc_read_object(phba, (char *)LPFC_PORT_CFG_NAME,
pdata, len);
/* 0 means no data. A negative means error. A positive means * bytes were copied.
*/ if (!ret) {
lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT | LOG_INIT, "4670 CGN RD OBJ returns no data\n"); goto rd_obj_err;
} elseif (ret < 0) { /* Some error. Just exit and return it to the caller.*/ goto rd_obj_err;
}
/* Parse data pointer over len and update the phba congestion * parameters with values passed back. The receive rate values * may have been altered in FW, but take no action here.
*/
p_cgn_param = (struct lpfc_cgn_param *)pdata;
lpfc_cgn_params_parse(phba, p_cgn_param, len);
rd_obj_err:
kfree(pdata); return ret;
}
/** * lpfc_sli4_cgn_parm_chg_evt - Process a FW congestion param change event * @phba: pointer to lpfc hba data structure. * * The FW generated Async ACQE SLI event calls this routine when * the event type is an SLI Internal Port Event and the Event Code * indicates a change to the FW maintained congestion parameters. * * This routine executes a Read_Object mailbox call to obtain the * current congestion parameters maintained in FW and corrects * the driver's active congestion parameters. * * The acqe event is not passed because there is no further data * required. * * Returns nonzero error if event processing encountered an error. * Zero otherwise for success.
**/ staticint
lpfc_sli4_cgn_parm_chg_evt(struct lpfc_hba *phba)
{ int ret = 0;
if (!phba->sli4_hba.pc_sli4_params.cmf) {
lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT | LOG_INIT, "4664 Cgn Evt when E2E off. Drop event\n"); return -EACCES;
}
/* If the event is claiming an empty object, it's ok. A write * could have cleared it. Only error is a negative return * status.
*/
ret = lpfc_sli4_cgn_params_read(phba); if (ret < 0) {
lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT | LOG_INIT, "4667 Error reading Cgn Params (%d)\n",
ret);
} elseif (!ret) {
lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT | LOG_INIT, "4673 CGN Event empty object.\n");
} return ret;
}
/** * 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; unsignedlong iflags;
/* First, declare the async event has been handled */
clear_bit(ASYNC_EVENT, &phba->hba_flag);
/* Now, handle all the async events */
spin_lock_irqsave(&phba->sli4_hba.asynce_list_lock, iflags); while (!list_empty(&phba->sli4_hba.sp_asynce_work_queue)) {
list_remove_head(&phba->sli4_hba.sp_asynce_work_queue,
cq_event, struct lpfc_cq_event, list);
spin_unlock_irqrestore(&phba->sli4_hba.asynce_list_lock,
iflags);
/* 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_TRACE_EVENT, "1804 Invalid asynchronous 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);
spin_lock_irqsave(&phba->sli4_hba.asynce_list_lock, iflags);
}
spin_unlock_irqrestore(&phba->sli4_hba.asynce_list_lock, iflags);
}
/** * 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_TRACE_EVENT, "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.
**/ staticvoid 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_TRACE_EVENT, "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
**/ staticint
lpfc_enable_pci_dev(struct lpfc_hba *phba)
{ struct pci_dev *pdev;
/* Obtain PCI device reference */ if (!phba->pcidev) goto out_error; else
pdev = phba->pcidev; /* Enable PCI device */ if (pci_enable_device_mem(pdev)) goto out_error; /* Request PCI resource for the device */ if (pci_request_mem_regions(pdev, 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_is_pcie(pdev))
pdev->needs_freset = 1;
/** * 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.
**/ staticvoid
lpfc_disable_pci_dev(struct lpfc_hba *phba)
{ struct pci_dev *pdev;
/** * 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)
{ int rc = 0;
/* If resets are disabled then set error state and return. */ if (!phba->cfg_enable_hba_reset) {
phba->link_state = LPFC_HBA_ERROR; return;
}
/* If not LPFC_SLI_ACTIVE, force all IO to be flushed */ if (phba->sli.sli_flag & LPFC_SLI_ACTIVE) {
lpfc_offline_prep(phba, LPFC_MBX_WAIT);
} else { if (test_bit(MBX_TMO_ERR, &phba->bit_flags)) { /* Perform a PCI function reset to start from clean */
rc = lpfc_pci_function_reset(phba);
lpfc_els_flush_all_cmd(phba);
}
lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);
lpfc_sli_flush_io_rings(phba);
}
lpfc_offline(phba);
clear_bit(MBX_TMO_ERR, &phba->bit_flags); if (unlikely(rc)) {
lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "8888 PCI function reset failed rc %x\n",
rc);
} else {
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;
/** * 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;
/** * 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
**/ staticint
lpfc_setup_driver_resource_phase1(struct lpfc_hba *phba)
{ struct lpfc_sli *psli = &phba->sli;
/* * Driver resources common to all SLI revisions
*/
atomic_set(&phba->fast_event_count, 0);
atomic_set(&phba->dbg_log_idx, 0);
atomic_set(&phba->dbg_log_cnt, 0);
atomic_set(&phba->dbg_log_dmping, 0);
spin_lock_init(&phba->hbalock);
/* ras_fwlog state */
spin_lock_init(&phba->ras_fwlog_lock);
/* Initialize the IO buffer list used by driver for SLI3 SCSI */
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);
/* Initialize OAS configuration list */
spin_lock_init(&phba->devicelock);
INIT_LIST_HEAD(&phba->luns);
/** * 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
**/ staticint
lpfc_sli_driver_resource_setup(struct lpfc_hba *phba)
{ int rc, entry_sz;
/* 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 * entry_sz);
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) * entry_sz);
/* Total BDEs in BPL for scsi_sg_list */
phba->cfg_total_seg_cnt = phba->cfg_sg_seg_cnt + 2;
}
if (!phba->lpfc_cmd_rsp_buf_pool) goto fail_free_dma_buf_pool;
/* * 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;
}
}
/** * 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.
**/ staticvoid
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
**/ staticint
lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba)
{
LPFC_MBOXQ_t *mboxq;
MAILBOX_t *mb; int rc, i, max_buf_size; int longs; int extra;
uint64_t wwn;
/* * 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);
phba->max_vpi = LPFC_MAX_VPI;
/* 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 EQ/CQ/WQ tuple. * The WQ create will allocate the ring.
*/
/* for VMID idle timeout if VMID is enabled */ if (lpfc_is_vmid_enabled(phba))
timer_setup(&phba->inactive_vmid_poll, lpfc_vmid_poll, 0);
/* * Initialize the SLI Layer to run with lpfc SLI4 HBAs.
*/ /* Initialize the Abort buffer list used by driver */
spin_lock_init(&phba->sli4_hba.abts_io_buf_list_lock);
INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_io_buf_list);
if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) { /* Initialize the Abort nvme buffer list used by driver */
spin_lock_init(&phba->sli4_hba.abts_nvmet_buf_list_lock);
INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_nvmet_ctx_list);
INIT_LIST_HEAD(&phba->sli4_hba.lpfc_nvmet_io_wait_list);
spin_lock_init(&phba->sli4_hba.t_active_list_lock);
INIT_LIST_HEAD(&phba->sli4_hba.t_active_ctx_list);
}
/* This abort list used by worker thread */
spin_lock_init(&phba->sli4_hba.sgl_list_lock);
spin_lock_init(&phba->sli4_hba.nvmet_io_wait_lock);
spin_lock_init(&phba->sli4_hba.asynce_list_lock);
spin_lock_init(&phba->sli4_hba.els_xri_abrt_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); /* 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 mboxq lists. If the early init routines fail * these lists need to be correctly initialized.
*/
INIT_LIST_HEAD(&phba->sli.mboxq);
INIT_LIST_HEAD(&phba->sli.mboxq_cmpl);
/* initialize optic_state to 0xFF */
phba->sli4_hba.lnk_info.optic_state = 0xff;
/* 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)) {
rc = -ENODEV; goto out_free_mem;
}
phba->temp_sensor_support = 1;
}
/* 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 (phba->sli4_hba.fawwpn_flag & LPFC_FAWWPN_CONFIG) { /* Right now the link is down, if FA-PWWN is configured the * firmware will try FLOGI before the driver gets a link up. * If it fails, the driver should get a MISCONFIGURED async * event which will clear this flag. The only notification * the driver gets is if it fails, if it succeeds there is no * notification given. Assume success.
*/
phba->sli4_hba.fawwpn_flag |= LPFC_FAWWPN_FABRIC;
}
rc = lpfc_mem_alloc_active_rrq_pool_s4(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;
}
/* Check to see if it matches any module parameter */ for (i = 0; i < lpfc_enable_nvmet_cnt; i++) { if (wwn == lpfc_enable_nvmet[i]) { #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) if (lpfc_nvmet_mem_alloc(phba)) break;
phba->nvmet_support = 1; /* a match */
lpfc_printf_log(phba, KERN_ERR,
LOG_TRACE_EVENT, "6017 NVME Target %016llx\n",
wwn); #else
lpfc_printf_log(phba, KERN_ERR,
LOG_TRACE_EVENT, "6021 Can't enable NVME Target." " NVME_TARGET_FC infrastructure" " is not in kernel\n"); #endif /* Not supported for NVMET */
phba->cfg_xri_rebalancing = 0; if (phba->irq_chann_mode == NHT_MODE) {
phba->cfg_irq_chann =
phba->sli4_hba.num_present_cpu;
phba->cfg_hdw_queue =
phba->sli4_hba.num_present_cpu;
phba->irq_chann_mode = NORMAL_MODE;
} break;
}
}
}
lpfc_nvme_mod_param_dep(phba);
/* * 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) {
lpfc_log_msg(phba, KERN_WARNING, LOG_INIT, "2999 Could not get SLI4 parameters\n");
rc = -EIO;
mempool_free(mboxq, phba->mbox_mem_pool); goto out_free_bsmbx;
}
/* * 1 for cmd, 1 for rsp, NVME adds an extra one * for boundary conditions in its max_sgl_segment template.
*/
extra = 2; if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
extra++;
/* * 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);
/* * Since lpfc_sg_seg_cnt is module param, the sg_dma_buf_size * used to create the sg_dma_buf_pool must be calculated.
*/ if (phba->sli3_options & LPFC_SLI3_BG_ENABLED) { /* Both cfg_enable_bg and cfg_external_dif code paths */
/* * The scsi_buf for a T10-DIF I/O holds the FCP cmnd, * the FCP rsp, and a SGE. Sice we have no control * over how many protection segments the SCSI Layer * will hand us (ie: there could be one for every block * in the IO), 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_cmnd32) + 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 supporting DIF, reduce the seg count for scsi to * allow room for the DIF sges.
*/ if (phba->cfg_enable_bg &&
phba->cfg_sg_seg_cnt > LPFC_MAX_BG_SLI4_SEG_CNT_DIF)
phba->cfg_scsi_seg_cnt = LPFC_MAX_BG_SLI4_SEG_CNT_DIF; else
phba->cfg_scsi_seg_cnt = phba->cfg_sg_seg_cnt;
} else { /* * The scsi_buf for a regular I/O holds 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_cmnd32) + sizeof(struct fcp_rsp) +
((phba->cfg_sg_seg_cnt + extra) * sizeof(struct sli4_sge));
/* Total SGEs for scsi_sg_list */
phba->cfg_total_seg_cnt = phba->cfg_sg_seg_cnt + extra;
phba->cfg_scsi_seg_cnt = phba->cfg_sg_seg_cnt;
/* * NOTE: if (phba->cfg_sg_seg_cnt + extra) <= 256 we only * need to post 1 page for the SGL.
