diff options
author | <jejb@titanic.il.steeleye.com> | 2005-04-18 01:05:31 +0400 |
---|---|---|
committer | James Bottomley <jejb@titanic> | 2005-04-18 22:50:53 +0400 |
commit | dea3101e0a5c897d2c9351a7444e139db9f40247 (patch) | |
tree | 61de19e98eed08bb760703b362eab2038c34f261 /drivers/scsi/lpfc/lpfc_mbox.c | |
parent | 8e8790415e91964096f862a58cacb55d2bc9a817 (diff) | |
download | linux-dea3101e0a5c897d2c9351a7444e139db9f40247.tar.xz |
lpfc: add Emulex FC driver version 8.0.28
From: James.Smart@Emulex.Com
Modified for kernel import and
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_mbox.c')
-rw-r--r-- | drivers/scsi/lpfc/lpfc_mbox.c | 646 |
1 files changed, 646 insertions, 0 deletions
diff --git a/drivers/scsi/lpfc/lpfc_mbox.c b/drivers/scsi/lpfc/lpfc_mbox.c new file mode 100644 index 000000000000..8712a80fe747 --- /dev/null +++ b/drivers/scsi/lpfc/lpfc_mbox.c @@ -0,0 +1,646 @@ +/******************************************************************* + * This file is part of the Emulex Linux Device Driver for * + * Enterprise Fibre Channel Host Bus Adapters. * + * Refer to the README file included with this package for * + * driver version and adapter support. * + * Copyright (C) 2004 Emulex Corporation. * + * www.emulex.com * + * * + * This program is free software; you can redistribute it and/or * + * modify it under the terms of the GNU General Public License * + * as published by the Free Software Foundation; either version 2 * + * of the License, or (at your option) any later version. * + * * + * This program is distributed in the hope that it will be useful, * + * but WITHOUT ANY WARRANTY; without even the implied warranty of * + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * + * GNU General Public License for more details, a copy of which * + * can be found in the file COPYING included with this package. * + *******************************************************************/ + +/* + * $Id: lpfc_mbox.c 1.85 2005/04/13 11:59:11EDT sf_support Exp $ + */ + +#include <linux/blkdev.h> +#include <linux/pci.h> +#include <linux/interrupt.h> + +#include "lpfc_hw.h" +#include "lpfc_sli.h" +#include "lpfc_disc.h" +#include "lpfc_scsi.h" +#include "lpfc.h" +#include "lpfc_logmsg.h" +#include "lpfc_crtn.h" +#include "lpfc_compat.h" + +/**********************************************/ + +/* mailbox command */ +/**********************************************/ +void +lpfc_dump_mem(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb, uint16_t offset) +{ + MAILBOX_t *mb; + void *ctx; + + mb = &pmb->mb; + ctx = pmb->context2; + + /* Setup to dump VPD region */ + memset(pmb, 0, sizeof (LPFC_MBOXQ_t)); + mb->mbxCommand = MBX_DUMP_MEMORY; + mb->un.varDmp.cv = 1; + mb->un.varDmp.type = DMP_NV_PARAMS; + mb->un.varDmp.entry_index = offset; + mb->un.varDmp.region_id = DMP_REGION_VPD; + mb->un.varDmp.word_cnt = (DMP_RSP_SIZE / sizeof (uint32_t)); + mb->un.varDmp.co = 0; + mb->un.varDmp.resp_offset = 0; + pmb->context2 = ctx; + mb->mbxOwner = OWN_HOST; + return; +} + +/**********************************************/ +/* lpfc_read_nv Issue a READ NVPARAM */ +/* mailbox