/******************************************************************* * This file is part of the Emulex Linux Device Driver for * * Fibre Channel Host Bus Adapters. * * Copyright (C) 2004-2009 Emulex. All rights reserved. * * EMULEX and SLI are trademarks of Emulex. * * www.emulex.com * * Portions Copyright (C) 2004-2005 Christoph Hellwig * * * * This program is free software; you can redistribute it and/or * * modify it under the terms of version 2 of the GNU General * * Public License as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful. * * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * * TO BE LEGALLY INVALID. See the GNU General Public License for * * more details, a copy of which can be found in the file COPYING * * included with this package. * *******************************************************************/ #include #include #include #include #include #include #include "lpfc_hw4.h" #include "lpfc_hw.h" #include "lpfc_sli.h" #include "lpfc_sli4.h" #include "lpfc_nl.h" #include "lpfc_disc.h" #include "lpfc_scsi.h" #include "lpfc.h" #include "lpfc_logmsg.h" #include "lpfc_crtn.h" #include "lpfc_compat.h" /** * lpfc_dump_static_vport - Dump HBA's static vport information. * @phba: pointer to lpfc hba data structure. * @pmb: pointer to the driver internal queue element for mailbox command. * @offset: offset for dumping vport info. * * The dump mailbox command provides a method for the device driver to obtain * various types of information from the HBA device. * * This routine prepares the mailbox command for dumping list of static * vports to be created. **/ void lpfc_dump_static_vport(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb, uint16_t offset) { MAILBOX_t *mb; void *ctx; mb = &pmb->u.mb; ctx = pmb->context2; /* Setup to dump vport info 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_VPORT; 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_dump_mem - Prepare a mailbox command for retrieving HBA's VPD memory * @phba: pointer to lpfc hba data structure. * @pmb: pointer to the driver internal queue element for mailbox command. * @offset: offset for dumping VPD memory mailbox command. * * The dump mailbox command provides a method for the device driver to obtain * various types of information from the HBA device. * * This routine prepares the mailbox command for dumping HBA Vital Product * Data (VPD) memory. This mailbox command is to be used for retrieving a * portion (DMP_RSP_SIZE bytes) of a HBA's VPD from the HBA at an address * offset specified by the offset parameter. **/ void lpfc_dump_mem(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb, uint16_t offset) { MAILBOX_t *mb; void *ctx; mb = &pmb->u.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_dump_wakeup_param - Prepare mailbox command for retrieving wakeup params * @phba: pointer to lpfc hba data structure. * @pmb: pointer to the driver internal queue element for mailbox command. * * This function create a dump memory mailbox command to dump wake up * parameters. */ void lpfc_dump_wakeup_param(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) { MAILBOX_t *mb; void *ctx; mb = &pmb->u.mb; /* Save context so that we can restore after memset */ ctx = pmb->context2; /* Setup to dump VPD region */ memset(pmb, 0, sizeof(LPFC_MBOXQ_t)); mb->mbxCommand = MBX_DUMP_MEMORY; mb->mbxOwner = OWN_HOST; mb->un.varDmp.cv = 1; mb->un.varDmp.type = DMP_NV_PARAMS; mb->un.varDmp.entry_index = 0; mb->un.varDmp.region_id = WAKE_UP_PARMS_REGION_ID; mb->un.varDmp.word_cnt = WAKE_UP_PARMS_WORD_SIZE; mb->un.varDmp.co = 0; mb->un.varDmp.resp_offset = 0; pmb->context2 = ctx; return; } /** * lpfc_read_nv - Prepare a mailbox command for reading HBA's NVRAM param * @phba: pointer to lpfc hba data structure. * @pmb: pointer to the driver internal queue element for mailbox command. * * The read NVRAM mailbox command returns the HBA's non-volatile parameters * that are used as defaults when the Fibre Channel link is brought on-line. * * This routine prepares the mailbox command for reading information stored * in the HBA's NVRAM. Specifically, the HBA's WWNN and WWPN. **/ void lpfc_read_nv(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb) { MAILBOX_t *mb; mb = &pmb->u.mb; memset(pmb, 0, sizeof (LPFC_MBOXQ_t)); mb->mbxCommand = MBX_READ_NV; mb->mbxOwner = OWN_HOST; return; } /** * lpfc_config_async - Prepare a mailbox command for enabling HBA async event * @phba: pointer to lpfc hba data structure. * @pmb: pointer to the driver internal queue element for mailbox command. * @ring: ring number for the asynchronous event to be configured. * * The asynchronous event enable mailbox command is used to enable the * asynchronous event posting via the ASYNC_STATUS_CN IOCB response and * specifies the default ring to which events are posted. * * This routine prepares the mailbox command for enabling HBA asynchronous * event support on a IOCB ring. **/ void lpfc_config_async(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb, uint32_t ring) { MAILBOX_t *mb; mb = &pmb->u.mb; memset(pmb, 0, sizeof (LPFC_MBOXQ_t)); mb->mbxCommand = MBX_ASYNCEVT_ENABLE; mb->un.varCfgAsyncEvent.ring = ring; mb->mbxOwner = OWN_HOST; return; } /** * lpfc_heart_beat - Prepare a mailbox command for heart beat * @phba: pointer to lpfc hba data structure. * @pmb: pointer to the driver internal queue element for mailbox command. * * The heart beat mailbox command is used to detect an unresponsive HBA, which * is defined as any device where no error attention is sent and both mailbox * and rings are not processed. * * This routine prepares the mailbox command for issuing a heart beat in the * form of mailbox command to the HBA. The timely completion of the heart * beat mailbox command indicates the health of the HBA. **/ void lpfc_heart_beat(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb) { MAILBOX_t *mb; mb = &pmb->u.mb; memset(pmb, 0, sizeof (LPFC_MBOXQ_t)); mb->mbxCommand = MBX_HEARTBEAT; mb->mbxOwner = OWN_HOST; return; } /** * lpfc_read_la - Prepare a mailbox command for reading HBA link attention * @phba: pointer to lpfc hba data structure. * @pmb: pointer to the driver internal queue element for mailbox command. * @mp: DMA buffer memory for reading the link attention information into. * * The read link attention mailbox command is issued to read the Link Event * Attention information indicated by the HBA port when the Link Event bit * of the Host Attention (HSTATT) register is set to 1. A Link Event * Attention occurs based on an exception detected at the Fibre Channel link * interface. * * This routine prepares the mailbox command for reading HBA link attention * information. A DMA memory has been set aside and address passed to the * HBA through @mp for the HBA to DMA link attention information into the * memory as part of the execution of the mailbox command. * * Return codes * 0 - Success (currently always return 0) **/ 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->u.