*/
}
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
phba->sli4_hba.c_stat = alloc_percpu(struct lpfc_hdwq_stat); if (!phba->sli4_hba.c_stat) {
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "3332 Failed allocating per cpu hdwq stats\n");
rc = -ENOMEM; goto out_free_hba_idle_stat;
} #endif
phba->cmf_stat = alloc_percpu(struct lpfc_cgn_stat); if (!phba->cmf_stat) {
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "3331 Failed allocating per cpu cgn stats\n");
rc = -ENOMEM; goto out_free_hba_hdwq_info;
}
/* * 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;
}
}
/** * 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.
**/ staticvoid
lpfc_sli4_driver_resource_unset(struct lpfc_hba *phba)
{ struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
/* 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;
} 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
**/ staticint
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.
**/ staticvoid
lpfc_unset_driver_resource_phase2(struct lpfc_hba *phba)
{ if (phba->wq) {
destroy_workqueue(phba->wq);
phba->wq = NULL;
}
/* Stop kernel worker thread */ if (phba->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.
**/ void
lpfc_free_iocb_list(struct lpfc_hba *phba)
{ struct lpfc_iocbq *iocbq_entry = NULL, *iocbq_next = NULL;
/** * lpfc_init_iocb_list - Allocate and initialize iocb list. * @phba: pointer to lpfc hba data structure. * @iocb_count: number of requested iocbs * * 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
**/ 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, iocb_count); goto out_free_iocbq;
}
/** * 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;
/** * 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.
**/ staticvoid
lpfc_free_els_sgl_list(struct lpfc_hba *phba)
{
LIST_HEAD(sglq_list);
/* Retrieve all els sgls from driver list */
spin_lock_irq(&phba->sli4_hba.sgl_list_lock);
list_splice_init(&phba->sli4_hba.lpfc_els_sgl_list, &sglq_list);
spin_unlock_irq(&phba->sli4_hba.sgl_list_lock);
/* Now free the sgl list */
lpfc_free_sgl_list(phba, &sglq_list);
}
/** * lpfc_free_nvmet_sgl_list - Free nvmet sgl list. * @phba: pointer to lpfc hba data structure. * * This routine is invoked to free the driver's nvmet sgl list and memory.
**/ staticvoid
lpfc_free_nvmet_sgl_list(struct lpfc_hba *phba)
{ struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
LIST_HEAD(sglq_list);
/* Retrieve all nvmet sgls from driver list */
spin_lock_irq(&phba->hbalock);
spin_lock(&phba->sli4_hba.sgl_list_lock);
list_splice_init(&phba->sli4_hba.lpfc_nvmet_sgl_list, &sglq_list);
spin_unlock(&phba->sli4_hba.sgl_list_lock);
spin_unlock_irq(&phba->hbalock);
/* Now free the sgl list */
list_for_each_entry_safe(sglq_entry, sglq_next, &sglq_list, list) {
list_del(&sglq_entry->list);
lpfc_nvmet_buf_free(phba, sglq_entry->virt, sglq_entry->phys);
kfree(sglq_entry);
}
/* Update the nvmet_xri_cnt to reflect no current sgls. * The next initialization cycle sets the count and allocates * the sgls over again.
*/
phba->sli4_hba.nvmet_xri_cnt = 0;
}
/** * 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.
**/ staticint
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;
/** * 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.
**/ staticvoid
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. *
**/ staticvoid
lpfc_init_sgl_list(struct lpfc_hba *phba)
{ /* Initialize and populate the sglq list per host/VF. */
INIT_LIST_HEAD(&phba->sli4_hba.lpfc_els_sgl_list);
INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_els_sgl_list);
INIT_LIST_HEAD(&phba->sli4_hba.lpfc_nvmet_sgl_list);
INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_nvmet_ctx_list);
/* els xri-sgl book keeping */
phba->sli4_hba.els_xri_cnt = 0;
/* nvme xri-buffer book keeping */
phba->sli4_hba.io_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_TRACE_EVENT, "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;
/* * 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.max_rpi;
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);
/* Reached full RPI range */ if (curr_rpi_range == rpi_limit) 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;
/** * 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) gotoexit;
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
**/ staticstruct 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;
}
phba->eratt_poll_interval = LPFC_ERATT_POLL_INTERVAL;
/** * 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.
**/ staticvoid
lpfc_hba_free(struct lpfc_hba *phba)
{ if (phba->sli_rev == LPFC_SLI_REV4)
kfree(phba->sli4_hba.hdwq);
/* Release the driver assigned board number */
idr_remove(&lpfc_hba_index, phba->brd_no);
/** * lpfc_setup_fdmi_mask - Setup initial FDMI mask for HBA and Port attributes * @vport: pointer to lpfc vport data structure. * * This routine is will setup initial FDMI attribute masks for * FDMI2 or SmartSAN depending on module parameters. The driver will attempt * to get these attributes first before falling back, the attribute * fallback hierarchy is SmartSAN -> FDMI2 -> FMDI1
**/ void
lpfc_setup_fdmi_mask(struct lpfc_vport *vport)
{ struct lpfc_hba *phba = vport->phba;
/** * 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
**/ staticint
lpfc_create_shost(struct lpfc_hba *phba)
{ struct lpfc_vport *vport; struct Scsi_Host *shost;
if (phba->nvmet_support) { /* Only 1 vport (pport) will support NVME target */
phba->targetport = NULL;
phba->cfg_enable_fc4_type = LPFC_ENABLE_NVME;
lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_NVME_DISC, "6076 NVME Target Found\n");
}
lpfc_debugfs_initialize(vport); /* Put reference to SCSI host to driver's device private data */
pci_set_drvdata(phba->pcidev, shost);
lpfc_setup_fdmi_mask(vport);
/* * At this point we are fully registered with PSA. In addition, * any initial discovery should be completed.
*/ 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.
**/ staticvoid
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.
**/ staticvoid
lpfc_setup_bg(struct lpfc_hba *phba, struct Scsi_Host *shost)
{
uint32_t old_mask;
uint32_t old_guard;
if (phba->cfg_prot_mask && phba->cfg_prot_guard) {
lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "1478 Registering BlockGuard with the " "SCSI layer\n");
/* DIF Type 1 protection for profiles AST1/C1 is end to end */ if (phba->cfg_prot_mask == SHOST_DIX_TYPE1_PROTECTION)
phba->cfg_prot_mask |= SHOST_DIF_TYPE1_PROTECTION;
if (phba->cfg_prot_mask && phba->cfg_prot_guard) { if ((old_mask != phba->cfg_prot_mask) ||
(old_guard != phba->cfg_prot_guard))
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "1475 Registering BlockGuard with the " "SCSI layer: mask %d guard %d\n",
phba->cfg_prot_mask,
phba->cfg_prot_guard);
scsi_host_set_prot(shost, phba->cfg_prot_mask);
scsi_host_set_guard(shost, phba->cfg_prot_guard);
} else
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "1479 Not Registering BlockGuard with the SCSI " "layer, Bad protection parameters: %d %d\n",
old_mask, old_guard);
}
}
/** * 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.
**/ staticvoid
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;
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_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
**/ staticint
lpfc_sli_pci_mem_setup(struct lpfc_hba *phba)
{ struct pci_dev *pdev = phba->pcidev; unsignedlong bar0map_len, bar2map_len; int i, hbq_count; void *ptr; int error;
if (!pdev) return -ENODEV;
/* Set the device DMA mask size */
error = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); if (error)
error = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); if (error) return error;
error = -ENODEV;
/* 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);
/* 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;
/** * 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_TRACE_EVENT, "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_TRACE_EVENT, "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: case LPFC_SLI_INTF_IF_TYPE_6: /* Final checks. The port status should be clean. */ if (lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr,
®_data.word0) ||
lpfc_sli4_unrecoverable_port(®_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_TRACE_EVENT, "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;
}
if (lpfc_pldv_detect &&
bf_get(lpfc_sli_intf_sli_family,
&phba->sli4_hba.sli_intf) ==
LPFC_SLI_INTF_FAMILY_G6)
pci_write_config_byte(phba->pcidev,
LPFC_SLI_INTF, CFG_PLD); break; case LPFC_SLI_INTF_IF_TYPE_1: default: break;
}
} return port_error;
}
/** * lpfc_sli4_bar1_register_memmap - Set up SLI4 BAR1 register memory map. * @phba: pointer to lpfc hba data structure. * @if_type: sli if type to operate on. * * This routine is invoked to set up SLI4 BAR1 register memory map.
**/ staticvoid
lpfc_sli4_bar1_register_memmap(struct lpfc_hba *phba, uint32_t if_type)
{ switch (if_type) { case LPFC_SLI_INTF_IF_TYPE_0:
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; break; case LPFC_SLI_INTF_IF_TYPE_6:
phba->sli4_hba.RQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
LPFC_IF6_RQ_DOORBELL;
phba->sli4_hba.WQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
LPFC_IF6_WQ_DOORBELL;
phba->sli4_hba.CQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
LPFC_IF6_CQ_DOORBELL;
phba->sli4_hba.EQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
LPFC_IF6_EQ_DOORBELL;
phba->sli4_hba.MQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
LPFC_IF6_MQ_DOORBELL; break; case LPFC_SLI_INTF_IF_TYPE_2: case LPFC_SLI_INTF_IF_TYPE_1: default:
dev_err(&phba->pcidev->dev, "FATAL - unsupported SLI4 interface type - %d\n",
if_type); break;
}
}
/** * 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.
**/ staticint
lpfc_sli4_bar2_register_memmap(struct lpfc_hba *phba, uint32_t vf)
{ if (vf > LPFC_VIR_FUNC_MAX) return -ENODEV;
/** * 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.