command */ +/**********************************************/ +void +lpfc_read_nv(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb) +{ + MAILBOX_t *mb; + + mb = &pmb->mb; + memset(pmb, 0, sizeof (LPFC_MBOXQ_t)); + mb->mbxCommand = MBX_READ_NV; + mb->mbxOwner = OWN_HOST; + return; +} + +/**********************************************/ +/* lpfc_read_la Issue a READ LA */ +/* mailbox command */ +/**********************************************/ +int +lpfc_read_la(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb, struct lpfc_dmabuf *mp) +{ + MAILBOX_t *mb; + struct lpfc_sli *psli; + + psli = &phba->sli; + mb = &pmb->mb; + memset(pmb, 0, sizeof (LPFC_MBOXQ_t)); + + INIT_LIST_HEAD(&mp->list); + mb->mbxCommand = MBX_READ_LA64; + mb->un.varReadLA.un.lilpBde64.tus.f.bdeSize = 128; + mb->un.varReadLA.un.lilpBde64.addrHigh = putPaddrHigh(mp->phys); + mb->un.varReadLA.un.lilpBde64.addrLow = putPaddrLow(mp->phys); + + /* Save address for later completion and set the owner to host so that + * the FW knows this mailbox is available for processing. + */ + pmb->context1 = (uint8_t *) mp; + mb->mbxOwner = OWN_HOST; + return (0); +} + +/**********************************************/ +/* lpfc_clear_la Issue a CLEAR LA */ +/* mailbox command */ +/**********************************************/ +void +lpfc_clear_la(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb) +{ + MAILBOX_t *mb; + + mb = &pmb->mb; + memset(pmb, 0, sizeof (LPFC_MBOXQ_t)); + + mb->un.varClearLA.eventTag = phba->fc_eventTag; + mb->mbxCommand = MBX_CLEAR_LA; + mb->mbxOwner = OWN_HOST; + return; +} + +/**************************************************/ +/* lpfc_config_link Issue a CONFIG LINK */ +/* mailbox command */ +/**************************************************/ +void +lpfc_config_link(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb) +{ + MAILBOX_t *mb = &pmb->mb; + memset(pmb, 0, sizeof (LPFC_MBOXQ_t)); + + /* NEW_FEATURE + * SLI-2, Coalescing Response Feature. + */ + if (phba->cfg_cr_delay) { + mb->un.varCfgLnk.cr = 1; + mb->un.varCfgLnk.ci = 1; + mb->un.varCfgLnk.cr_delay = phba->cfg_cr_delay; + mb->un.varCfgLnk.cr_count = phba->cfg_cr_count; + } + + mb->un.varCfgLnk.myId = phba->fc_myDID; + mb->un.varCfgLnk.edtov = phba->fc_edtov; + mb->un.varCfgLnk.arbtov = phba->fc_arbtov; + mb->un.varCfgLnk.ratov = phba->fc_ratov; + mb->un.varCfgLnk.rttov = phba->fc_rttov; + mb->un.varCfgLnk.altov = phba->fc_altov; + mb->un.varCfgLnk.crtov = phba->fc_crtov; + mb->un.varCfgLnk.citov = phba->fc_citov; + + if (phba->cfg_ack0) + mb->un.varCfgLnk.ack0_enable = 1; + + mb->mbxCommand = MBX_CONFIG_LINK; + mb->mbxOwner = OWN_HOST; + return; +} + +/**********************************************/ +/* lpfc_init_link Issue an INIT LINK */ +/* mailbox command */ +/**********************************************/ +void +lpfc_init_link(struct lpfc_hba * phba, + LPFC_MBOXQ_t * pmb, uint32_t topology, uint32_t linkspeed) +{ + lpfc_vpd_t *vpd; + struct lpfc_sli *psli; + MAILBOX_t *mb; + + mb = &pmb->mb; + memset(pmb, 0, sizeof (LPFC_MBOXQ_t)); + + psli = &phba->sli; + switch (topology) { + case FLAGS_TOPOLOGY_MODE_LOOP_PT: + mb->un.varInitLnk.link_flags = FLAGS_TOPOLOGY_MODE_LOOP; + mb->un.varInitLnk.link_flags |= FLAGS_TOPOLOGY_FAILOVER; + break; + case FLAGS_TOPOLOGY_MODE_PT_PT: + mb->un.varInitLnk.link_flags = FLAGS_TOPOLOGY_MODE_PT_PT; + break; + case FLAGS_TOPOLOGY_MODE_LOOP: + mb->un.varInitLnk.link_flags = FLAGS_TOPOLOGY_MODE_LOOP; + break; + case FLAGS_TOPOLOGY_MODE_PT_LOOP: + mb->un.varInitLnk.link_flags = FLAGS_TOPOLOGY_MODE_PT_PT; + mb->un.varInitLnk.link_flags |= FLAGS_TOPOLOGY_FAILOVER; + break; + } + + /* NEW_FEATURE + * Setting up the link speed + */ + vpd = &phba->vpd; + if (vpd->rev.feaLevelHigh >= 0x02){ + switch(linkspeed){ + case LINK_SPEED_1G: + case LINK_SPEED_2G: + case LINK_SPEED_4G: + mb->un.varInitLnk.link_flags |= + FLAGS_LINK_SPEED; + mb->un.varInitLnk.link_speed = linkspeed; + break; + case LINK_SPEED_AUTO: + default: + mb->un.varInitLnk.link_speed = + LINK_SPEED_AUTO; + break; + } + + } + else + mb->un.varInitLnk.link_speed = LINK_SPEED_AUTO; + + mb->mbxCommand = (volatile uint8_t)MBX_INIT_LINK; + mb->mbxOwner = OWN_HOST; + mb->un.varInitLnk.fabric_AL_PA = phba->fc_pref_ALPA; + return; +} + +/**********************************************/ +/* lpfc_read_sparam Issue a READ SPARAM */ +/* mailbox command */ +/**********************************************/ +int +lpfc_read_sparam(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb) +{ + struct lpfc_dmabuf *mp; + MAILBOX_t *mb; + struct lpfc_sli *psli; + + psli = &phba->sli; + mb = &pmb->mb; + memset(pmb, 0, sizeof (LPFC_MBOXQ_t)); + + mb->mbxOwner = OWN_HOST; + + /* Get a buffer to hold the HBAs Service Parameters */ + + if (((mp = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL)) == 0) || + ((mp->virt = lpfc_mbuf_alloc(phba, 0, &(mp->phys))) == 0)) { + if (mp) + kfree(mp); + mb->mbxCommand = MBX_READ_SPARM64; + /* READ_SPARAM: no buffers */ + lpfc_printf_log(phba, + KERN_WARNING, + LOG_MBOX, + "%d:0301 READ_SPARAM: no buffers\n", + phba->brd_no); + return (1); + } + INIT_LIST_HEAD(&mp->list); + mb->mbxCommand = MBX_READ_SPARM64; + mb->un.varRdSparm.un.sp64.tus.f.bdeSize = sizeof (struct serv_parm); + mb->un.varRdSparm.un.sp64.addrHigh = putPaddrHigh(mp->phys); + mb->un.varRdSparm.un.sp64.addrLow = putPaddrLow(mp->phys); + + /* save address for completion */ + pmb->context1 = mp; + + return (0); +} + +/********************************************/ +/* lpfc_unreg_did Issue a UNREG_DID */ +/* mailbox command */ +/********************************************/ +void +lpfc_unreg_did(struct lpfc_hba * phba, uint32_t did, LPFC_MBOXQ_t * pmb) +{ + MAILBOX_t *mb; + + mb = &pmb->mb; + memset(pmb, 0, sizeof (LPFC_MBOXQ_t)); + + mb->un.varUnregDID.did = did; + + mb->mbxCommand = MBX_UNREG_D_ID; + mb->mbxOwner = OWN_HOST; + return; +} + +/***********************************************/ + +/* command to write slim */ +/***********************************************/ +void +lpfc_set_slim(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb, uint32_t addr, + uint32_t value) +{ + MAILBOX_t *mb; + + mb = &pmb->mb; + memset(pmb, 0, sizeof (LPFC_MBOXQ_t)); + + /* addr = 0x090597 is AUTO ABTS disable for