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 - Prepare a mailbox command for clearing HBA link attention * @phba: pointer to lpfc hba data structure. * @pmb: pointer to the driver internal queue element for mailbox command. * * The clear link attention mailbox command is issued to clear the link event * attention condition indicated by the Link Event bit of the Host Attention * (HSTATT) register. The link event attention condition is cleared only if * the event tag specified matches that of the current link event counter. * The current event tag is read using the read link attention event mailbox * command. * * This routine prepares the mailbox command for clearing HBA link attention * information. **/ void lpfc_clear_la(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb) { MAILBOX_t *mb; mb = &pmb->u.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 - Prepare a mailbox command for configuring link on a HBA * @phba: pointer to lpfc hba data structure. * @pmb: pointer to the driver internal queue element for mailbox command. * * The configure link mailbox command is used before the initialize link * mailbox command to override default value and to configure link-oriented * parameters such as DID address and various timers. Typically, this * command would be used after an F_Port login to set the returned DID address * and the fabric timeout values. This command is not valid before a configure * port command has configured the HBA port. * * This routine prepares the mailbox command for configuring link on a HBA. **/ void lpfc_config_link(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb) { struct lpfc_vport *vport = phba->pport; MAILBOX_t *mb = &pmb->u.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 = vport->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_config_msi - Prepare a mailbox command for configuring msi-x * @phba: pointer to lpfc hba data structure. * @pmb: pointer to the driver internal queue element for mailbox command. * * The configure MSI-X mailbox command is used to configure the HBA's SLI-3 * MSI-X multi-message interrupt vector association to interrupt attention * conditions. * * Return codes * 0 - Success * -EINVAL - Failure **/ int lpfc_config_msi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) { MAILBOX_t *mb = &pmb->u.mb; uint32_t attentionConditions[2]; /* Sanity check */ if (phba->cfg_use_msi != 2) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0475 Not configured for supporting MSI-X " "cfg_use_msi: 0x%x\n", phba->cfg_use_msi); return -EINVAL; } if (phba->sli_rev < 3) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0476 HBA not supporting SLI-3 or later " "SLI Revision: 0x%x\n", phba->sli_rev); return -EINVAL; } /* Clear mailbox command fields */ memset(pmb, 0, sizeof(LPFC_MBOXQ_t)); /* * SLI-3, Message Signaled Interrupt Fearure. */ /* Multi-message attention configuration */ attentionConditions[0] = (HA_R0ATT | HA_R1ATT | HA_R2ATT | HA_ERATT | HA_LATT | HA_MBATT); attentionConditions[1] = 0; mb->un.varCfgMSI.attentionConditions[0] = attentionConditions[0]; mb->un.varCfgMSI.attentionConditions[1] = attentionConditions[1]; /* * Set up message number to HA bit association */ #ifdef __BIG_ENDIAN_BITFIELD /* RA0 (FCP Ring) */ mb->un.varCfgMSI.messageNumberByHA[HA_R0_POS] = 1; /* RA1 (Other Protocol Extra Ring) */ mb->un.varCfgMSI.messageNumberByHA[HA_R1_POS] = 1; #else /* __LITTLE_ENDIAN_BITFIELD */ /* RA0 (FCP Ring) */ mb->un.varCfgMSI.messageNumberByHA[HA_R0_POS^3] = 1; /* RA1 (Other Protocol Extra Ring) */ mb->un.varCfgMSI.messageNumberByHA[HA_R1_POS^3] = 1; #endif /* Multi-message interrupt autoclear configuration*/ mb->un.varCfgMSI.autoClearHA[0] = attentionConditions[0]; mb->un.varCfgMSI.autoClearHA[1] = attentionConditions[1]; /* For now, HBA autoclear does not work reliably, disable it */ mb->un.varCfgMSI.autoClearHA[0] = 0; mb->un.varCfgMSI.autoClearHA[1] = 0; /* Set command and owner bit */ mb->mbxCommand = MBX_CONFIG_MSI; mb->mbxOwner = OWN_HOST; return 0; } /** * lpfc_init_link - Prepare a mailbox command for initialize link on a HBA * @phba: pointer to lpfc hba data structure. * @pmb: pointer to the driver internal queue element for mailbox command. * @topology: the link topology for the link to be initialized to. * @linkspeed: the link speed for the link to be initialized to. * * The initialize link mailbox command is used to initialize the Fibre * Channel link. This command must follow a configure port command that * establishes the mode of operation. * * This routine prepares the mailbox command for initializing link on a HBA * with the specified link topology and speed. **/ 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->u.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; case FLAGS_LOCAL_LB: mb->un.varInitLnk.link_flags = FLAGS_LOCAL_LB; break; } /* Enable asynchronous ABTS responses from firmware */ mb->un.varInitLnk.link_flags |= FLAGS_IMED_ABORT; /* 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: case LINK_SPEED_8G: 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 - Prepare a mailbox command for reading HBA parameters * @phba: pointer to lpfc hba data structure. * @pmb: pointer to the driver internal queue element for mailbox command. * @vpi: virtual N_Port identifier. * * The read service parameter mailbox command is used to read the HBA port * service parameters. The service parameters are read into the buffer * specified directly by a BDE in the mailbox command. These service * parameters may then be used to build the payload of an N_Port/F_POrt * login request and reply (LOGI/ACC). * * This routine prepares the mailbox command for reading HBA port service * parameters. The DMA memory is allocated in this function and the addresses * are populated into the mailbox command for the HBA to DMA the service * parameters into. * * Return codes * 0 - Success * 1 - DMA memory allocation failed **/ int lpfc_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb, int vpi) { struct lpfc_dmabuf *mp; MAILBOX_t *mb; struct lpfc_sli *psli; psli = &phba->sli; mb = &pmb->u.mb; memset(pmb, 0, sizeof (LPFC_MBOXQ_t)); mb->mbxOwner = OWN_HOST; /* Get a buffer to hold the HBAs Service Parameters */ mp = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL); if (mp) mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys); if (!mp || !mp->virt) { kfree(mp); mb->mbxCommand = MBX_READ_SPARM64; /* READ_SPARAM: no buffers */ lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX, "0301 READ_SPARAM: no buffers\n"); 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); mb->un.varRdSparm.vpi = vpi + phba->vpi_base; /* save address for completion */ pmb->context1 = mp; return (0); } /** * lpfc_unreg_did - Prepare a mailbox command for unregistering DID * @phba: pointer to lpfc hba data structure. * @vpi: virtual N_Port identifier. * @did: remote port identifier. * @pmb: pointer to the driver internal queue element for mailbox command. * * The unregister DID mailbox command is used to unregister an N_Port/F_Port * login for an unknown RPI by specifying the DID of a remote port. This * command frees an RPI context in the HBA port. This has the effect of * performing an implicit N_Port/F_Port logout. * * This routine prepares the mailbox command for unregistering a remote * N_Port/F_Port (DID) login. **/ void lpfc_unreg_did(struct lpfc_hba * phba, uint16_t vpi, uint32_t did, LPFC_MBOXQ_t * pmb) { MAILBOX_t *mb; mb = &pmb->u.mb; memset(pmb, 0, sizeof (LPFC_MBOXQ_t)); mb->un.varUnregDID.did = did; if (vpi != 0xffff) vpi += phba->vpi_base; mb->un.varUnregDID.vpi = vpi; mb->mbxCommand = MBX_UNREG_D_ID; mb->mbxOwner = OWN_HOST; return; } /** * lpfc_read_config - Prepare a mailbox command for reading HBA configuration * @phba: pointer to lpfc hba data structure. * @pmb: pointer to the driver internal queue element for mailbox command. * * The read configuration mailbox command is used to read the HBA port * configuration parameters. This mailbox command provides a method for * seeing any parameters that may have changed via various configuration * mailbox commands. * * This routine prepares the mailbox command for reading out HBA configuration * parameters. **/ void lpfc_read_config(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb) { MAILBOX_t *mb; mb = &pmb->u.mb; memset(pmb, 0, sizeof (LPFC_MBOXQ_t)); mb->mbxCommand = MBX_READ_CONFIG; mb->mbxOwner = OWN_HOST; return; } /** * lpfc_read_lnk_stat - Prepare a mailbox command for reading HBA link stats * @phba: pointer to lpfc hba data structure. * @pmb: pointer to the driver internal queue element for mailbox command. * * The read link status mailbox command is used to read the link status from * the HBA. Link status includes all link-related error counters. These * counters are maintained by the HBA and originated in the link hardware * unit. Note that all of these counters wrap. * * This routine prepares the mailbox command for reading out HBA link status. **/ void lpfc_read_lnk_stat(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb) { MAILBOX_t *mb; mb = &pmb->u.mb; memset(pmb, 0, sizeof (LPFC_MBOXQ_t)); mb->mbxCommand = MBX_READ_LNK_STAT; mb->mbxOwner = OWN_HOST; return; } /** * lpfc_reg_rpi - Prepare a mailbox command for registering remote login * @phba: pointer to lpfc hba data structure. * @vpi: virtual N_Port identifier. * @did: remote port identifier. * @param: pointer to memory holding the server parameters. * @pmb: pointer to the driver internal queue element for mailbox command. * @flag: action flag to be passed back for the complete function. * * The registration login mailbox command is used to register an N_Port or * F_Port login. This registration allows the HBA to cache the remote N_Port * service parameters internally and thereby make the appropriate FC-2 * decisions. The remote port service parameters are handed off by the driver * to the HBA using a descriptor entry that directly identifies a buffer in * host memory. In exchange, the HBA returns an RPI identifier. * * This routine prepares the mailbox command for registering remote port login. * The function allocates DMA buffer for passing the service parameters to the * HBA with the mailbox command. * * Return codes * 0 - Success * 1 - DMA memory allocation failed **/ int lpfc_reg_rpi(struct lpfc_hba *phba, uint16_t vpi, uint32_t did, uint8_t *param, LPFC_MBOXQ_t *pmb, uint32_t flag) { MAILBOX_t *mb = &pmb->u.mb; uint8_t *sparam; struct lpfc_dmabuf *mp; memset(pmb, 0, sizeof (LPFC_MBOXQ_t)); mb->un.varRegLogin.rpi = 0; if (phba->sli_rev == LPFC_SLI_REV4) { mb->un.varRegLogin.rpi = lpfc_sli4_alloc_rpi(phba); if (mb->un.varRegLogin.rpi == LPFC_RPI_ALLOC_ERROR) return 1; } mb->un.varRegLogin.vpi = vpi + phba->vpi_base; 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 */ mp = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL); if (mp) mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys); if (!mp || !mp->virt) { kfree(mp); mb->mbxCommand = MBX_REG_LOGIN64; /* REG_LOGIN: no buffers */ lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX, "0302 REG_LOGIN: no buffers, VPI:%d DID:x%x, " "flag x%x\n", vpi, did, 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 - Prepare a mailbox command for unregistering remote login * @phba: pointer to lpfc hba data structure. * @vpi: virtual N_Port identifier. * @rpi: remote port identifier * @pmb: pointer to the driver internal queue element for mailbox command. * * The unregistration login mailbox command is used to unregister an N_Port * or F_Port login. This command frees an RPI context in the HBA. It has the * effect of performing an implicit N_Port/F_Port logout. * * This routine prepares the mailbox command for unregistering remote port * login. **/ void lpfc_unreg_login(struct lpfc_hba *phba, uint16_t vpi, uint32_t rpi, LPFC_MBOXQ_t * pmb) { MAILBOX_t *mb; mb = &pmb->u.mb; memset(pmb, 0, sizeof (LPFC_MBOXQ_t)); mb->un.varUnregLogin.rpi = (uint16_t) rpi; mb->un.varUnregLogin.rsvd1 = 0; mb->un.varUnregLogin.vpi = vpi + phba->vpi_base; mb->mbxCommand = MBX_UNREG_LOGIN; mb->mbxOwner = OWN_HOST; return; } /** * lpfc_reg_vpi - Prepare a mailbox command for registering vport identifier * @phba: pointer to lpfc hba data structure. * @vpi: virtual N_Port identifier. * @sid: Fibre Channel S_ID (N_Port_ID assigned to a virtual N_Port). * @pmb: pointer to the driver internal queue element for mailbox command. * * The registration vport identifier mailbox command is used to activate a * virtual N_Port after it has acquired an N_Port_ID. The HBA validates the * N_Port_ID against the information in the selected virtual N_Port context * block and marks it active to allow normal processing of IOCB commands and * received unsolicited exchanges. * * This routine prepares the mailbox command for registering a virtual N_Port. **/ void lpfc_reg_vpi(struct lpfc_vport *vport, LPFC_MBOXQ_t *pmb) { MAILBOX_t *mb = &pmb->u.mb; memset(pmb, 0, sizeof (LPFC_MBOXQ_t)); mb->un.varRegVpi.vpi = vport->vpi + vport->phba->vpi_base; mb->un.varRegVpi.sid = vport->fc_myDID; mb->un.varRegVpi.vfi = vport->vfi + vport->phba->vfi_base; mb->mbxCommand = MBX_REG_VPI; mb->mbxOwner = OWN_HOST; return; } /** * lpfc_unreg_vpi - Prepare a mailbox command for unregistering vport id * @phba: pointer to lpfc hba data structure. * @vpi: virtual N_Port identifier. * @pmb: pointer to the driver internal queue element for mailbox command. * * The unregistration vport identifier mailbox command is used to inactivate * a virtual N_Port. The driver must have