**/ staticint
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;
}
/* * 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;
/* * 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);
/** * 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. *
**/ staticvoid
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);
staticconstchar * const lpfc_topo_to_str[] = { "Loop then P2P", "Loopback", "P2P Only", "Unsupported", "Loop Only", "Unsupported", "P2P then Loop",
};
#define LINK_FLAGS_DEF 0x0 #define LINK_FLAGS_P2P 0x1 #define LINK_FLAGS_LOOP 0x2 /** * lpfc_map_topology - Map the topology read from READ_CONFIG * @phba: pointer to lpfc hba data structure. * @rd_config: pointer to read config data * * This routine is invoked to map the topology values as read * from the read config mailbox command. If the persistent * topology feature is supported, the firmware will provide the * saved topology information to be used in INIT_LINK
**/ staticvoid
lpfc_map_topology(struct lpfc_hba *phba, struct lpfc_mbx_read_config *rd_config)
{
u8 ptv, tf, pt;
lpfc_printf_log(phba, KERN_INFO, LOG_SLI, "2027 Read Config Data : ptv:0x%x, tf:0x%x pt:0x%x",
ptv, tf, pt); if (!ptv) {
lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, "2019 FW does not support persistent topology " "Using driver parameter defined value [%s]",
lpfc_topo_to_str[phba->cfg_topology]); return;
} /* FW supports persistent topology - override module parameter value */
set_bit(HBA_PERSISTENT_TOPO, &phba->hba_flag);
/* if ASIC_GEN_NUM >= 0xC) */ if ((bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
LPFC_SLI_INTF_IF_TYPE_6) ||
(bf_get(lpfc_sli_intf_sli_family, &phba->sli4_hba.sli_intf) ==
LPFC_SLI_INTF_FAMILY_G6)) { if (!tf)
phba->cfg_topology = ((pt == LINK_FLAGS_LOOP)
? FLAGS_TOPOLOGY_MODE_LOOP
: FLAGS_TOPOLOGY_MODE_PT_PT); else
clear_bit(HBA_PERSISTENT_TOPO, &phba->hba_flag);
} else { /* G5 */ if (tf) /* If topology failover set - pt is '0' or '1' */
phba->cfg_topology = (pt ? FLAGS_TOPOLOGY_MODE_PT_LOOP :
FLAGS_TOPOLOGY_MODE_LOOP_PT); else
phba->cfg_topology = ((pt == LINK_FLAGS_P2P)
? FLAGS_TOPOLOGY_MODE_PT_PT
: FLAGS_TOPOLOGY_MODE_LOOP);
} if (test_bit(HBA_PERSISTENT_TOPO, &phba->hba_flag))
lpfc_printf_log(phba, KERN_INFO, LOG_SLI, "2020 Using persistent topology value [%s]",
lpfc_topo_to_str[phba->cfg_topology]); else
lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, "2021 Invalid topology values from FW " "Using driver parameter defined value [%s]",
lpfc_topo_to_str[phba->cfg_topology]);
}
/** * 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;
uint16_t forced_link_speed;
uint32_t if_type, qmin, fawwpn; 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_TRACE_EVENT, "2011 Unable to allocate memory for issuing " "SLI_CONFIG_SPECIAL mailbox command\n"); return -ENOMEM;
}
/* Next decide on FPIN or Signal E2E CGN support * For congestion alarms and warnings valid combination are: * 1. FPIN alarms / FPIN warnings * 2. Signal alarms / Signal warnings * 3. FPIN alarms / Signal warnings * 4. Signal alarms / FPIN warnings * * Initialize the adapter frequency to 100 mSecs
*/
phba->cgn_reg_fpin = LPFC_CGN_FPIN_BOTH;
phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;
phba->cgn_sig_freq = lpfc_fabric_cgn_frequency;
if (lpfc_use_cgn_signal) { if (bf_get(lpfc_mbx_rd_conf_wcs, rd_config)) {
phba->cgn_reg_signal = EDC_CG_SIG_WARN_ONLY;
phba->cgn_reg_fpin &= ~LPFC_CGN_FPIN_WARN;
} if (bf_get(lpfc_mbx_rd_conf_acs, rd_config)) { /* MUST support both alarm and warning * because EDC does not support alarm alone.
*/ if (phba->cgn_reg_signal !=
EDC_CG_SIG_WARN_ONLY) { /* Must support both or none */
phba->cgn_reg_fpin = LPFC_CGN_FPIN_BOTH;
phba->cgn_reg_signal =
EDC_CG_SIG_NOTSUPPORTED;
} else {
phba->cgn_reg_signal =
EDC_CG_SIG_WARN_ALARM;
phba->cgn_reg_fpin =
LPFC_CGN_FPIN_NONE;
}
}
}
/* Set the congestion initial signal and fpin values. */
phba->cgn_init_reg_fpin = phba->cgn_reg_fpin;
phba->cgn_init_reg_signal = phba->cgn_reg_signal;
/* * Calculate queue resources based on how * many WQ/CQ/EQs are available.
*/
qmin = phba->sli4_hba.max_cfg_param.max_wq; if (phba->sli4_hba.max_cfg_param.max_cq < qmin)
qmin = phba->sli4_hba.max_cfg_param.max_cq; /* * Reserve 4 (ELS, NVME LS, MBOX, plus one extra) and * the remainder can be used for NVME / FCP.
*/
qmin -= 4; if (phba->sli4_hba.max_cfg_param.max_eq < qmin)
qmin = phba->sli4_hba.max_cfg_param.max_eq;
/* Check to see if there is enough for default cfg */ if ((phba->cfg_irq_chann > qmin) ||
(phba->cfg_hdw_queue > qmin)) {
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "2005 Reducing Queues - " "FW resource limitation: " "WQ %d CQ %d EQ %d: min %d: " "IRQ %d HDWQ %d\n",
phba->sli4_hba.max_cfg_param.max_wq,
phba->sli4_hba.max_cfg_param.max_cq,
phba->sli4_hba.max_cfg_param.max_eq,
qmin, phba->cfg_irq_chann,
phba->cfg_hdw_queue);
if (phba->cfg_irq_chann > qmin)
phba->cfg_irq_chann = qmin; if (phba->cfg_hdw_queue > qmin)
phba->cfg_hdw_queue = qmin;
}
}
if (rc) goto read_cfg_out;
/* Update link speed if forced link speed is supported */
if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf); if (if_type >= LPFC_SLI_INTF_IF_TYPE_2) {
forced_link_speed =
bf_get(lpfc_mbx_rd_conf_link_speed, rd_config); if (forced_link_speed) {
set_bit(HBA_FORCED_LINK_SPEED, &phba->hba_flag);
switch (forced_link_speed) { case LINK_SPEED_1G:
phba->cfg_link_speed =
LPFC_USER_LINK_SPEED_1G; break; case LINK_SPEED_2G:
phba->cfg_link_speed =
LPFC_USER_LINK_SPEED_2G; break; case LINK_SPEED_4G:
phba->cfg_link_speed =
LPFC_USER_LINK_SPEED_4G; break; case LINK_SPEED_8G:
phba->cfg_link_speed =
LPFC_USER_LINK_SPEED_8G; break; case LINK_SPEED_10G:
phba->cfg_link_speed =
LPFC_USER_LINK_SPEED_10G; break; case LINK_SPEED_16G:
phba->cfg_link_speed =
LPFC_USER_LINK_SPEED_16G; break; case LINK_SPEED_32G:
phba->cfg_link_speed =
LPFC_USER_LINK_SPEED_32G; break; case LINK_SPEED_64G:
phba->cfg_link_speed =
LPFC_USER_LINK_SPEED_64G; break; case 0xffff:
phba->cfg_link_speed =
LPFC_USER_LINK_SPEED_AUTO; break; default:
lpfc_printf_log(phba, KERN_ERR,
LOG_TRACE_EVENT, "0047 Unrecognized link " "speed : %d\n",
forced_link_speed);
phba->cfg_link_speed =
LPFC_USER_LINK_SPEED_AUTO;
}
}
}
/* Reset the DFT_HBA_Q_DEPTH to the max xri */
length = phba->sli4_hba.max_cfg_param.max_xri -
lpfc_sli4_get_els_iocb_cnt(phba); if (phba->cfg_hba_queue_depth > length) {
lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, "3361 HBA queue depth changed from %d to %d\n",
phba->cfg_hba_queue_depth, length);
phba->cfg_hba_queue_depth = length;
}
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);
/** * 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.
**/ staticint
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_TRACE_EVENT, "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_TRACE_EVENT, "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_6: 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 counts * @phba: pointer to lpfc hba data structure. * * This routine is invoked to check the user settable queue counts for EQs. * 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
**/ staticint
lpfc_sli4_queue_verify(struct lpfc_hba *phba)
{ /* * Sanity check for configured queue parameters against the run-time * device parameters
*/
if (phba->nvmet_support) { if (phba->cfg_hdw_queue < phba->cfg_nvmet_mrq)
phba->cfg_nvmet_mrq = phba->cfg_hdw_queue; if (phba->cfg_nvmet_mrq > LPFC_NVMET_MRQ_MAX)
phba->cfg_nvmet_mrq = LPFC_NVMET_MRQ_MAX;
}
/* 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;
}
staticint
lpfc_alloc_io_wq_cq(struct lpfc_hba *phba, int idx)
{ struct lpfc_queue *qdesc;
u32 wqesize; int cpu;
cpu = lpfc_find_cpu_handle(phba, idx, LPFC_FIND_BY_HDWQ); /* Create Fast Path IO CQs */ if (phba->enab_exp_wqcq_pages) /* Increase the CQ size when WQEs contain an embedded cdb */
qdesc = lpfc_sli4_queue_alloc(phba, LPFC_EXPANDED_PAGE_SIZE,
phba->sli4_hba.cq_esize,
LPFC_CQE_EXP_COUNT, cpu);
/** * 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, cpu, eqcpu; struct lpfc_sli4_hdw_queue *qp; struct lpfc_vector_map_info *cpup; struct lpfc_vector_map_info *eqcpup; struct lpfc_eq_intr_info *eqi;
u32 wqesize;
/* * Create HBA Record arrays. * Both NVME and FCP will share that same vectors / EQs
*/
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.eq_esize = LPFC_EQE_SIZE_4B;
phba->sli4_hba.eq_ecount = LPFC_EQE_DEF_COUNT;
phba->sli4_hba.cq_esize = LPFC_CQE_SIZE;
phba->sli4_hba.cq_ecount = LPFC_CQE_DEF_COUNT;
if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) { if (phba->nvmet_support) {
phba->sli4_hba.nvmet_cqset = kcalloc(
phba->cfg_nvmet_mrq, sizeof(struct lpfc_queue *),
GFP_KERNEL); if (!phba->sli4_hba.nvmet_cqset) {
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "3121 Fail allocate memory for " "fast-path CQ set array\n"); goto out_error;
}
phba->sli4_hba.nvmet_mrq_hdr = kcalloc(
phba->cfg_nvmet_mrq, sizeof(struct lpfc_queue *),
GFP_KERNEL); if (!phba->sli4_hba.nvmet_mrq_hdr) {
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "3122 Fail allocate memory for " "fast-path RQ set hdr array\n"); goto out_error;
}
phba->sli4_hba.nvmet_mrq_data = kcalloc(
phba->cfg_nvmet_mrq, sizeof(struct lpfc_queue *),
GFP_KERNEL); if (!phba->sli4_hba.nvmet_mrq_data) {
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "3124 Fail allocate memory for " "fast-path RQ set data array\n"); goto out_error;
}
}
}
INIT_LIST_HEAD(&phba->sli4_hba.lpfc_wq_list);
/* Create HBA Event Queues (EQs) */
for_each_present_cpu(cpu) { /* We only want to create 1 EQ per vector, even though * multiple CPUs might be using that vector. so only * selects the CPUs that are LPFC_CPU_FIRST_IRQ.
*/
cpup = &phba->sli4_hba.cpu_map[cpu]; if (!(cpup->flag & LPFC_CPU_FIRST_IRQ)) continue;
/* Get a ptr to the Hardware Queue associated with this CPU */
qp = &phba->sli4_hba.hdwq[cpup->hdwq];
/* Allocate an EQ */
qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
phba->sli4_hba.eq_esize,
phba->sli4_hba.eq_ecount, cpu); if (!qdesc) {
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "0497 Failed allocate EQ (%d)\n",
cpup->hdwq); goto out_error;
}
qdesc->qe_valid = 1;
qdesc->hdwq = cpup->hdwq;
qdesc->chann = cpu; /* First CPU this EQ is affinitized to */
qdesc->last_cpu = qdesc->chann;
/* Save the allocated EQ in the Hardware Queue */
qp->hba_eq = qdesc;
/* Now we need to populate the other Hardware Queues, that share * an IRQ vector, with the associated EQ ptr.