ELS commands */ + /* addr = 0x052198 is DELAYED ABTS enable for ELS commands */ + + /* + * Always turn on DELAYED ABTS for ELS timeouts + */ + if ((addr == 0x052198) && (value == 0)) + value = 1; + + mb->un.varWords[0] = addr; + mb->un.varWords[1] = value; + + mb->mbxCommand = MBX_SET_SLIM; + mb->mbxOwner = OWN_HOST; + return; +} + +/**********************************************/ +/* lpfc_read_nv Issue a READ CONFIG */ +/* mailbox command */ +/**********************************************/ +void +lpfc_read_config(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb) +{ + MAILBOX_t *mb; + + mb = &pmb->mb; + memset(pmb, 0, sizeof (LPFC_MBOXQ_t)); + + mb->mbxCommand = MBX_READ_CONFIG; + mb->mbxOwner = OWN_HOST; + return; +} + +/********************************************/ +/* lpfc_reg_login Issue a REG_LOGIN */ +/* mailbox command */ +/********************************************/ +int +lpfc_reg_login(struct lpfc_hba * phba, + uint32_t did, uint8_t * param, LPFC_MBOXQ_t * pmb, uint32_t flag) +{ + uint8_t *sparam; + struct lpfc_dmabuf *mp; + MAILBOX_t *mb; + struct lpfc_sli *psli; + + psli = &phba->sli; + mb = &pmb->mb; + memset(pmb, 0, sizeof (LPFC_MBOXQ_t)); + + mb->un.varRegLogin.rpi = 0; + mb->un.varRegLogin.did = did; + mb->un.varWords[30] = flag; /* Set flag to issue action on cmpl */ + + mb->mbxOwner = OWN_HOST; + + /* Get a buffer to hold NPorts Service Parameters */ + if (((mp = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL)) == NULL) || + ((mp->virt = lpfc_mbuf_alloc(phba, 0, &(mp->phys))) == 0)) { + if (mp) + kfree(mp); + + mb->mbxCommand = MBX_REG_LOGIN64; + /* REG_LOGIN: no buffers */ + lpfc_printf_log(phba, + KERN_WARNING, + LOG_MBOX, + "%d:0302 REG_LOGIN: no buffers Data x%x x%x\n", + phba->brd_no, + (uint32_t) did, (uint32_t) flag); + return (1); + } + INIT_LIST_HEAD(&mp->list); + sparam = mp->virt; + + /* Copy param's into a new buffer */ + memcpy(sparam, param, sizeof (struct serv_parm)); + + /* save address for completion */ + pmb->context1 = (uint8_t *) mp; + + mb->mbxCommand = MBX_REG_LOGIN64; + mb->un.varRegLogin.un.sp64.tus.f.bdeSize = sizeof (struct serv_parm); + mb->un.varRegLogin.un.sp64.addrHigh = putPaddrHigh(mp->phys); + mb->un.varRegLogin.un.sp64.addrLow = putPaddrLow(mp->phys); + + return (0); +} + +/**********************************************/ +/* lpfc_unreg_login Issue a UNREG_LOGIN */ +/* mailbox command */ +/**********************************************/ +void +lpfc_unreg_login(struct lpfc_hba * phba, uint32_t rpi, LPFC_MBOXQ_t * pmb) +{ + MAILBOX_t *mb; + + mb = &pmb->mb; + memset(pmb, 0, sizeof (LPFC_MBOXQ_t)); + + mb->un.varUnregLogin.rpi = (uint16_t) rpi; + mb->un.varUnregLogin.rsvd1 = 0; + + mb->mbxCommand = MBX_UNREG_LOGIN; + mb->mbxOwner = OWN_HOST; + return; +} + +static void +lpfc_config_pcb_setup(struct lpfc_hba * phba) +{ + struct lpfc_sli *psli = &phba->sli; + struct lpfc_sli_ring *pring; + PCB_t *pcbp = &phba->slim2p->pcb; + dma_addr_t pdma_addr; + uint32_t offset; + uint32_t iocbCnt; + int i; + + psli->MBhostaddr = (uint32_t *)&phba->slim2p->mbx; + pcbp->maxRing = (psli->num_rings - 1); + + iocbCnt = 