logged out and unregistered all * remote N_Ports to abort any activity on the virtual N_Port. The HBA will * unregisters any default RPIs associated with the specified vpi, aborting * any active exchanges. The HBA will post the mailbox response after making * the virtual N_Port inactive. * * This routine prepares the mailbox command for unregistering a virtual * N_Port. **/ void lpfc_unreg_vpi(struct lpfc_hba *phba, uint16_t vpi, LPFC_MBOXQ_t *pmb) { MAILBOX_t *mb = &pmb->u.mb; memset(pmb, 0, sizeof (LPFC_MBOXQ_t)); mb->un.varUnregVpi.vpi = vpi + phba->vpi_base; mb->mbxCommand = MBX_UNREG_VPI; mb->mbxOwner = OWN_HOST; return; } /** * lpfc_config_pcb_setup - Set up IOCB rings in the Port Control Block (PCB) * @phba: pointer to lpfc hba data structure. * * This routine sets up and initializes the IOCB rings in the Port Control * Block (PCB). **/ 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->pcb; dma_addr_t pdma_addr; uint32_t offset; uint32_t iocbCnt = 0; int i; pcbp->maxRing = (psli->num_rings - 1); for (i = 0; i < psli->num_rings; i++) { pring = &psli->ring[i]; pring->sizeCiocb = phba->sli_rev == 3 ? SLI3_IOCB_CMD_SIZE: SLI2_IOCB_CMD_SIZE; pring->sizeRiocb = phba->sli_rev == 3 ? SLI3_IOCB_RSP_SIZE: SLI2_IOCB_RSP_SIZE; /* 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->IOCBs[iocbCnt]; pcbp->rdsc[i].cmdEntries = pring->numCiocb; offset = (uint8_t *) &phba->IOCBs[iocbCnt] - (uint8_t *) phba->slim2p.virt; pdma_addr = phba->slim2p.phys + 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->IOCBs[iocbCnt]; pcbp->rdsc[i].rspEntries = pring->numRiocb; offset = (uint8_t *)&phba->IOCBs[iocbCnt] - (uint8_t *)phba->slim2p.virt; pdma_addr = phba->slim2p.phys + offset; pcbp->rdsc[i].rspAddrHigh = putPaddrHigh(pdma_addr); pcbp->rdsc[i].rspAddrLow = putPaddrLow(pdma_addr); iocbCnt += pring->numRiocb; } } /** * lpfc_read_rev - Prepare a mailbox command for reading HBA revision * @phba: pointer to lpfc hba data structure. * @pmb: pointer to the driver internal queue element for mailbox command. * * The read revision mailbox command is used to read the revision levels of * the HBA components. These components include hardware units, resident * firmware, and available firmware. HBAs that supports SLI-3 mode of * operation provide different response information depending on the version * requested by the driver. * * This routine prepares the mailbox command for reading HBA revision * information. **/ void lpfc_read_rev(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb) { MAILBOX_t *mb = &pmb->u.mb; memset(pmb, 0, sizeof (LPFC_MBOXQ_t)); mb->un.varRdRev.cv = 1; mb->un.varRdRev.v3req = 1; /* Request SLI3 info */ mb->mbxCommand = MBX_READ_REV; mb->mbxOwner = OWN_HOST; return; } /** * lpfc_build_hbq_profile2 - Set up the HBQ Selection Profile 2 * @hbqmb: pointer to the HBQ configuration data structure in mailbox command. * @hbq_desc: pointer to the HBQ selection profile descriptor. * * The Host Buffer Queue (HBQ) Selection Profile 2 specifies that the HBA * tests the incoming frames' R_CTL/TYPE fields with works 10:15 and performs * the Sequence Length Test using the fields in the Selection Profile 2 * extension in words 20:31. **/ static void lpfc_build_hbq_profile2(struct config_hbq_var *hbqmb, struct lpfc_hbq_init *hbq_desc) { hbqmb->profiles.profile2.seqlenbcnt = hbq_desc->seqlenbcnt; hbqmb->profiles.profile2.maxlen = hbq_desc->maxlen; hbqmb->profiles.profile2.seqlenoff = hbq_desc->seqlenoff; } /** * lpfc_build_hbq_profile3 - Set up the HBQ Selection Profile 3 * @hbqmb: pointer to the HBQ configuration data structure in mailbox command. * @hbq_desc: pointer to the HBQ selection profile descriptor. * * The Host Buffer Queue (HBQ) Selection Profile 3 specifies that the HBA * tests the incoming frame's R_CTL/TYPE fields with words 10:15 and performs * the Sequence Length Test and Byte Field Test using the fields in the * Selection Profile 3 extension in words 20:31. **/ static void lpfc_build_hbq_profile3(struct config_hbq_var *hbqmb, struct lpfc_hbq_init *hbq_desc) { hbqmb->profiles.profile3.seqlenbcnt = hbq_desc->seqlenbcnt; hbqmb->profiles.profile3.maxlen = hbq_desc->maxlen; hbqmb->profiles.profile3.cmdcodeoff = hbq_desc->cmdcodeoff; hbqmb->profiles.profile3.seqlenoff = hbq_desc->seqlenoff; memcpy(&hbqmb->profiles.profile3.cmdmatch, hbq_desc->cmdmatch, sizeof(hbqmb->profiles.profile3.cmdmatch)); } /** * lpfc_build_hbq_profile5 - Set up the HBQ Selection Profile 5 * @hbqmb: pointer to the HBQ configuration data structure in mailbox command. * @hbq_desc: pointer to the HBQ selection profile descriptor. * * The Host Buffer Queue (HBQ) Selection Profile 5 specifies a header HBQ. The * HBA tests the initial frame of an incoming sequence using the frame's * R_CTL/TYPE fields with words 10:15 and performs the Sequence Length Test * and Byte Field Test using the fields in the Selection Profile 5 extension * words 20:31. **/ static void lpfc_build_hbq_profile5(struct config_hbq_var *hbqmb, struct lpfc_hbq_init *hbq_desc) { hbqmb->profiles.profile5.seqlenbcnt = hbq_desc->seqlenbcnt; hbqmb->profiles.profile5.maxlen = hbq_desc->maxlen; hbqmb->profiles.profile5.cmdcodeoff = hbq_desc->cmdcodeoff; hbqmb->profiles.profile5.seqlenoff = hbq_desc->seqlenoff; memcpy(&hbqmb->profiles.profile5.cmdmatch, hbq_desc->cmdmatch, sizeof(hbqmb->profiles.profile5.cmdmatch)); } /** * lpfc_config_hbq - Prepare a mailbox command for configuring an HBQ * @phba: pointer to lpfc hba data structure. * @id: HBQ identifier. * @hbq_desc: pointer to the HBA descriptor data structure. * @hbq_entry_index: index of the HBQ entry data structures. * @pmb: pointer to the driver internal queue element for mailbox command. * * The configure HBQ (Host Buffer Queue) mailbox command is used to configure * an HBQ. The configuration binds events that require buffers to a particular * ring and HBQ based on a selection profile. * * This routine prepares the mailbox command for configuring an HBQ. **/ void lpfc_config_hbq(struct lpfc_hba *phba, uint32_t id, struct lpfc_hbq_init *hbq_desc, uint32_t hbq_entry_index, LPFC_MBOXQ_t *pmb) { int i; MAILBOX_t *mb = &pmb->u.mb; struct config_hbq_var *hbqmb = &mb->un.varCfgHbq; memset(pmb, 0, sizeof (LPFC_MBOXQ_t)); hbqmb->hbqId = id; hbqmb->entry_count = hbq_desc->entry_count; /* # entries in HBQ */ hbqmb->recvNotify = hbq_desc->rn; /* Receive * Notification */ hbqmb->numMask = hbq_desc->mask_count; /* # R_CTL/TYPE masks * # in words 0-19 */ hbqmb->profile = hbq_desc->profile; /* Selection profile: * 0 = all, * 7 = logentry */ hbqmb->ringMask = hbq_desc->ring_mask; /* Binds HBQ to a ring * e.g. Ring0=b0001, * ring2=b0100 */ hbqmb->headerLen = hbq_desc->headerLen; /* 0 if not profile 4 * or 5 */ hbqmb->logEntry = hbq_desc->logEntry; /* Set to 1 if this * HBQ will be used * for LogEntry * buffers */ hbqmb->hbqaddrLow = putPaddrLow(phba->hbqslimp.phys) + hbq_entry_index * sizeof(struct lpfc_hbq_entry); hbqmb->hbqaddrHigh = putPaddrHigh(phba->hbqslimp.phys); mb->mbxCommand = MBX_CONFIG_HBQ; mb->mbxOwner = OWN_HOST; /* Copy info for profiles 2,3,5. Other * profiles this area is reserved */ if (hbq_desc->profile == 2) lpfc_build_hbq_profile2(hbqmb, hbq_desc); else if (hbq_desc->profile == 3) lpfc_build_hbq_profile3(hbqmb, hbq_desc); else if (hbq_desc->profile == 5) lpfc_build_hbq_profile5(hbqmb, hbq_desc); /* Return if no rctl / type masks for this HBQ */ if (!hbq_desc->mask_count) return; /* Otherwise we setup specific rctl / type masks for this HBQ */ for (i = 0; i < hbq_desc->mask_count; i++) { hbqmb->hbqMasks[i].tmatch = hbq_desc->hbqMasks[i].tmatch; hbqmb->hbqMasks[i].tmask = hbq_desc->hbqMasks[i].tmask; hbqmb->hbqMasks[i].rctlmatch = hbq_desc->hbqMasks[i].rctlmatch; hbqmb->hbqMasks[i].rctlmask = hbq_desc->hbqMasks[i].rctlmask; } return; } /** * lpfc_config_ring - Prepare a mailbox command for configuring an IOCB ring * @phba: pointer to lpfc hba data structure. * @ring: * @pmb: pointer to the driver internal queue element for mailbox command. * * The configure ring mailbox command is used to configure an IOCB ring. This * configuration binds from one to six of HBA RC_CTL/TYPE mask entries to the * ring. This is used to map incoming sequences to a particular ring whose * RC_CTL/TYPE mask entry matches that of the sequence. The driver should not * attempt to configure a ring whose number is greater than the number * specified in the Port Control Block (PCB). It is an error to issue the * configure ring command more than once with the same ring number. The HBA * returns an error if the driver attempts this. * * This routine prepares the mailbox command for configuring IOCB ring. **/ void lpfc_config_ring(struct lpfc_hba * phba, int ring, LPFC_MBOXQ_t * pmb) { int i; MAILBOX_t *mb = &pmb->u.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; } /** * lpfc_config_port - Prepare a mailbox command for configuring port * @phba: pointer to lpfc hba data structure. * @pmb: pointer to the driver internal queue element for mailbox command. * * The configure port mailbox command is used to identify the Port Control * Block (PCB) in the driver memory. After this command is issued, the * driver must not access the mailbox in the HBA without first resetting * the HBA. The HBA may copy the PCB information to internal storage for * subsequent use; the driver can not change the PCB information unless it * resets the HBA. * * This routine prepares the mailbox command for configuring port. **/ void lpfc_config_port(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) { MAILBOX_t __iomem *mb_slim = (MAILBOX_t __iomem *) phba->MBslimaddr; MAILBOX_t *mb = &pmb->u.mb; dma_addr_t pdma_addr; uint32_t bar_low, bar_high; size_t offset; struct lpfc_hgp hgp; int i; uint32_t pgp_offset; 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->pcb - (uint8_t *)phba->slim2p.virt; pdma_addr = phba->slim2p.phys + offset; mb->un.varCfgPort.pcbLow = putPaddrLow(pdma_addr); mb->un.varCfgPort.pcbHigh = putPaddrHigh(pdma_addr); /* Always Host Group Pointer is in SLIM */ mb->un.varCfgPort.hps = 1; /* If HBA supports SLI=3 ask for it */ if (phba->sli_rev == LPFC_SLI_REV3 && phba->vpd.sli3Feat.cerbm) { if (phba->cfg_enable_bg) mb->un.varCfgPort.cbg = 1; /* configure BlockGuard */ mb->un.varCfgPort.cdss = 1; /* Configure Security */ mb->un.varCfgPort.cerbm = 1; /* Request HBQs */ mb->un.varCfgPort.ccrp = 1; /* Command Ring Polling */ mb->un.varCfgPort.cinb = 1; /* Interrupt Notification Block */ mb->un.varCfgPort.max_hbq = lpfc_sli_hbq_count(); if (phba->max_vpi && phba->cfg_enable_npiv && phba->vpd.sli3Feat.cmv) { mb->un.varCfgPort.max_vpi = LPFC_MAX_VPI; mb->un.varCfgPort.cmv = 1; } else mb->un.varCfgPort.max_vpi = phba->max_vpi = 0; } else phba->sli_rev = LPFC_SLI_REV2; mb->un.varCfgPort.sli_mode = phba->sli_rev; /* Now setup pcb */ phba->pcb->type = TYPE_NATIVE_SLI2; phba->pcb->feature = FEATURE_INITIAL_SLI2; /* Setup Mailbox pointers */ phba->pcb->mailBoxSize = sizeof(MAILBOX_t); offset = (uint8_t *)phba->mbox - (uint8_t *)phba->slim2p.virt; pdma_addr = phba->slim2p.phys + offset; phba->pcb->mbAddrHigh = putPaddrHigh(pdma_addr); phba->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); /* * Set up HGP - Port Memory * * The port expects the host get/put pointers to reside in memory * following the "non-diagnostic" mode mailbox (32 words, 0x80 bytes) * area of SLIM. In SLI-2 mode, there's an additional 16 reserved * words (0x40 bytes). This area is not reserved if HBQs are * configured in SLI-3. * * CR0Put - SLI2(no HBQs) = 0xc0, With HBQs = 0x80 * RR0Get 0xc4 0x84 * CR1Put 0xc8 0x88 * RR1Get 0xcc 0x8c * CR2Put 0xd0 0x90 * RR2Get 0xd4 0x94 * CR3Put 0xd8 0x98 * RR3Get 0xdc 0x9c * * Reserved 0xa0-0xbf * If HBQs configured: * HBQ 0 Put ptr 0xc0 * HBQ 1 Put ptr 0xc4 * HBQ 2 Put ptr 0xc8 * ...... * HBQ(M-1)Put Pointer 0xc0+(M-1)*4 * */ if (phba->sli_rev == 3) { phba->host_gp = &mb_slim->us.s3.host[0]; phba->hbq_put = &mb_slim->us.s3.hbq_put[0]; } else { phba->host_gp = &mb_slim->us.s2.host[0]; phba->hbq_put = NULL; } /* mask off BAR0's flag bits 0 - 3 */ phba->pcb->hgpAddrLow = (bar_low & PCI_BASE_ADDRESS_MEM_MASK) + (void __iomem *)phba->host_gp - (void __iomem *)phba->MBslimaddr; if (bar_low & PCI_BASE_ADDRESS_MEM_TYPE_64) phba->pcb->hgpAddrHigh = bar_high; else phba->pcb->hgpAddrHigh = 0; /* write HGP data to SLIM at the required longword offset */ memset(&hgp, 0, sizeof(struct lpfc_hgp)); for (i=0; i < phba->sli.num_rings; i++) { lpfc_memcpy_to_slim(phba->host_gp + i, &hgp, sizeof(*phba->host_gp)); } /* Setup Port Group offset */ if (phba->sli_rev == 3) pgp_offset = offsetof(struct lpfc_sli2_slim, mbx.us.s3_pgp.port); else pgp_offset = offsetof(struct lpfc_sli2_slim, mbx.us.s2.port); pdma_addr = phba->slim2p.phys + pgp_offset; phba->pcb->pgpAddrHigh = putPaddrHigh(pdma_addr); phba->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->pcb, phba->pcb, sizeof(PCB_t)); } /** * lpfc_kill_board - Prepare a mailbox command for killing board * @phba: pointer to lpfc hba data structure. * @pmb: pointer to the driver internal queue element for mailbox command. * * The kill board mailbox command is used to tell firmware to perform a * graceful shutdown of a channel on a specified board to prepare for reset. * When the kill board mailbox command is received, the ER3 bit is set to 1 * in the Host Status register and the ER Attention bit is set to 1 in the * Host Attention register of the HBA function that received the kill board * command. * * This routine prepares the mailbox command for killing the board in * preparation for a graceful shutdown. **/ void lpfc_kill_board(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb) { MAILBOX_t *mb = &pmb->u.mb; memset(pmb, 