*/
for_each_present_cpu(cpu) {
cpup = &phba->sli4_hba.cpu_map[cpu];
/* Check for EQ already allocated in previous loop */ if (cpup->flag & LPFC_CPU_FIRST_IRQ) continue;
/* Check for multiple CPUs per hdwq */
qp = &phba->sli4_hba.hdwq[cpup->hdwq]; if (qp->hba_eq) continue;
/* We need to share an EQ for this hdwq */
eqcpu = lpfc_find_cpu_handle(phba, cpup->eq, LPFC_FIND_BY_EQ);
eqcpup = &phba->sli4_hba.cpu_map[eqcpu];
qp->hba_eq = phba->sli4_hba.hdwq[eqcpup->hdwq].hba_eq;
}
/* * Create slow-path ELS Work Queue. * Increase the ELS WQ size when WQEs contain an embedded cdb
*/
wqesize = (phba->fcp_embed_io) ?
LPFC_WQE128_SIZE : phba->sli4_hba.wq_esize;
/* Loop thru all Hardware Queues */ for (idx = 0; idx < phba->cfg_hdw_queue; idx++) { /* Free the CQ/WQ corresponding to the Hardware Queue */
lpfc_sli4_queue_free(hdwq[idx].io_cq);
lpfc_sli4_queue_free(hdwq[idx].io_wq);
hdwq[idx].hba_eq = NULL;
hdwq[idx].io_cq = NULL;
hdwq[idx].io_wq = NULL; if (phba->cfg_xpsgl && !phba->nvmet_support)
lpfc_free_sgl_per_hdwq(phba, &hdwq[idx]);
lpfc_free_cmd_rsp_buf_per_hdwq(phba, &hdwq[idx]);
} /* Loop thru all IRQ vectors */ for (idx = 0; idx < phba->cfg_irq_chann; idx++) { /* Free the EQ corresponding to the IRQ vector */
eq = phba->sli4_hba.hba_eq_hdl[idx].eq;
lpfc_sli4_queue_free(eq);
phba->sli4_hba.hba_eq_hdl[idx].eq = NULL;
}
}
/** * 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)
{ /* * Set FREE_INIT before beginning to free the queues. * Wait until the users of queues to acknowledge to * release queues by clearing FREE_WAIT.
*/
spin_lock_irq(&phba->hbalock);
phba->sli.sli_flag |= LPFC_QUEUE_FREE_INIT; while (phba->sli.sli_flag & LPFC_QUEUE_FREE_WAIT) {
spin_unlock_irq(&phba->hbalock);
msleep(20);
spin_lock_irq(&phba->hbalock);
}
spin_unlock_irq(&phba->hbalock);
lpfc_sli4_cleanup_poll_list(phba);
/* Release HBA eqs */ if (phba->sli4_hba.hdwq)
lpfc_sli4_release_hdwq(phba);
if (phba->nvmet_support) {
lpfc_sli4_release_queues(&phba->sli4_hba.nvmet_cqset,
phba->cfg_nvmet_mrq);
/* create the wq */
rc = lpfc_wq_create(phba, wq, cq, qtype); if (rc) {
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "4618 Fail setup fastpath WQ (%d), rc = 0x%x\n",
qidx, (uint32_t)rc); /* no need to tear down cq - caller will do so */ return rc;
}
/* Bind this CQ/WQ to the NVME ring */
pring = wq->pring;
pring->sli.sli4.wqp = (void *)wq;
cq->pring = pring;
lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "2593 WQ setup: wq[%d]-id=%d assoc=%d, cq[%d]-id=%d\n",
qidx, wq->queue_id, wq->assoc_qid, qidx, cq->queue_id);
} else {
rc = lpfc_mq_create(phba, wq, cq, LPFC_MBOX); if (rc) {
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "0539 Failed setup of slow-path MQ: " "rc = 0x%x\n", rc); /* no need to tear down cq - caller will do so */ return rc;
}
/** * lpfc_setup_cq_lookup - Setup the CQ lookup table * @phba: pointer to lpfc hba data structure. * * This routine will populate the cq_lookup table by all * available CQ queue_id's.
**/ staticvoid
lpfc_setup_cq_lookup(struct lpfc_hba *phba)
{ struct lpfc_queue *eq, *childq; int qidx;
memset(phba->sli4_hba.cq_lookup, 0,
(sizeof(struct lpfc_queue *) * (phba->sli4_hba.cq_max + 1))); /* Loop thru all IRQ vectors */ for (qidx = 0; qidx < phba->cfg_irq_chann; qidx++) { /* Get the EQ corresponding to the IRQ vector */
eq = phba->sli4_hba.hba_eq_hdl[qidx].eq; if (!eq) continue; /* Loop through all CQs associated with that EQ */
list_for_each_entry(childq, &eq->child_list, list) { if (childq->queue_id > phba->sli4_hba.cq_max) continue; if (childq->subtype == LPFC_IO)
phba->sli4_hba.cq_lookup[childq->queue_id] =
childq;
}
}
}
/** * 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)
{
uint32_t shdr_status, shdr_add_status; union lpfc_sli4_cfg_shdr *shdr; struct lpfc_vector_map_info *cpup; struct lpfc_sli4_hdw_queue *qp;
LPFC_MBOXQ_t *mboxq; int qidx, cpu;
uint32_t length, usdelay; int rc = -ENOMEM;
/* 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_TRACE_EVENT, "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);
/* * Set up HBA Event Queues (EQs)
*/
qp = phba->sli4_hba.hdwq;
/* Set up HBA event queue */ if (!qp) {
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "3147 Fast-path EQs not allocated\n");
rc = -ENOMEM; goto out_error;
}
/* Loop thru all IRQ vectors */ for (qidx = 0; qidx < phba->cfg_irq_chann; qidx++) { /* Create HBA Event Queues (EQs) in order */
for_each_present_cpu(cpu) {
cpup = &phba->sli4_hba.cpu_map[cpu];
/* Look for the CPU thats using that vector with * LPFC_CPU_FIRST_IRQ set.
*/ if (!(cpup->flag & LPFC_CPU_FIRST_IRQ)) continue; if (qidx != cpup->eq) continue;
/* Create an EQ for that vector */
rc = lpfc_eq_create(phba, qp[cpup->hdwq].hba_eq,
phba->cfg_fcp_imax); if (rc) {
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "0523 Failed setup of fast-path" " EQ (%d), rc = 0x%x\n",
cpup->eq, (uint32_t)rc); goto out_destroy;
}
/* Save the EQ for that vector in the hba_eq_hdl */
phba->sli4_hba.hba_eq_hdl[cpup->eq].eq =
qp[cpup->hdwq].hba_eq;
/** * 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)
{ struct lpfc_sli4_hdw_queue *qp; struct lpfc_queue *eq; int qidx;
/* Unset mailbox command work queue */ if (phba->sli4_hba.mbx_wq)
lpfc_mq_destroy(phba, phba->sli4_hba.mbx_wq);
/* Unset NVME LS work queue */ if (phba->sli4_hba.nvmels_wq)
lpfc_wq_destroy(phba, phba->sli4_hba.nvmels_wq);
/* Unset ELS work queue */ if (phba->sli4_hba.els_wq)
lpfc_wq_destroy(phba, phba->sli4_hba.els_wq);
/** * 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
**/ staticint
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;
/** * 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.
**/ staticvoid
lpfc_sli4_cq_event_pool_destroy(struct lpfc_hba *phba)
{ struct lpfc_cq_event *cq_event, *next_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;
/** * 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; unsignedlong iflags;
/** * __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)
{ unsignedlong 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.
**/ staticvoid
lpfc_sli4_cq_event_release_all(struct lpfc_hba *phba)
{
LIST_HEAD(cq_event_list); struct lpfc_cq_event *cq_event; unsignedlong iflags;
/* Retrieve all the pending WCQEs from pending WCQE lists */
/** * 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;
uint32_t port_reset = 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_TRACE_EVENT, "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);
mempool_free(mboxq, phba->mbox_mem_pool); if (shdr_status || shdr_add_status || rc) {
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "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: case LPFC_SLI_INTF_IF_TYPE_6:
wait: /* * Poll the Port Status Register and wait for RDY for * up to 30 seconds. If the port doesn't respond, treat * it as an error.
*/ for (rdy_chk = 0; rdy_chk < 1500; rdy_chk++) { if (lpfc_readl(phba->sli4_hba.u.if_type2.
STATUSregaddr, ®_data.word0)) {
rc = -ENODEV; goto out;
} if (bf_get(lpfc_sliport_status_rdy, ®_data)) break;
msleep(20);
}
if (!bf_get(lpfc_sliport_status_rdy, ®_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_TRACE_EVENT, "2890 Port not ready, port status reg " "0x%x error 1=0x%x, error 2=0x%x\n",
reg_data.word0,
phba->work_status[0],
phba->work_status[1]);
rc = -ENODEV; goto out;
}
if (bf_get(lpfc_sliport_status_pldv, ®_data))
lpfc_pldv_detect = true;
if (!port_reset) { /* * Reset the port now
*/
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);
out: /* Catch the not-ready port failure after a port reset. */ if (rc) {
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "3317 HBA not functional: IP Reset Failed " "try: echo fw_reset > board_mode\n");
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
**/ staticint
lpfc_sli4_pci_mem_setup(struct lpfc_hba *phba)
{ struct pci_dev *pdev = phba->pcidev; unsignedlong bar0map_len, bar1map_len, bar2map_len; int error;
uint32_t if_type;
if (!pdev) return -ENODEV;
/* Set the device DMA mask size */
error = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); if (error)
error = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); if (error) 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 -ENODEV;
}
/* 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 -ENODEV;
}
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, PCI_64BIT_BAR0)) {
phba->pci_bar0_map = pci_resource_start(pdev, PCI_64BIT_BAR0);
bar0map_len = pci_resource_len(pdev, PCI_64BIT_BAR0);
/* * 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"); return -ENODEV;
}
phba->pci_bar0_memmap_p = phba->sli4_hba.conf_regs_memmap_p; /* 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"); return -ENODEV;
}
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"); return -ENODEV;
}
lpfc_sli4_bar0_register_memmap(phba, if_type);
}
if (if_type == LPFC_SLI_INTF_IF_TYPE_0) { if (pci_resource_start(pdev, PCI_64BIT_BAR2)) { /* * 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,
PCI_64BIT_BAR2);
bar1map_len = pci_resource_len(pdev, PCI_64BIT_BAR2);
phba->sli4_hba.ctrl_regs_memmap_p =
ioremap(phba->pci_bar1_map,
bar1map_len); if (!phba->sli4_hba.ctrl_regs_memmap_p) {
dev_err(&pdev->dev, "ioremap failed for SLI4 HBA " "control registers.\n");
error = -ENOMEM; goto out_iounmap_conf;
}
phba->pci_bar2_memmap_p =
phba->sli4_hba.ctrl_regs_memmap_p;
lpfc_sli4_bar1_register_memmap(phba, if_type);
} else {
error = -ENOMEM; goto out_iounmap_conf;
}
}
if ((if_type == LPFC_SLI_INTF_IF_TYPE_6) &&
(pci_resource_start(pdev, PCI_64BIT_BAR2))) { /* * Map SLI4 if type 6 HBA Doorbell Register base to a kernel * virtual address and setup the registers.