0; + for (i = 0; i < psli->num_rings; i++) { + pring = &psli->ring[i]; + /* A ring MUST have both cmd and rsp entries defined to be + valid */ + if ((pring->numCiocb == 0) || (pring->numRiocb == 0)) { + pcbp->rdsc[i].cmdEntries = 0; + pcbp->rdsc[i].rspEntries = 0; + pcbp->rdsc[i].cmdAddrHigh = 0; + pcbp->rdsc[i].rspAddrHigh = 0; + pcbp->rdsc[i].cmdAddrLow = 0; + pcbp->rdsc[i].rspAddrLow = 0; + pring->cmdringaddr = NULL; + pring->rspringaddr = NULL; + continue; + } + /* Command ring setup for ring */ + pring->cmdringaddr = + (void *)&phba->slim2p->IOCBs[iocbCnt]; + pcbp->rdsc[i].cmdEntries = pring->numCiocb; + + offset = (uint8_t *)&phba->slim2p->IOCBs[iocbCnt] - + (uint8_t *)phba->slim2p; + pdma_addr = phba->slim2p_mapping + offset; + pcbp->rdsc[i].cmdAddrHigh = putPaddrHigh(pdma_addr); + pcbp->rdsc[i].cmdAddrLow = putPaddrLow(pdma_addr); + iocbCnt += pring->numCiocb; + + /* Response ring setup for ring */ + pring->rspringaddr = + (void *)&phba->slim2p->IOCBs[iocbCnt]; + + pcbp->rdsc[i].rspEntries = pring->numRiocb; + offset = (uint8_t *)&phba->slim2p->IOCBs[iocbCnt] - + (uint8_t *)phba->slim2p; + pdma_addr = phba->slim2p_mapping + offset; + pcbp->rdsc[i].rspAddrHigh = putPaddrHigh(pdma_addr); + pcbp->rdsc[i].rspAddrLow = putPaddrLow(pdma_addr); + iocbCnt += pring->numRiocb; + } +} + +void +lpfc_read_rev(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb) +{ + MAILBOX_t *mb; + + mb = &pmb->mb; + memset(pmb, 0, sizeof (LPFC_MBOXQ_t)); + mb->un.varRdRev.cv = 1; + mb->mbxCommand = MBX_READ_REV; + mb->mbxOwner = OWN_HOST; + return; +} + +void +lpfc_config_ring(struct lpfc_hba * phba, int ring, LPFC_MBOXQ_t * pmb) +{ + int i; + MAILBOX_t *mb = &pmb->mb; + struct lpfc_sli *psli; + struct lpfc_sli_ring *pring; + + memset(pmb, 0, sizeof (LPFC_MBOXQ_t)); + + mb->un.varCfgRing.ring = ring; + mb->un.varCfgRing.maxOrigXchg = 0; + mb->un.varCfgRing.maxRespXchg = 0; + mb->un.varCfgRing.recvNotify = 1; + + psli = &phba->sli; + pring = &psli->ring[ring]; + mb->un.varCfgRing.numMask = pring->num_mask; + mb->mbxCommand = MBX_CONFIG_RING; + mb->mbxOwner = OWN_HOST; + + /* Is this ring configured for a specific profile */ + if (pring->prt[0].profile) { + mb->un.varCfgRing.profile = pring->prt[0].profile; + return; + } + + /* Otherwise we setup specific rctl / type masks for this ring */ + for (i = 0; i < pring->num_mask; i++) { + mb->un.varCfgRing.rrRegs[i].rval = pring->prt[i].rctl; + if (mb->un.varCfgRing.rrRegs[i].rval != FC_ELS_REQ) + mb->un.varCfgRing.rrRegs[i].rmask = 0xff; + else + mb->un.varCfgRing.rrRegs[i].rmask = 0xfe; + mb->un.varCfgRing.rrRegs[i].tval = pring->prt[i].type; + mb->un.varCfgRing.rrRegs[i].tmask = 0xff; + } + + return; +} + +void +lpfc_config_port(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb) +{ + MAILBOX_t *mb = &pmb->mb; + dma_addr_t pdma_addr; + uint32_t bar_low, bar_high; + size_t offset; + HGP hgp; + void __iomem *to_slim; + + memset(pmb, 0, sizeof(LPFC_MBOXQ_t)); + mb->mbxCommand = MBX_CONFIG_PORT; + mb->mbxOwner = OWN_HOST; + + mb->un.varCfgPort.pcbLen = sizeof(PCB_t); + + offset = (uint8_t *)&phba->slim2p->pcb - (uint8_t *)phba->slim2p; + pdma_addr = phba->slim2p_mapping + offset; + mb->un.varCfgPort.pcbLow = putPaddrLow(pdma_addr); + mb->un.varCfgPort.pcbHigh = putPaddrHigh(pdma_addr); + + /* Now setup pcb */ + phba->slim2p->pcb.type = TYPE_NATIVE_SLI2; + phba->slim2p->pcb.feature = FEATURE_INITIAL_SLI2; + + /* Setup Mailbox pointers */ + phba->slim2p->pcb.mailBoxSize = sizeof(MAILBOX_t); + offset = (uint8_t *)&phba->slim2p->mbx - (uint8_t *)phba->slim2p; + pdma_addr = phba->slim2p_mapping + offset; + phba->slim2p->pcb.mbAddrHigh = putPaddrHigh(pdma_addr); + phba->slim2p->pcb.mbAddrLow = putPaddrLow(pdma_addr); + + /* + * Setup Host Group ring pointer. + * + * For efficiency reasons, the ring get/put pointers can be + * placed in adapter memory (SLIM) rather than in host memory. + * This allows firmware to avoid PCI reads/writes when updating + * and checking pointers. + * + * The firmware recognizes the use of SLIM memory by comparing + * the address of the get/put pointers structure with that of + * the SLIM BAR (BAR0). + * + * Caution: be sure to use the PCI config space value of BAR0/BAR1 + * (the hardware's view of the base address), not the OS's + * value of pci_resource_start() as the OS value may be a cookie + * for ioremap/iomap. + */ + + + pci_read_config_dword(phba->pcidev, PCI_BASE_ADDRESS_0, &bar_low); + pci_read_config_dword(phba->pcidev, PCI_BASE_ADDRESS_1, &bar_high); + + + /* mask off BAR0's flag bits 0 - 3 */ + phba->slim2p->pcb.hgpAddrLow = (bar_low & PCI_BASE_ADDRESS_MEM_MASK) + + (SLIMOFF*sizeof(uint32_t)); + if (bar_low & PCI_BASE_ADDRESS_MEM_TYPE_64) + phba->slim2p->pcb.hgpAddrHigh = bar_high; + else + phba->slim2p->pcb.hgpAddrHigh = 0; + /* write HGP data to SLIM at the required longword offset */ + memset(&hgp, 0, sizeof(HGP)); + to_slim = phba->MBslimaddr + (SLIMOFF*sizeof (uint32_t)); + lpfc_memcpy_to_slim(to_slim, &hgp, sizeof (HGP)); + + /* Setup Port Group ring pointer */ + offset = (uint8_t *)&phba->slim2p->mbx.us.s2.port - + (uint8_t *)phba->slim2p; + pdma_addr = phba->slim2p_mapping + offset; + phba->slim2p->pcb.pgpAddrHigh = putPaddrHigh(pdma_addr); + phba->slim2p->pcb.pgpAddrLow = putPaddrLow(pdma_addr); + + /* Use callback routine to setp rings in the pcb */ + lpfc_config_pcb_setup(phba); + + /* special handling for LC HBAs */ + if (lpfc_is_LC_HBA(phba->pcidev->device)) { + uint32_t hbainit[5]; + + lpfc_hba_init(phba, hbainit); + + memcpy(&mb->un.varCfgPort.hbainit, hbainit, 20); + } + + /* Swap PCB if needed */ + lpfc_sli_pcimem_bcopy(&phba->slim2p->pcb, &phba->slim2p->pcb, + sizeof (PCB_t)); + + lpfc_printf_log(phba, KERN_INFO, LOG_INIT, + "%d:0405 Service Level Interface (SLI) 2 selected\n", + phba->brd_no); +} + +void +lpfc_mbox_put(struct lpfc_hba * phba, LPFC_MBOXQ_t * mbq) +{ + struct lpfc_sli *psli; + + psli = &phba->sli; + + list_add_tail(&mbq->list, &psli->mboxq); + + psli->mboxq_cnt++; + + return; +} + +LPFC_MBOXQ_t * +lpfc_mbox_get(struct lpfc_hba * phba) +{ + LPFC_MBOXQ_t *mbq = NULL; + struct lpfc_sli *psli = &phba->sli; + + list_remove_head((&psli->mboxq), mbq, LPFC_MBOXQ_t, + list); + if (mbq) { + psli->mboxq_cnt--; + } + + return mbq; +} |