0, sizeof(LPFC_MBOXQ_t)); mb->mbxCommand = MBX_KILL_BOARD; mb->mbxOwner = OWN_HOST; return; } /** * lpfc_mbox_put - Put a mailbox cmd into the tail of driver's mailbox queue * @phba: pointer to lpfc hba data structure. * @mbq: pointer to the driver internal queue element for mailbox command. * * Driver maintains a internal mailbox command queue implemented as a linked * list. When a mailbox command is issued, it shall be put into the mailbox * command queue such that they shall be processed orderly as HBA can process * one mailbox command at a time. **/ 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_mbox_get - Remove a mailbox cmd from the head of driver's mailbox queue * @phba: pointer to lpfc hba data structure. * * Driver maintains a internal mailbox command queue implemented as a linked * list. When a mailbox command is issued, it shall be put into the mailbox * command queue such that they shall be processed orderly as HBA can process * one mailbox command at a time. After HBA finished processing a mailbox * command, the driver will remove a pending mailbox command from the head of * the mailbox command queue and send to the HBA for processing. * * Return codes * pointer to the driver internal queue element for mailbox command. **/ 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; } /** * __lpfc_mbox_cmpl_put - Put mailbox cmd into mailbox cmd complete list * @phba: pointer to lpfc hba data structure. * @mbq: pointer to the driver internal queue element for mailbox command. * * This routine put the completed mailbox command into the mailbox command * complete list. This is the unlocked version of the routine. The mailbox * complete list is used by the driver worker thread to process mailbox * complete callback functions outside the driver interrupt handler. **/ void __lpfc_mbox_cmpl_put(struct lpfc_hba *phba, LPFC_MBOXQ_t *mbq) { list_add_tail(&mbq->list, &phba->sli.mboxq_cmpl); } /** * lpfc_mbox_cmpl_put - Put mailbox command into mailbox command complete list * @phba: pointer to lpfc hba data structure. * @mbq: pointer to the driver internal queue element for mailbox command. * * This routine put the completed mailbox command into the mailbox command * complete list. This is the locked version of the routine. The mailbox * complete list is used by the driver worker thread to process mailbox * complete callback functions outside the driver interrupt handler. **/ void lpfc_mbox_cmpl_put(struct lpfc_hba *phba, LPFC_MBOXQ_t *mbq) { unsigned long iflag; /* This function expects to be called from interrupt context */ spin_lock_irqsave(&phba->hbalock, iflag); __lpfc_mbox_cmpl_put(phba, mbq); spin_unlock_irqrestore(&phba->hbalock, iflag); return; } /** * lpfc_mbox_cmd_check - Check the validality of a mailbox command * @phba: pointer to lpfc hba data structure. * @mboxq: pointer to the driver internal queue element for mailbox command. * * This routine is to check whether a mailbox command is valid to be issued. * This check will be performed by both the mailbox issue API when a client * is to issue a mailbox command to the mailbox transport. * * Return 0 - pass the check, -ENODEV - fail the check **/ int lpfc_mbox_cmd_check(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) { /* Mailbox command that have a completion handler must also have a * vport specified. */ if (mboxq->mbox_cmpl && mboxq->mbox_cmpl != lpfc_sli_def_mbox_cmpl && mboxq->mbox_cmpl != lpfc_sli_wake_mbox_wait) { if (!mboxq->vport) { lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_VPORT, "1814 Mbox x%x failed, no vport\n", mboxq->u.mb.mbxCommand); dump_stack(); return -ENODEV; } } return 0; } /** * lpfc_mbox_dev_check - Check the device state for issuing a mailbox command * @phba: pointer to lpfc hba data structure. * * This routine is to check whether the HBA device is ready for posting a * mailbox command. It is used by the mailbox transport API at the time the * to post a mailbox command to the device. * * Return 0 - pass the check, -ENODEV - fail the check **/ int lpfc_mbox_dev_check(struct lpfc_hba *phba) { /* If the PCI channel is in offline state, do not issue mbox */ if (unlikely(pci_channel_offline(phba->pcidev))) return -ENODEV; /* If the HBA is in error state, do not issue mbox */ if (phba->link_state == LPFC_HBA_ERROR) return -ENODEV; return 0; } /** * lpfc_mbox_tmo_val - Retrieve mailbox command timeout value * @phba: pointer to lpfc hba data structure. * @cmd: mailbox command code. * * This routine retrieves the proper timeout value according to the mailbox * command code. * * Return codes * Timeout value to be used for the given mailbox command **/ int lpfc_mbox_tmo_val(struct lpfc_hba *phba, int cmd) { switch (cmd) { case MBX_WRITE_NV: /* 0x03 */ case MBX_UPDATE_CFG: /* 0x1B */ case MBX_DOWN_LOAD: /* 0x1C */ case MBX_DEL_LD_ENTRY: /* 0x1D */ case MBX_LOAD_AREA: /* 0x81 */ case MBX_WRITE_WWN: /* 0x98 */ case MBX_LOAD_EXP_ROM: /* 0x9C */ return LPFC_MBOX_TMO_FLASH_CMD; case MBX_SLI4_CONFIG: /* 0x9b */ return LPFC_MBOX_SLI4_CONFIG_TMO; } return LPFC_MBOX_TMO; } /** * lpfc_sli4_mbx_sge_set - Set a sge entry in non-embedded mailbox command * @mbox: pointer to lpfc mbox command. * @sgentry: sge entry index. * @phyaddr: physical address for the sge * @length: Length of the sge. * * This routine sets up an entry in the non-embedded mailbox command at the sge * index location. **/ void lpfc_sli4_mbx_sge_set(struct lpfcMboxq *mbox, uint32_t sgentry, dma_addr_t phyaddr, uint32_t length) { struct lpfc_mbx_nembed_cmd *nembed_sge; nembed_sge = (struct lpfc_mbx_nembed_cmd *) &mbox->u.mqe.un.nembed_cmd; nembed_sge->sge[sgentry].pa_lo = putPaddrLow(phyaddr); nembed_sge->sge[sgentry].pa_hi = putPaddrHigh(phyaddr); nembed_sge->sge[sgentry].length = length; } /** * lpfc_sli4_mbx_sge_get - Get a sge entry from non-embedded mailbox command * @mbox: pointer to lpfc mbox command. * @sgentry: sge entry index. * * This routine gets an entry from the non-embedded mailbox command at the sge * index location. **/ void lpfc_sli4_mbx_sge_get(struct lpfcMboxq *mbox, uint32_t sgentry, struct lpfc_mbx_sge *sge) { struct lpfc_mbx_nembed_cmd *nembed_sge; nembed_sge = (struct lpfc_mbx_nembed_cmd *) &mbox->u.mqe.un.nembed_cmd; sge->pa_lo = nembed_sge->sge[sgentry].pa_lo; sge->pa_hi = nembed_sge->sge[sgentry].pa_hi; sge->length = nembed_sge->sge[sgentry].length; } /** * lpfc_sli4_mbox_cmd_free - Free a sli4 mailbox command * @phba: pointer to lpfc hba data structure. * @mbox: pointer to lpfc mbox command. * * This routine frees SLI4 specific mailbox command for sending IOCTL command. **/ void lpfc_sli4_mbox_cmd_free(struct lpfc_hba *phba, struct lpfcMboxq *mbox) { struct lpfc_mbx_sli4_config *sli4_cfg; struct lpfc_mbx_sge sge; dma_addr_t phyaddr; uint32_t sgecount, sgentry; sli4_cfg = &mbox->u.mqe.un.sli4_config; /* For embedded mbox