*/
phba->pci_bar1_map = pci_resource_start(pdev, PCI_64BIT_BAR2);
bar1map_len = pci_resource_len(pdev, PCI_64BIT_BAR2);
phba->sli4_hba.drbl_regs_memmap_p =
ioremap(phba->pci_bar1_map, bar1map_len); if (!phba->sli4_hba.drbl_regs_memmap_p) {
dev_err(&pdev->dev, "ioremap failed for SLI4 HBA doorbell registers.\n");
error = -ENOMEM; goto out_iounmap_conf;
}
phba->pci_bar2_memmap_p = phba->sli4_hba.drbl_regs_memmap_p;
lpfc_sli4_bar1_register_memmap(phba, if_type);
}
if (if_type == LPFC_SLI_INTF_IF_TYPE_0) { if (pci_resource_start(pdev, PCI_64BIT_BAR4)) { /* * 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,
PCI_64BIT_BAR4);
bar2map_len = pci_resource_len(pdev, PCI_64BIT_BAR4);
phba->sli4_hba.drbl_regs_memmap_p =
ioremap(phba->pci_bar2_map,
bar2map_len); if (!phba->sli4_hba.drbl_regs_memmap_p) {
dev_err(&pdev->dev, "ioremap failed for SLI4 HBA" " doorbell registers.\n");
error = -ENOMEM; goto out_iounmap_ctrl;
}
phba->pci_bar4_memmap_p =
phba->sli4_hba.drbl_regs_memmap_p;
error = lpfc_sli4_bar2_register_memmap(phba, LPFC_VF0); if (error) goto out_iounmap_all;
} else {
error = -ENOMEM; goto out_iounmap_ctrl;
}
}
if (if_type == LPFC_SLI_INTF_IF_TYPE_6 &&
pci_resource_start(pdev, PCI_64BIT_BAR4)) { /* * Map SLI4 if type 6 HBA DPP Register base to a kernel * virtual address and setup the registers.
*/
phba->pci_bar2_map = pci_resource_start(pdev, PCI_64BIT_BAR4);
bar2map_len = pci_resource_len(pdev, PCI_64BIT_BAR4);
phba->sli4_hba.dpp_regs_memmap_p =
ioremap(phba->pci_bar2_map, bar2map_len); if (!phba->sli4_hba.dpp_regs_memmap_p) {
dev_err(&pdev->dev, "ioremap failed for SLI4 HBA dpp registers.\n");
error = -ENOMEM; goto out_iounmap_all;
}
phba->pci_bar4_memmap_p = phba->sli4_hba.dpp_regs_memmap_p;
}
/* Set up the EQ/CQ register handeling functions now */ switch (if_type) { case LPFC_SLI_INTF_IF_TYPE_0: case LPFC_SLI_INTF_IF_TYPE_2:
phba->sli4_hba.sli4_eq_clr_intr = lpfc_sli4_eq_clr_intr;
phba->sli4_hba.sli4_write_eq_db = lpfc_sli4_write_eq_db;
phba->sli4_hba.sli4_write_cq_db = lpfc_sli4_write_cq_db; break; case LPFC_SLI_INTF_IF_TYPE_6:
phba->sli4_hba.sli4_eq_clr_intr = lpfc_sli4_if6_eq_clr_intr;
phba->sli4_hba.sli4_write_eq_db = lpfc_sli4_if6_write_eq_db;
phba->sli4_hba.sli4_write_cq_db = lpfc_sli4_if6_write_cq_db; break; default: break;
}
return 0;
out_iounmap_all: if (phba->sli4_hba.drbl_regs_memmap_p)
iounmap(phba->sli4_hba.drbl_regs_memmap_p);
out_iounmap_ctrl: if (phba->sli4_hba.ctrl_regs_memmap_p)
iounmap(phba->sli4_hba.ctrl_regs_memmap_p);
out_iounmap_conf:
iounmap(phba->sli4_hba.conf_regs_memmap_p);
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.
**/ staticvoid
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_6:
iounmap(phba->sli4_hba.drbl_regs_memmap_p);
iounmap(phba->sli4_hba.conf_regs_memmap_p); if (phba->sli4_hba.dpp_regs_memmap_p)
iounmap(phba->sli4_hba.dpp_regs_memmap_p); break; case LPFC_SLI_INTF_IF_TYPE_1: break; 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. * * Return codes * 0 - successful * other values - error
**/ staticint
lpfc_sli_enable_msix(struct lpfc_hba *phba)
{ int rc;
LPFC_MBOXQ_t *pmb;
/** * 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
*/ staticint
lpfc_sli_enable_msi(struct lpfc_hba *phba)
{ int rc;
/** * lpfc_sli_enable_intr - Enable device interrupt to SLI-3 device. * @phba: pointer to lpfc hba data structure. * @cfg_mode: Interrupt configuration mode (INTx, MSI or MSI-X). * * 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;
/* Need to issue conf_port mbox cmd before conf_msi mbox cmd */
retval = lpfc_sli_config_port(phba, LPFC_SLI_REV3); if (retval) return intr_mode;
clear_bit(HBA_NEEDS_CFG_PORT, &phba->hba_flag);
if (cfg_mode == 2) { /* 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.
**/ staticvoid
lpfc_sli_disable_intr(struct lpfc_hba *phba)
{ int nr_irqs, i;
/** * lpfc_find_cpu_handle - Find the CPU that corresponds to the specified Queue * @phba: pointer to lpfc hba data structure. * @id: EQ vector index or Hardware Queue index * @match: LPFC_FIND_BY_EQ = match by EQ * LPFC_FIND_BY_HDWQ = match by Hardware Queue * Return the CPU that matches the selection criteria
*/ static uint16_t
lpfc_find_cpu_handle(struct lpfc_hba *phba, uint16_t id, int match)
{ struct lpfc_vector_map_info *cpup; int cpu;
/* Loop through all CPUs */
for_each_present_cpu(cpu) {
cpup = &phba->sli4_hba.cpu_map[cpu];
/* If we are matching by EQ, there may be multiple CPUs using * using the same vector, so select the one with * LPFC_CPU_FIRST_IRQ set.
*/ if ((match == LPFC_FIND_BY_EQ) &&
(cpup->flag & LPFC_CPU_FIRST_IRQ) &&
(cpup->eq == id)) return cpu;
/* If matching by HDWQ, select the first CPU that matches */ if ((match == LPFC_FIND_BY_HDWQ) && (cpup->hdwq == id)) return cpu;
} return 0;
}
#ifdef CONFIG_X86 /** * lpfc_find_hyper - Determine if the CPU map entry is hyper-threaded * @phba: pointer to lpfc hba data structure. * @cpu: CPU map index * @phys_id: CPU package physical id * @core_id: CPU core id
*/ staticint
lpfc_find_hyper(struct lpfc_hba *phba, int cpu,
uint16_t phys_id, uint16_t core_id)
{ struct lpfc_vector_map_info *cpup; int idx;
for_each_present_cpu(idx) {
cpup = &phba->sli4_hba.cpu_map[idx]; /* Does the cpup match the one we are looking for */ if ((cpup->phys_id == phys_id) &&
(cpup->core_id == core_id) &&
(cpu != idx)) return 1;
} return 0;
} #endif
/* * lpfc_assign_eq_map_info - Assigns eq for vector_map structure * @phba: pointer to lpfc hba data structure. * @eqidx: index for eq and irq vector * @flag: flags to set for vector_map structure * @cpu: cpu used to index vector_map structure * * The routine assigns eq info into vector_map structure
*/ staticinlinevoid
lpfc_assign_eq_map_info(struct lpfc_hba *phba, uint16_t eqidx, uint16_t flag, unsignedint cpu)
{ struct lpfc_vector_map_info *cpup = &phba->sli4_hba.cpu_map[cpu]; struct lpfc_hba_eq_hdl *eqhdl = lpfc_get_eq_hdl(eqidx);
cpup->eq = eqidx;
cpup->flag |= flag;
lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "3336 Set Affinity: CPU %d irq %d eq %d flag x%x\n",
cpu, eqhdl->irq, cpup->eq, cpup->flag);
}
/** * lpfc_cpu_map_array_init - Initialize cpu_map structure * @phba: pointer to lpfc hba data structure. * * The routine initializes the cpu_map array structure
*/ staticvoid
lpfc_cpu_map_array_init(struct lpfc_hba *phba)
{ struct lpfc_vector_map_info *cpup; struct lpfc_eq_intr_info *eqi; int cpu;
/** * lpfc_hba_eq_hdl_array_init - Initialize hba_eq_hdl structure * @phba: pointer to lpfc hba data structure. * * The routine initializes the hba_eq_hdl array structure
*/ staticvoid
lpfc_hba_eq_hdl_array_init(struct lpfc_hba *phba)
{ struct lpfc_hba_eq_hdl *eqhdl; int i;
for (i = 0; i < phba->cfg_irq_chann; i++) {
eqhdl = lpfc_get_eq_hdl(i);
eqhdl->irq = LPFC_IRQ_EMPTY;
eqhdl->phba = phba;
}
}
/** * lpfc_cpu_affinity_check - Check vector CPU affinity mappings * @phba: pointer to lpfc hba data structure. * @vectors: number of msix vectors allocated. * * The routine will figure out the CPU affinity assignment for every * MSI-X vector allocated for the HBA. * In addition, the CPU to IO channel mapping will be calculated * and the phba->sli4_hba.cpu_map array will reflect this.
*/ staticvoid
lpfc_cpu_affinity_check(struct lpfc_hba *phba, int vectors)
{ int i, cpu, idx, next_idx, new_cpu, start_cpu, first_cpu; int max_phys_id, min_phys_id; int max_core_id, min_core_id; struct lpfc_vector_map_info *cpup; struct lpfc_vector_map_info *new_cpup; #ifdef CONFIG_SCSI_LPFC_DEBUG_FS struct lpfc_hdwq_stat *c_stat; #endif
/* Update CPU map with physical id and core id of each CPU */
for_each_present_cpu(cpu) {
cpup = &phba->sli4_hba.cpu_map[cpu]; #ifdef CONFIG_X86
cpup->phys_id = topology_physical_package_id(cpu);
cpup->core_id = topology_core_id(cpu); if (lpfc_find_hyper(phba, cpu, cpup->phys_id, cpup->core_id))
cpup->flag |= LPFC_CPU_MAP_HYPER; #else /* No distinction between CPUs for other platforms */
cpup->phys_id = 0;
cpup->core_id = cpu; #endif
lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "3328 CPU %d physid %d coreid %d flag x%x\n",
cpu, cpup->phys_id, cpup->core_id, cpup->flag);
if (cpup->phys_id > max_phys_id)
max_phys_id = cpup->phys_id; if (cpup->phys_id < min_phys_id)
min_phys_id = cpup->phys_id;
if (cpup->core_id > max_core_id)
max_core_id = cpup->core_id; if (cpup->core_id < min_core_id)
min_core_id = cpup->core_id;
}
/* After looking at each irq vector assigned to this pcidev, its * possible to see that not ALL CPUs have been accounted for. * Next we will set any unassigned (unaffinitized) cpu map * entries to a IRQ on the same phys_id.
*/
first_cpu = cpumask_first(cpu_present_mask);
start_cpu = first_cpu;
/* Is this CPU entry unassigned */ if (cpup->eq == LPFC_VECTOR_MAP_EMPTY) { /* Mark CPU as IRQ not assigned by the kernel */
cpup->flag |= LPFC_CPU_MAP_UNASSIGN;
/* If so, find a new_cpup that is on the SAME * phys_id as cpup. start_cpu will start where we * left off so all unassigned entries don't get assgined * the IRQ of the first entry.
*/
new_cpu = start_cpu; for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {
new_cpup = &phba->sli4_hba.cpu_map[new_cpu]; if (!(new_cpup->flag & LPFC_CPU_MAP_UNASSIGN) &&
(new_cpup->eq != LPFC_VECTOR_MAP_EMPTY) &&
(new_cpup->phys_id == cpup->phys_id)) goto found_same;
new_cpu = lpfc_next_present_cpu(new_cpu);
} /* At this point, we leave the CPU as unassigned */ continue;
found_same: /* We found a matching phys_id, so copy the IRQ info */
cpup->eq = new_cpup->eq;
/* Bump start_cpu to the next slot to minmize the * chance of having multiple unassigned CPU entries * selecting the same IRQ.