command, just free the mbox command */ if (bf_get(lpfc_mbox_hdr_emb, &sli4_cfg->header.cfg_mhdr)) { mempool_free(mbox, phba->mbox_mem_pool); return; } /* For non-embedded mbox command, we need to free the pages first */ sgecount = bf_get(lpfc_mbox_hdr_sge_cnt, &sli4_cfg->header.cfg_mhdr); /* There is nothing we can do if there is no sge address array */ if (unlikely(!mbox->sge_array)) { mempool_free(mbox, phba->mbox_mem_pool); return; } /* Each non-embedded DMA memory was allocated in the length of a page */ for (sgentry = 0; sgentry < sgecount; sgentry++) { lpfc_sli4_mbx_sge_get(mbox, sgentry, &sge); phyaddr = getPaddr(sge.pa_hi, sge.pa_lo); dma_free_coherent(&phba->pcidev->dev, PAGE_SIZE, mbox->sge_array->addr[sgentry], phyaddr); } /* Free the sge address array memory */ kfree(mbox->sge_array); /* Finally, free the mailbox command itself */ mempool_free(mbox, phba->mbox_mem_pool); } /** * lpfc_sli4_config - Initialize the SLI4 Config Mailbox command * @phba: pointer to lpfc hba data structure. * @mbox: pointer to lpfc mbox command. * @subsystem: The sli4 config sub mailbox subsystem. * @opcode: The sli4 config sub mailbox command opcode. * @length: Length of the sli4 config mailbox command. * * This routine sets up the header fields of SLI4 specific mailbox command * for sending IOCTL command. * * Return: the actual length of the mbox command allocated (mostly useful * for none embedded mailbox command). **/ int lpfc_sli4_config(struct lpfc_hba *phba, struct lpfcMboxq *mbox, uint8_t subsystem, uint8_t opcode, uint32_t length, bool emb) { struct lpfc_mbx_sli4_config *sli4_config; union lpfc_sli4_cfg_shdr *cfg_shdr = NULL; uint32_t alloc_len; uint32_t resid_len; uint32_t pagen, pcount; void *viraddr; dma_addr_t phyaddr; /* Set up SLI4 mailbox command header fields */ memset(mbox, 0, sizeof(*mbox)); bf_set(lpfc_mqe_command, &mbox->u.mqe, MBX_SLI4_CONFIG); /* Set up SLI4 ioctl command header fields */ sli4_config = &mbox->u.mqe.un.sli4_config; /* Setup for the embedded mbox command */ if (emb) { /* Set up main header fields */ bf_set(lpfc_mbox_hdr_emb, &sli4_config->header.cfg_mhdr, 1); sli4_config->header.cfg_mhdr.payload_length = LPFC_MBX_CMD_HDR_LENGTH + length; /* Set up sub-header fields following main header */ bf_set(lpfc_mbox_hdr_opcode, &sli4_config->header.cfg_shdr.request, opcode); bf_set(lpfc_mbox_hdr_subsystem, &sli4_config->header.cfg_shdr.request, subsystem); sli4_config->header.cfg_shdr.request.request_length = length; return length; } /* Setup for the none-embedded mbox command */ pcount = (PAGE_ALIGN(length))/PAGE_SIZE; pcount = (pcount > LPFC_SLI4_MBX_SGE_MAX_PAGES) ? LPFC_SLI4_MBX_SGE_MAX_PAGES : pcount; /* Allocate record for keeping SGE virtual addresses */ mbox->sge_array = kmalloc(sizeof(struct lpfc_mbx_nembed_sge_virt), GFP_KERNEL); if (!mbox->sge_array) return 0; for (pagen = 0, alloc_len = 0; pagen < pcount; pagen++) { /* The DMA memory is always allocated in the length of a * page even though the last SGE might not fill up to a * page, this is used as a priori size of PAGE_SIZE for * the later DMA memory free. */ viraddr = dma_alloc_coherent(&phba->pcidev->dev, PAGE_SIZE, &phyaddr, GFP_KERNEL); /* In case of malloc fails, proceed with whatever we have */ if (!viraddr) break; memset(viraddr, 0, PAGE_SIZE); mbox->sge_array->addr[pagen] = viraddr; /* Keep the first page for later sub-header construction */ if (pagen == 0) cfg_shdr = (union lpfc_sli4_cfg_shdr *)viraddr; resid_len = length - alloc_len; if (resid_len > PAGE_SIZE) { lpfc_sli4_mbx_sge_set(mbox, pagen, phyaddr, PAGE_SIZE); alloc_len += PAGE_SIZE; } else { lpfc_sli4_mbx_sge_set(mbox, pagen, phyaddr, resid_len); alloc_len = length; } } /* Set up main header fields in mailbox command */ sli4_config->header.cfg_mhdr.payload_length = alloc_len; bf_set(lpfc_mbox_hdr_sge_cnt, &sli4_config->header.cfg_mhdr, pagen); /* Set up sub-header fields into the first page */ if (pagen > 0) { bf_set(lpfc_mbox_hdr_opcode, &cfg_shdr->request, opcode); bf_set(lpfc_mbox_hdr_subsystem, &cfg_shdr->request, subsystem); cfg_shdr->request.request_length = alloc_len - sizeof(union lpfc_sli4_cfg_shdr); } /* The sub-header is in DMA memory, which needs endian converstion */ lpfc_sli_pcimem_bcopy(cfg_shdr, cfg_shdr, sizeof(union lpfc_sli4_cfg_shdr)); return alloc_len; } /** * lpfc_sli4_mbox_opcode_get - Get the opcode from a sli4 mailbox command * @phba: pointer to lpfc hba data structure. * @mbox: pointer to lpfc mbox command. * * This routine gets the opcode from a SLI4 specific mailbox command for * sending IOCTL command. If the mailbox command is not MBX_SLI4_CONFIG * (0x9B) or if the IOCTL sub-header is not present, opcode 0x0 shall be * returned. **/ uint8_t lpfc_sli4_mbox_opcode_get(struct lpfc_hba *phba, struct lpfcMboxq *mbox) { struct lpfc_mbx_sli4_config *sli4_cfg; union lpfc_sli4_cfg_shdr *cfg_shdr; if (mbox->u.mb.mbxCommand != MBX_SLI4_CONFIG) return 0; sli4_cfg = &mbox->u.mqe.un.sli4_config; /* For embedded mbox command, get opcode from embedded sub-header*/ if (bf_get(lpfc_mbox_hdr_emb, &sli4_cfg->header.cfg_mhdr)) { cfg_shdr = &mbox->u.mqe.un.sli4_config.header.cfg_shdr; return bf_get(lpfc_mbox_hdr_opcode, &cfg_shdr->request); } /* For non-embedded mbox command, get opcode from first dma page */ if (unlikely(!mbox->sge_array)) return 0; cfg_shdr = (union lpfc_sli4_cfg_shdr *)mbox->sge_array->addr[0]; return bf_get(lpfc_mbox_hdr_opcode, &cfg_shdr->request); } /** * lpfc_request_features: Configure SLI4 REQUEST_FEATURES mailbox * @mboxq: pointer to lpfc mbox command. * * This routine sets up the mailbox for an SLI4 REQUEST_FEATURES * mailbox command. **/ void lpfc_request_features(struct lpfc_hba *phba, struct lpfcMboxq *mboxq) { /* Set up SLI4 mailbox command header fields */ memset(mboxq, 0, sizeof(LPFC_MBOXQ_t)); bf_set(lpfc_mqe_command, &mboxq->u.mqe, MBX_SLI4_REQ_FTRS); /* Set up host requested features. */ bf_set(lpfc_mbx_rq_ftr_rq_fcpi, &mboxq->u.mqe.un.req_ftrs, 1); if (phba->cfg_enable_fip) bf_set(lpfc_mbx_rq_ftr_rq_ifip, &mboxq->u.mqe.un.req_ftrs, 0); else bf_set(lpfc_mbx_rq_ftr_rq_ifip, &mboxq->u.mqe.un.req_ftrs, 1); /* Enable DIF (block guard) only if configured to do so. */ if (phba->cfg_enable_bg) bf_set(lpfc_mbx_rq_ftr_rq_dif, &mboxq->u.mqe.un.req_ftrs, 1); /* Enable NPIV only if configured to do so. */ if (phba->max_vpi && phba->cfg_enable_npiv) bf_set(lpfc_mbx_rq_ftr_rq_npiv, &mboxq->u.mqe.un.req_ftrs, 1); return; } /** * lpfc_init_vfi - Initialize the INIT_VFI mailbox command * @mbox: pointer to lpfc mbox command to initialize. * @vport: Vport associated with the VF. * * This routine initializes @mbox to all zeros and then fills in the mailbox * fields from @vport. INIT_VFI configures virtual fabrics identified by VFI * in the context of an FCF. The driver issues this command to setup a VFI * before issuing a FLOGI to