*/
start_cpu = lpfc_next_present_cpu(new_cpu);
lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "3337 Set Affinity: CPU %d " "eq %d from peer cpu %d same " "phys_id (%d)\n",
cpu, cpup->eq, new_cpu,
cpup->phys_id);
}
}
/* Set any unassigned cpu map entries to a IRQ on any phys_id */
start_cpu = first_cpu;
/* Is this entry unassigned */ if (cpup->eq == LPFC_VECTOR_MAP_EMPTY) { /* Mark it as IRQ not assigned by the kernel */
cpup->flag |= LPFC_CPU_MAP_UNASSIGN;
/* If so, find a new_cpup thats on ANY phys_id * as the cpup. start_cpu will start where we * left off so all unassigned entries don't get * assigned the IRQ of the first entry.
*/
new_cpu = start_cpu; for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {
new_cpup = &phba->sli4_hba.cpu_map[new_cpu]; if (!(new_cpup->flag & LPFC_CPU_MAP_UNASSIGN) &&
(new_cpup->eq != LPFC_VECTOR_MAP_EMPTY)) goto found_any;
new_cpu = lpfc_next_present_cpu(new_cpu);
} /* We should never leave an entry unassigned */
lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "3339 Set Affinity: CPU %d " "eq %d UNASSIGNED\n",
cpup->hdwq, cpup->eq); continue;
found_any: /* We found an available entry, copy the IRQ info */
cpup->eq = new_cpup->eq;
/* Bump start_cpu to the next slot to minmize the * chance of having multiple unassigned CPU entries * selecting the same IRQ.
*/
start_cpu = lpfc_next_present_cpu(new_cpu);
lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "3338 Set Affinity: CPU %d " "eq %d from peer cpu %d (%d/%d)\n",
cpu, cpup->eq, new_cpu,
new_cpup->phys_id, new_cpup->core_id);
}
}
/* Assign hdwq indices that are unique across all cpus in the map * that are also FIRST_CPUs.
*/
idx = 0;
for_each_present_cpu(cpu) {
cpup = &phba->sli4_hba.cpu_map[cpu];
/* Only FIRST IRQs get a hdwq index assignment. */ if (!(cpup->flag & LPFC_CPU_FIRST_IRQ)) continue;
/* 1 to 1, the first LPFC_CPU_FIRST_IRQ cpus to a unique hdwq */
cpup->hdwq = idx;
idx++;
lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "3333 Set Affinity: CPU %d (phys %d core %d): " "hdwq %d eq %d flg x%x\n",
cpu, cpup->phys_id, cpup->core_id,
cpup->hdwq, cpup->eq, cpup->flag);
} /* Associate a hdwq with each cpu_map entry * This will be 1 to 1 - hdwq to cpu, unless there are less * hardware queues then CPUs. For that case we will just round-robin * the available hardware queues as they get assigned to CPUs. * The next_idx is the idx from the FIRST_CPU loop above to account * for irq_chann < hdwq. The idx is used for round-robin assignments * and needs to start at 0.
*/
next_idx = idx;
start_cpu = 0;
idx = 0;
for_each_present_cpu(cpu) {
cpup = &phba->sli4_hba.cpu_map[cpu];
/* FIRST cpus are already mapped. */ if (cpup->flag & LPFC_CPU_FIRST_IRQ) continue;
/* If the cfg_irq_chann < cfg_hdw_queue, set the hdwq * of the unassigned cpus to the next idx so that all * hdw queues are fully utilized.
*/ if (next_idx < phba->cfg_hdw_queue) {
cpup->hdwq = next_idx;
next_idx++; continue;
}
/* Not a First CPU and all hdw_queues are used. Reuse a * Hardware Queue for another CPU, so be smart about it * and pick one that has its IRQ/EQ mapped to the same phys_id * (CPU package) and core_id.
*/
new_cpu = start_cpu; for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {
new_cpup = &phba->sli4_hba.cpu_map[new_cpu]; if (new_cpup->hdwq != LPFC_VECTOR_MAP_EMPTY &&
new_cpup->phys_id == cpup->phys_id &&
new_cpup->core_id == cpup->core_id) { goto found_hdwq;
}
new_cpu = lpfc_next_present_cpu(new_cpu);
}
/* If we can't match both phys_id and core_id, * settle for just a phys_id match.
*/
new_cpu = start_cpu; for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {
new_cpup = &phba->sli4_hba.cpu_map[new_cpu]; if (new_cpup->hdwq != LPFC_VECTOR_MAP_EMPTY &&
new_cpup->phys_id == cpup->phys_id) goto found_hdwq;
new_cpu = lpfc_next_present_cpu(new_cpu);
}
/* Otherwise just round robin on cfg_hdw_queue */
cpup->hdwq = idx % phba->cfg_hdw_queue;
idx++; goto logit;
found_hdwq: /* We found an available entry, copy the IRQ info */
start_cpu = lpfc_next_present_cpu(new_cpu);
cpup->hdwq = new_cpup->hdwq;
logit:
lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "3335 Set Affinity: CPU %d (phys %d core %d): " "hdwq %d eq %d flg x%x\n",
cpu, cpup->phys_id, cpup->core_id,
cpup->hdwq, cpup->eq, cpup->flag);
}
/* * Initialize the cpu_map slots for not-present cpus in case * a cpu is hot-added. Perform a simple hdwq round robin assignment.
*/
idx = 0;
for_each_possible_cpu(cpu) {
cpup = &phba->sli4_hba.cpu_map[cpu]; #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
c_stat = per_cpu_ptr(phba->sli4_hba.c_stat, cpu);
c_stat->hdwq_no = cpup->hdwq; #endif if (cpup->hdwq != LPFC_VECTOR_MAP_EMPTY) continue;
/* The cpu_map array will be used later during initialization * when EQ / CQ / WQs are allocated and configured.
*/ return;
}
/** * lpfc_cpuhp_get_eq * * @phba: pointer to lpfc hba data structure. * @cpu: cpu going offline * @eqlist: eq list to append to
*/ staticint
lpfc_cpuhp_get_eq(struct lpfc_hba *phba, unsignedint cpu, struct list_head *eqlist)
{ conststruct cpumask *maskp; struct lpfc_queue *eq; struct cpumask *tmp;
u16 idx;
tmp = kzalloc(cpumask_size(), GFP_KERNEL); if (!tmp) return -ENOMEM;
for (idx = 0; idx < phba->cfg_irq_chann; idx++) {
maskp = pci_irq_get_affinity(phba->pcidev, idx); if (!maskp) continue; /* * if irq is not affinitized to the cpu going * then we don't need to poll the eq attached * to it.
*/ if (!cpumask_and(tmp, maskp, cpumask_of(cpu))) continue; /* get the cpus that are online and are affini- * tized to this irq vector. If the count is * more than 1 then cpuhp is not going to shut- * down this vector. Since this cpu has not * gone offline yet, we need >1.
*/
cpumask_and(tmp, maskp, cpu_online_mask); if (cpumask_weight(tmp) > 1) continue;
/* Now that we have an irq to shutdown, get the eq * mapped to this irq. Note: multiple hdwq's in * the software can share an eq, but eventually * only eq will be mapped to this vector
*/
eq = phba->sli4_hba.hba_eq_hdl[idx].eq;
list_add(&eq->_poll_list, eqlist);
}
kfree(tmp); return 0;
}
staticvoid __lpfc_cpuhp_remove(struct lpfc_hba *phba)
{ if (phba->sli_rev != LPFC_SLI_REV4) return;
cpuhp_state_remove_instance_nocalls(lpfc_cpuhp_state,
&phba->cpuhp); /* * unregistering the instance doesn't stop the polling * timer. Wait for the poll timer to retire.
*/
synchronize_rcu();
timer_delete_sync(&phba->cpuhp_poll_timer);
}
/** * lpfc_irq_rebalance - rebalances IRQ affinity according to cpuhp event * @phba: pointer to HBA context object. * @cpu: cpu going offline/online * @offline: true, cpu is going offline. false, cpu is coming online. * * If cpu is going offline, we'll try our best effort to find the next * online cpu on the phba's original_mask and migrate all offlining IRQ * affinities. * * If cpu is coming online, reaffinitize the IRQ back to the onlining cpu. * * Note: Call only if NUMA or NHT mode is enabled, otherwise rely on * PCI_IRQ_AFFINITY to auto-manage IRQ affinity. *
**/ staticvoid
lpfc_irq_rebalance(struct lpfc_hba *phba, unsignedint cpu, bool offline)
{ struct lpfc_vector_map_info *cpup; struct cpumask *aff_mask; unsignedint cpu_select, cpu_next, idx; conststruct cpumask *orig_mask;
if (phba->irq_chann_mode == NORMAL_MODE) return;
orig_mask = &phba->sli4_hba.irq_aff_mask;
if (!cpumask_test_cpu(cpu, orig_mask)) return;
cpup = &phba->sli4_hba.cpu_map[cpu];
if (!(cpup->flag & LPFC_CPU_FIRST_IRQ)) return;
if (offline) { /* Find next online CPU on original mask */
cpu_next = cpumask_next_wrap(cpu, orig_mask);
cpu_select = lpfc_next_online_cpu(orig_mask, cpu_next);
/* Found a valid CPU */ if ((cpu_select < nr_cpu_ids) && (cpu_select != cpu)) { /* Go through each eqhdl and ensure offlining * cpu aff_mask is migrated
*/ for (idx = 0; idx < phba->cfg_irq_chann; idx++) {
aff_mask = lpfc_get_aff_mask(idx);
/* Migrate affinity */ if (cpumask_test_cpu(cpu, aff_mask))
lpfc_irq_set_aff(lpfc_get_eq_hdl(idx),
cpu_select);
}
} else { /* Rely on irqbalance if no online CPUs left on NUMA */ for (idx = 0; idx < phba->cfg_irq_chann; idx++)
lpfc_irq_clear_aff(lpfc_get_eq_hdl(idx));
}
} else { /* Migrate affinity back to this CPU */
lpfc_irq_set_aff(lpfc_get_eq_hdl(cpup->eq), cpu);
}
}
if (__lpfc_cpuhp_checks(phba, &retval)) return retval;
lpfc_irq_rebalance(phba, cpu, false);
list_for_each_entry_safe(eq, next, &phba->poll_list, _poll_list) {
n = lpfc_find_cpu_handle(phba, eq->hdwq, LPFC_FIND_BY_HDWQ); if (n == cpu)
lpfc_sli4_stop_polling(eq);
}
return 0;
}
/** * 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. It also allocates MSI-X vectors and maps them * to cpus on the system. * * When cfg_irq_numa is enabled, the adapter will only allocate vectors for * the number of cpus on the same numa node as this adapter. The vectors are * allocated without requesting OS affinity mapping. A vector will be * allocated and assigned to each online and offline cpu. If the cpu is * online, then affinity will be set to that cpu. If the cpu is offline, then * affinity will be set to the nearest peer cpu within the numa node that is * online. If there are no online cpus within the numa node, affinity is not * assigned and the OS may do as it pleases. Note: cpu vector affinity mapping * is consistent with the way cpu online/offline is handled when cfg_irq_numa is * configured. * * If numa mode is not enabled and there is more than 1 vector allocated, then * the driver relies on the managed irq interface where the OS assigns vector to * cpu affinity. The driver will then use that affinity mapping to setup its * cpu mapping table. * * Return codes * 0 - successful * other values - error
**/ staticint
lpfc_sli4_enable_msix(struct lpfc_hba *phba)
{ int vectors, rc, index; char *name; conststruct cpumask *aff_mask = NULL; unsignedint cpu = 0, cpu_cnt = 0, cpu_select = nr_cpu_ids; struct lpfc_vector_map_info *cpup; struct lpfc_hba_eq_hdl *eqhdl; conststruct cpumask *maskp; unsignedint flags = PCI_IRQ_MSIX;
/* Set up MSI-X multi-message vectors */
vectors = phba->cfg_irq_chann;
if (phba->irq_chann_mode != NORMAL_MODE)
aff_mask = &phba->sli4_hba.irq_aff_mask;
if (aff_mask) {
cpu_cnt = cpumask_weight(aff_mask);
vectors = min(phba->cfg_irq_chann, cpu_cnt);
/* cpu: iterates over aff_mask including offline or online * cpu_select: iterates over online aff_mask to set affinity
*/
cpu = cpumask_first(aff_mask);
cpu_select = lpfc_next_online_cpu(aff_mask, cpu);
} else {
flags |= PCI_IRQ_AFFINITY;
}
if (aff_mask) { /* If found a neighboring online cpu, set affinity */ if (cpu_select < nr_cpu_ids)
lpfc_irq_set_aff(eqhdl, cpu_select);
/* Assign EQ to cpu_map */
lpfc_assign_eq_map_info(phba, index,
LPFC_CPU_FIRST_IRQ,
cpu);
/* Iterate to next offline or online cpu in aff_mask */
cpu = cpumask_next(cpu, aff_mask);
/* Find next online cpu in aff_mask to set affinity */
cpu_select = lpfc_next_online_cpu(aff_mask, cpu);
} elseif (vectors == 1) {
cpu = cpumask_first(cpu_present_mask);
lpfc_assign_eq_map_info(phba, index, LPFC_CPU_FIRST_IRQ,
cpu);
} else {
maskp = pci_irq_get_affinity(phba->pcidev, index);
/* Loop through all CPUs associated with vector index */
for_each_cpu_and(cpu, maskp, cpu_present_mask) {
cpup = &phba->sli4_hba.cpu_map[cpu];
/* If this is the first CPU thats assigned to * this vector, set LPFC_CPU_FIRST_IRQ. * * With certain platforms its possible that irq * vectors are affinitized to all the cpu's. * This can result in each cpu_map.eq to be set * to the last vector, resulting in overwrite * of all the previous cpu_map.eq. Ensure that * each vector receives a place in cpu_map. * Later call to lpfc_cpu_affinity_check will * ensure we are nicely balanced out.
*/ if (cpup->eq != LPFC_VECTOR_MAP_EMPTY) continue;
lpfc_assign_eq_map_info(phba, index,
LPFC_CPU_FIRST_IRQ,
cpu); break;
}
}
}
if (vectors != phba->cfg_irq_chann) {
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "3238 Reducing IO channels to match number of " "MSI-X vectors, requested %d got %d\n",
phba->cfg_irq_chann, vectors); if (phba->cfg_irq_chann > vectors)
phba->cfg_irq_chann = vectors;
}
return rc;
cfg_fail_out: /* free the irq already requested */ for (--index; index >= 0; index--) {
eqhdl = lpfc_get_eq_hdl(index);
lpfc_irq_clear_aff(eqhdl);
free_irq(eqhdl->irq, eqhdl);
}
/** * 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_alloc_irq_vectors() 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
**/ staticint
lpfc_sli4_enable_msi(struct lpfc_hba *phba)
{ int rc, index; unsignedint cpu; struct lpfc_hba_eq_hdl *eqhdl;
cpu = cpumask_first(cpu_present_mask);
lpfc_assign_eq_map_info(phba, 0, LPFC_CPU_FIRST_IRQ, cpu);
for (index = 0; index < phba->cfg_irq_chann; index++) {
eqhdl = lpfc_get_eq_hdl(index);
eqhdl->idx = index;
}
return 0;
}
/** * lpfc_sli4_enable_intr - Enable device interrupt to SLI-4 device * @phba: pointer to lpfc hba data structure. * @cfg_mode: Interrupt configuration mode (INTx, MSI or MSI-X). * * 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 * Interrupt mode (2, 1, 0) - successful * LPFC_INTR_ERROR - 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, idx;
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) { struct lpfc_hba_eq_hdl *eqhdl; unsignedint cpu;
/** * 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.
**/ staticvoid
lpfc_sli4_disable_intr(struct lpfc_hba *phba)
{ /* Disable the currently initialized interrupt mode */ if (phba->intr_type == MSIX) { int index; struct lpfc_hba_eq_hdl *eqhdl;
/* Free up MSI-X multi-message vectors */ for (index = 0; index < phba->cfg_irq_chann; index++) {
eqhdl = lpfc_get_eq_hdl(index);
lpfc_irq_clear_aff(eqhdl);
free_irq(eqhdl->irq, eqhdl);
}
} else {
free_irq(phba->pcidev->irq, phba);
}
/** * 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.
**/ staticvoid
lpfc_unset_hba(struct lpfc_hba *phba)
{
set_bit(FC_UNLOADING, &phba->pport->load_flag);
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.
**/ staticvoid
lpfc_sli4_xri_exchange_busy_wait(struct lpfc_hba *phba)
{ struct lpfc_sli4_hdw_queue *qp; int idx, ccnt; int wait_time = 0; int io_xri_cmpl = 1; int nvmet_xri_cmpl = 1; int els_xri_cmpl = list_empty(&phba->sli4_hba.lpfc_abts_els_sgl_list);
/* Driver just aborted IOs during the hba_unset process. Pause * here to give the HBA time to complete the IO and get entries * into the abts lists.
*/
msleep(LPFC_XRI_EXCH_BUSY_WAIT_T1 * 5);
/* Wait for NVME pending IO to flush back to transport. */ if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
lpfc_nvme_wait_for_io_drain(phba);
ccnt = 0; for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
qp = &phba->sli4_hba.hdwq[idx];
io_xri_cmpl = list_empty(&qp->lpfc_abts_io_buf_list); if (!io_xri_cmpl) /* if list is NOT empty */
ccnt++;
} if (ccnt)
io_xri_cmpl = 0;
if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
nvmet_xri_cmpl =
list_empty(&phba->sli4_hba.lpfc_abts_nvmet_ctx_list);
}
ccnt = 0; for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
qp = &phba->sli4_hba.hdwq[idx];
io_xri_cmpl = list_empty(
&qp->lpfc_abts_io_buf_list); if (!io_xri_cmpl) /* if list is NOT empty */
ccnt++;
} if (ccnt)
io_xri_cmpl = 0;
/** * 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.
**/ staticvoid
lpfc_sli4_hba_unset(struct lpfc_hba *phba)
{ int wait_cnt = 0;
LPFC_MBOXQ_t *mboxq; struct pci_dev *pdev = phba->pcidev;
int
lpfc_unreg_congestion_buf(struct lpfc_hba *phba)
{
lpfc_cmf_stop(phba); return __lpfc_reg_congestion_buf(phba, 0);
}
int
lpfc_reg_congestion_buf(struct lpfc_hba *phba)
{ return __lpfc_reg_congestion_buf(phba, 1);
}
/** * 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; bool exp_wqcq_pages = true; 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;
/* Check for Extended Pre-Registered SGL support */
phba->cfg_xpsgl = bf_get(cfg_xpsgl, mbx_sli4_parameters);
/* Check for firmware nvme support */
rc = (bf_get(cfg_nvme, mbx_sli4_parameters) &&
bf_get(cfg_xib, mbx_sli4_parameters));
if (rc) { /* Save this to indicate the Firmware supports NVME */
sli4_params->nvme = 1;
/* Firmware NVME support, check driver FC4 NVME support */ if (phba->cfg_enable_fc4_type == LPFC_ENABLE_FCP) {
lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_NVME, "6133 Disabling NVME support: " "FC4 type not supported: x%x\n",
phba->cfg_enable_fc4_type); goto fcponly;
}
} else { /* No firmware NVME support, check driver FC4 NVME support */
sli4_params->nvme = 0; if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_NVME, "6101 Disabling NVME support: Not " "supported by firmware (%d %d) x%x\n",
bf_get(cfg_nvme, mbx_sli4_parameters),
bf_get(cfg_xib, mbx_sli4_parameters),
phba->cfg_enable_fc4_type);
fcponly:
phba->nvmet_support = 0;
phba->cfg_nvmet_mrq = 0;
phba->cfg_nvme_seg_cnt = 0;
/* If no FC4 type support, move to just SCSI support */ if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP)) return -ENODEV;
phba->cfg_enable_fc4_type = LPFC_ENABLE_FCP;
}
}
/* If the NVME FC4 type is enabled, scale the sg_seg_cnt to * accommodate 512K and 1M IOs in a single nvme buf.
*/ if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
phba->cfg_sg_seg_cnt = LPFC_MAX_NVME_SEG_CNT;
/* Enable embedded Payload BDE if support is indicated */ if (bf_get(cfg_pbde, mbx_sli4_parameters))
phba->cfg_enable_pbde = 1; else
phba->cfg_enable_pbde = 0;
/* * To support Suppress Response feature we must satisfy 3 conditions. * lpfc_suppress_rsp module parameter must be set (default). * In SLI4-Parameters Descriptor: * Extended Inline Buffers (XIB) must be supported. * Suppress Response IU Not Supported (SRIUNS) must NOT be supported * (double negative).
*/ if (phba->cfg_suppress_rsp && bf_get(cfg_xib, mbx_sli4_parameters) &&
!(bf_get(cfg_nosr, mbx_sli4_parameters)))
phba->sli.sli_flag |= LPFC_SLI_SUPPRESS_RSP; else
phba->cfg_suppress_rsp = 0;
if (bf_get(cfg_eqdr, mbx_sli4_parameters))
phba->sli.sli_flag |= LPFC_SLI_USE_EQDR;
/* 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;
/* * Check whether the adapter supports an embedded copy of the * FCP CMD IU within the WQE for FCP_Ixxx commands. In order * to use this option, 128-byte WQEs must be used.
*/ if (bf_get(cfg_ext_embed_cb, mbx_sli4_parameters))
phba->fcp_embed_io = 1; else
phba->fcp_embed_io = 0;
if ((bf_get(cfg_cqpsize, mbx_sli4_parameters) & LPFC_CQ_16K_PAGE_SZ) &&
(bf_get(cfg_wqpsize, mbx_sli4_parameters) & LPFC_WQ_16K_PAGE_SZ) &&
exp_wqcq_pages &&
(sli4_params->wqsize & LPFC_WQ_SZ128_SUPPORT))
phba->enab_exp_wqcq_pages = 1; else
phba->enab_exp_wqcq_pages = 0; /* * Check if the SLI port supports MDS Diagnostics
*/ if (bf_get(cfg_mds_diags, mbx_sli4_parameters))
phba->mds_diags_support = 1; else
phba->mds_diags_support = 0;
/* * Check if the SLI port supports NSLER
*/ if (bf_get(cfg_nsler, mbx_sli4_parameters))
phba->nsler = 1; else
phba->nsler = 0;
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
**/ staticint
lpfc_pci_probe_one_s3(struct pci_dev *pdev, conststruct 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;
/* 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 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;
}
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_TRACE_EVENT, "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_TRACE_EVENT, "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);
/** * 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.
**/ staticvoid
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;
set_bit(FC_UNLOADING, &vport->load_flag);
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 with the physical port */
fc_remove_host(shost);
scsi_remove_host(shost);
/* Clean up all nodes, mailboxes and IOs. */
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);
/* * Call scsi_free before mem_free since scsi bufs are released to their * corresponding pools here.
*/
lpfc_scsi_free(phba);
lpfc_free_iocb_list(phba);
/** * lpfc_pci_suspend_one_s3 - PCI func to suspend SLI-3 device for power mgmnt * @dev_d: pointer to 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 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
**/ staticint __maybe_unused
lpfc_pci_suspend_one_s3(struct device *dev_d)
{ struct Scsi_Host *shost = dev_get_drvdata(dev_d); 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);
return 0;
}
/** * lpfc_pci_resume_one_s3 - PCI func to resume SLI-3 device for power mgmnt * @dev_d: pointer to 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
**/ staticint __maybe_unused
lpfc_pci_resume_one_s3(struct device *dev_d)
{ struct Scsi_Host *shost = dev_get_drvdata(dev_d); 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");
/* 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;
}
/* 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.
**/ staticvoid
lpfc_sli_prep_dev_for_recover(struct lpfc_hba *phba)
{
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "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.
*/
lpfc_sli_abort_fcp_rings(phba);
}
/** * 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.
**/ staticvoid
lpfc_sli_prep_dev_for_reset(struct lpfc_hba *phba)
{
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "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_io_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.
**/ staticvoid
lpfc_sli_prep_dev_for_perm_failure(struct lpfc_hba *phba)
{
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "2711 PCI channel permanent disable for failure\n"); /* Block all SCSI devices' I/Os on the host */
lpfc_scsi_dev_block(phba);
lpfc_sli4_prep_dev_for_reset(phba);
/* stop all timers */
lpfc_stop_hba_timers(phba);
/* Clean up all driver's outstanding SCSI I/Os */
lpfc_sli_flush_io_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_TRACE_EVENT, "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);
/* 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.
*/ staticvoid
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);
}
/** * 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;
/** * lpfc_sli4_get_iocb_cnt - Calculate the # of total IOCBs to reserve * @phba: pointer to lpfc hba data structure. * * returns the number of ELS/CT + NVMET IOCBs to reserve
**/ int
lpfc_sli4_get_iocb_cnt(struct lpfc_hba *phba)
{ int max_xri = lpfc_sli4_get_els_iocb_cnt(phba);
if (phba->nvmet_support)
max_xri += LPFC_NVMET_BUF_POST; return max_xri;
}
/** * lpfc_sli4_request_firmware_update - Request linux generic firmware upgrade * @phba: pointer to lpfc hba data structure. * @fw_upgrade: which firmware to update. * * 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)
{ char file_name[ELX_FW_NAME_SIZE] = {0}; int ret; conststruct 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;
if (fw_upgrade == INT_FW_UPGRADE) {
ret = request_firmware_nowait(THIS_MODULE, FW_ACTION_UEVENT,
file_name, &phba->pcidev->dev,
GFP_KERNEL, (void *)phba,
lpfc_write_firmware);
} elseif (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
**/ staticint
lpfc_pci_probe_one_s4(struct pci_dev *pdev, conststruct 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;
/* 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 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;
}
/* 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_unset_driver_resource_s4;
}
/* Get the default values for Model Name and Description */
lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
/* 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 */
phba->pport = NULL;
lpfc_stop_port(phba);
/* Set up SLI-4 HBA */ if (lpfc_sli4_hba_setup(phba)) {
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "1421 Failed to set up hba\n");
error = -ENODEV; goto out_free_sysfs_attr;
}
/* 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);
/* NVME support in FW earlier in the driver load corrects the * FC4 type making a check for nvme_support unnecessary.
*/ if (phba->nvmet_support == 0) { if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) { /* Create NVME binding with nvme_fc_transport. This * ensures the vport is initialized. If the localport * create fails, it should not unload the driver to * support field issues.
*/
error = lpfc_nvme_create_localport(vport); if (error) {
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "6004 NVME registration " "failed, error x%x\n",
error);
}
}
}
/* check for firmware upgrade or downgrade */ if (phba->cfg_request_firmware_upgrade)
lpfc_sli4_request_firmware_update(phba, INT_FW_UPGRADE);
/* Check if there are static vports to be created. */
lpfc_create_static_vport(phba);
/** * 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.
**/ staticvoid
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 */
set_bit(FC_UNLOADING, &vport->load_flag); if (phba->cgn_i)
lpfc_unreg_congestion_buf(phba);
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 with the physical port */
fc_remove_host(shost);
scsi_remove_host(shost);
/* Perform ndlp cleanup on the physical port. The nvme and nvmet * localports are destroyed after to cleanup all transport memory.
*/
lpfc_cleanup(vport);
lpfc_nvmet_destroy_targetport(phba);
lpfc_nvme_destroy_localport(vport);
/* De-allocate multi-XRI pools */ if (phba->cfg_xri_rebalancing)
lpfc_destroy_multixri_pools(phba);
/* * 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);
/* Perform scsi free before driver resource_unset since scsi * buffers are released to their corresponding pools here.
*/
lpfc_io_free(phba);
lpfc_free_iocb_list(phba);
lpfc_sli4_hba_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 * @dev_d: pointer to device * * 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
**/ staticint __maybe_unused
lpfc_pci_suspend_one_s4(struct device *dev_d)
{ struct Scsi_Host *shost = dev_get_drvdata(dev_d); 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);
return 0;
}
/** * lpfc_pci_resume_one_s4 - PCI func to resume SLI-4 device for power mgmnt * @dev_d: pointer to 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
**/ staticint __maybe_unused
lpfc_pci_resume_one_s4(struct device *dev_d)
{ struct Scsi_Host *shost = dev_get_drvdata(dev_d); 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");
/* 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;
}
/* 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.
**/ staticvoid
lpfc_sli4_prep_dev_for_recover(struct lpfc_hba *phba)
{
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "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.
*/
lpfc_sli_abort_fcp_rings(phba);
}
/** * 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.
**/ staticvoid
lpfc_sli4_prep_dev_for_reset(struct lpfc_hba *phba)
{ int offline = pci_channel_offline(phba->pcidev);
/* Block any management I/Os to the device */
lpfc_block_mgmt_io(phba, LPFC_MBX_NO_WAIT);
/* HBA_PCI_ERR was set in io_error_detect */
lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT); /* Flush all driver's outstanding I/Os as we are to reset */
lpfc_sli_flush_io_rings(phba);
lpfc_offline(phba);
/** * 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.
**/ staticvoid
lpfc_sli4_prep_dev_for_perm_failure(struct lpfc_hba *phba)
{
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "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 I/Os */
lpfc_sli_flush_io_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; bool hba_pci_err;
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:
hba_pci_err = test_and_set_bit(HBA_PCI_ERR, &phba->bit_flags); /* Fatal error, prepare for slot reset */ if (!hba_pci_err)
lpfc_sli4_prep_dev_for_reset(phba); else
lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2832 Already handling PCI error " "state: x%x\n", state); return PCI_ERS_RESULT_NEED_RESET; case pci_channel_io_perm_failure:
set_bit(HBA_PCI_ERR, &phba->bit_flags); /* Permanent failure, prepare for device down */
lpfc_sli4_prep_dev_for_perm_failure(phba); return PCI_ERS_RESULT_DISCONNECT; default:
hba_pci_err = test_and_set_bit(HBA_PCI_ERR, &phba->bit_flags); if (!hba_pci_err)
lpfc_sli4_prep_dev_for_reset(phba); /* Unknown state, prepare and request slot reset */
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "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; bool hba_pci_err;
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);
hba_pci_err = test_and_clear_bit(HBA_PCI_ERR, &phba->bit_flags); if (!hba_pci_err)
dev_info(&pdev->dev, "hba_pci_err was not set, recovering slot reset.\n"); /* * 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);
/* 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.
**/ staticvoid
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_sli_brdrestart(phba); /* Bring the device back online */
lpfc_online(phba);
}
}
/** * 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
**/ staticint
lpfc_pci_probe_one(struct pci_dev *pdev, conststruct pci_device_id *pid)
{ int rc; struct lpfc_sli_intf intf;
if (pci_read_config_dword(pdev, LPFC_SLI_INTF, &intf.word0)) return -ENODEV;
/** * 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.
**/ staticvoid
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;
/** * lpfc_pci_suspend_one - lpfc PCI func to suspend dev for power management * @dev: pointer to 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 suspend routine, which will * suspend the device. * * Return code * 0 - driver suspended the device * Error otherwise
**/ staticint __maybe_unused
lpfc_pci_suspend_one(struct device *dev)
{ struct Scsi_Host *shost = dev_get_drvdata(dev); struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba; int rc = -ENODEV;
/** * lpfc_pci_resume_one - lpfc PCI func to resume dev for power management * @dev: pointer to 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
**/ staticint __maybe_unused
lpfc_pci_resume_one(struct device *dev)
{ struct Scsi_Host *shost = dev_get_drvdata(dev); struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba; int rc = -ENODEV;
/** * 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;
if (phba->link_state == LPFC_HBA_ERROR &&
test_bit(HBA_IOQ_FLUSH, &phba->hba_flag)) return PCI_ERS_RESULT_NEED_RESET;
/** * 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;
/** * 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.
**/ staticvoid
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;
/** * lpfc_sli4_oas_verify - Verify OAS is supported by this adapter * @phba: pointer to lpfc hba data structure. * * This routine checks to see if OAS is supported for this adapter. If * supported, the configure Flash Optimized Fabric flag is set. Otherwise, * the enable oas flag is cleared and the pool created for OAS device data * is destroyed. *
**/ staticvoid
lpfc_sli4_oas_verify(struct lpfc_hba *phba)
{
/** * lpfc_sli4_ras_init - Verify RAS-FW log is supported by this adapter * @phba: pointer to lpfc hba data structure. * * This routine checks to see if RAS is supported by the adapter. Check the * function through which RAS support enablement is to be done.
**/ void
lpfc_sli4_ras_init(struct lpfc_hba *phba)
{ /* if ASIC_GEN_NUM >= 0xC) */ if ((bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
LPFC_SLI_INTF_IF_TYPE_6) ||
(bf_get(lpfc_sli_intf_sli_family, &phba->sli4_hba.sli_intf) ==
LPFC_SLI_INTF_FAMILY_G6)) {
phba->ras_fwlog.ras_hwsupport = true; if (phba->cfg_ras_fwlog_func == PCI_FUNC(phba->pcidev->devfn) &&
phba->cfg_ras_fwlog_buffsize)
phba->ras_fwlog.ras_enabled = true; else
phba->ras_fwlog.ras_enabled = false;
} else {
phba->ras_fwlog.ras_hwsupport = false;
}
}
/** * 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
*/ staticint __init
lpfc_init(void)
{ int error = 0;
error = misc_register(&lpfc_mgmt_dev); if (error)
printk(KERN_ERR "Could not register lpfcmgmt device, " "misc_register returned with status %d", 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.
*/ staticvoid __exit
lpfc_exit(void)
{
misc_deregister(&lpfc_mgmt_dev);
pci_unregister_driver(&lpfc_driver);
cpuhp_remove_multi_state(lpfc_cpuhp_state);
fc_release_transport(lpfc_transport_template);
fc_release_transport(lpfc_vport_transport_template);
idr_destroy(&lpfc_hba_index);
}
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