login to the VSAN. The driver should also issue a * REG_VFI after a successful VSAN login. **/ void lpfc_init_vfi(struct lpfcMboxq *mbox, struct lpfc_vport *vport) { struct lpfc_mbx_init_vfi *init_vfi; memset(mbox, 0, sizeof(*mbox)); init_vfi = &mbox->u.mqe.un.init_vfi; bf_set(lpfc_mqe_command, &mbox->u.mqe, MBX_INIT_VFI); bf_set(lpfc_init_vfi_vr, init_vfi, 1); bf_set(lpfc_init_vfi_vt, init_vfi, 1); bf_set(lpfc_init_vfi_vfi, init_vfi, vport->vfi + vport->phba->vfi_base); bf_set(lpfc_init_vfi_fcfi, init_vfi, vport->phba->fcf.fcfi); } /** * lpfc_reg_vfi - Initialize the REG_VFI mailbox command * @mbox: pointer to lpfc mbox command to initialize. * @vport: vport associated with the VF. * @phys: BDE DMA bus address used to send the service parameters to the HBA. * * This routine initializes @mbox to all zeros and then fills in the mailbox * fields from @vport, and uses @buf as a DMAable buffer to send the vport's * fc service parameters to the HBA for this VFI. REG_VFI configures virtual * fabrics identified by VFI in the context of an FCF. **/ void lpfc_reg_vfi(struct lpfcMboxq *mbox, struct lpfc_vport *vport, dma_addr_t phys) { struct lpfc_mbx_reg_vfi *reg_vfi; memset(mbox, 0, sizeof(*mbox)); reg_vfi = &mbox->u.mqe.un.reg_vfi; bf_set(lpfc_mqe_command, &mbox->u.mqe, MBX_REG_VFI); bf_set(lpfc_reg_vfi_vp, reg_vfi, 1); bf_set(lpfc_reg_vfi_vfi, reg_vfi, vport->vfi + vport->phba->vfi_base); bf_set(lpfc_reg_vfi_fcfi, reg_vfi, vport->phba->fcf.fcfi); bf_set(lpfc_reg_vfi_vpi, reg_vfi, vport->vpi + vport->phba->vpi_base); reg_vfi->bde.addrHigh = putPaddrHigh(phys); reg_vfi->bde.addrLow = putPaddrLow(phys); reg_vfi->bde.tus.f.bdeSize = sizeof(vport->fc_sparam); reg_vfi->bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64; bf_set(lpfc_reg_vfi_nport_id, reg_vfi, vport->fc_myDID); } /** * lpfc_init_vpi - Initialize the INIT_VPI mailbox command * @mbox: pointer to lpfc mbox command to initialize. * @vpi: VPI to be initialized. * * The INIT_VPI mailbox command supports virtual N_Ports. The driver uses the * command to activate a virtual N_Port. The HBA assigns a MAC address to use * with the virtual N Port. The SLI Host issues this command before issuing a * FDISC to connect to the Fabric. The SLI Host should issue a REG_VPI after a * successful virtual NPort login. **/ void lpfc_init_vpi(struct lpfcMboxq *mbox, uint16_t vpi) { memset(mbox, 0, sizeof(*mbox)); bf_set(lpfc_mqe_command, &mbox->u.mqe, MBX_INIT_VPI); bf_set(lpfc_init_vpi_vpi, &mbox->u.mqe.un.init_vpi, vpi); } /** * lpfc_unreg_vfi - Initialize the UNREG_VFI mailbox command * @mbox: pointer to lpfc mbox command to initialize. * @vfi: VFI to be unregistered. * * The UNREG_VFI mailbox command causes the SLI Host to put a virtual fabric * (logical NPort) into the inactive state. The SLI Host must have logged out * and unregistered all remote N_Ports to abort any activity on the virtual * fabric. The SLI Port posts the mailbox response after marking the virtual * fabric inactive. **/ void lpfc_unreg_vfi(struct lpfcMboxq *mbox, uint16_t vfi) { memset(mbox, 0, sizeof(*mbox)); bf_set(lpfc_mqe_command, &mbox->u.mqe, MBX_UNREG_VFI); bf_set(lpfc_unreg_vfi_vfi, &mbox->u.mqe.un.unreg_vfi, vfi); } /** * lpfc_dump_fcoe_param - Dump config region 23 to get FCoe parameters. * @phba: pointer to the hba structure containing. * @mbox: pointer to lpfc mbox command to initialize. * * This function create a SLI4 dump mailbox command to dump FCoE * parameters stored in region 23. **/ int lpfc_dump_fcoe_param(struct lpfc_hba *phba, struct lpfcMboxq *mbox) { struct lpfc_dmabuf *mp = NULL; MAILBOX_t *mb; memset(mbox, 0, sizeof(*mbox)); mb = &mbox->u.mb; mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); if (mp) mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys); if (!mp || !mp->virt) { kfree(mp); /* dump_fcoe_param failed to allocate memory */ lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX, "2569 lpfc_dump_fcoe_param: memory" " allocation failed \n"); return 1; } memset(mp->virt, 0, LPFC_BPL_SIZE); INIT_LIST_HEAD(&mp->list); /* save address for completion */ mbox->context1 = (uint8_t *) mp; mb->mbxCommand = MBX_DUMP_MEMORY; mb->un.varDmp.type = DMP_NV_PARAMS; mb->un.varDmp.region_id = DMP_REGION_FCOEPARAM; mb->un.varDmp.sli4_length = DMP_FCOEPARAM_RGN_SIZE; mb->un.varWords[3] = putPaddrLow(mp->phys); mb->un.varWords[4] = putPaddrHigh(mp->phys); return 0; } /** * lpfc_reg_fcfi - Initialize the REG_FCFI mailbox command * @phba: pointer to the hba structure containing the FCF index and RQ ID. * @mbox: pointer to lpfc mbox command to initialize. * * The REG_FCFI mailbox command supports Fibre Channel Forwarders (FCFs). The * SLI Host uses the command to activate an FCF after it has acquired FCF * information via a READ_FCF mailbox command. This mailbox command also is used * to indicate where received unsolicited frames from this FCF will be sent. By * default this routine will set up the FCF to forward all unsolicited frames * the the RQ ID passed in the @phba. This can be overridden by the caller for * more complicated setups. **/ void lpfc_reg_fcfi(struct lpfc_hba *phba, struct lpfcMboxq *mbox) { struct lpfc_mbx_reg_fcfi *reg_fcfi; memset(mbox, 0, sizeof(*mbox)); reg_fcfi = &mbox->u.mqe.un.reg_fcfi; bf_set(lpfc_mqe_command, &mbox->u.mqe, MBX_REG_FCFI); bf_set(lpfc_reg_fcfi_rq_id0, reg_fcfi, phba->sli4_hba.hdr_rq->queue_id); bf_set(lpfc_reg_fcfi_rq_id1, reg_fcfi, REG_FCF_INVALID_QID); bf_set(lpfc_reg_fcfi_rq_id2, reg_fcfi, REG_FCF_INVALID_QID); bf_set(lpfc_reg_fcfi_rq_id3, reg_fcfi, REG_FCF_INVALID_QID); bf_set(lpfc_reg_fcfi_info_index, reg_fcfi, phba->fcf.fcf_indx); /* reg_fcf addr mode is bit wise inverted value of fcf addr_mode */ bf_set(lpfc_reg_fcfi_mam, reg_fcfi, (~phba->fcf.addr_mode) & 0x3); if (phba->fcf.fcf_flag & FCF_VALID_VLAN) { bf_set(lpfc_reg_fcfi_vv, reg_fcfi, 1); bf_set(lpfc_reg_fcfi_vlan_tag, reg_fcfi, phba->fcf.vlan_id); } } /** * lpfc_unreg_fcfi - Initialize the UNREG_FCFI mailbox command * @mbox: pointer to lpfc mbox command to initialize. * @fcfi: FCFI to be unregistered. * * The UNREG_FCFI mailbox command supports Fibre Channel Forwarders (FCFs). * The SLI Host uses the command to inactivate an FCFI. **/ void lpfc_unreg_fcfi(struct lpfcMboxq *mbox, uint16_t fcfi) { memset(mbox, 0, sizeof(*mbox)); bf_set(lpfc_mqe_command, &mbox->u.mqe, MBX_UNREG_FCFI); bf_set(lpfc_unreg_fcfi, &mbox->u.mqe.un.unreg_fcfi, fcfi); } /** * lpfc_resume_rpi - Initialize the RESUME_RPI mailbox command * @mbox: pointer to lpfc mbox command to initialize. * @ndlp: The nodelist structure that describes the RPI to resume. * * The RESUME_RPI mailbox command is used to restart I/O to an RPI after a * link event. **/ void lpfc_resume_rpi(struct lpfcMboxq *mbox, struct lpfc_nodelist *ndlp) { struct lpfc_mbx_resume_rpi *resume_rpi; memset(mbox, 0, sizeof(*mbox)); resume_rpi = &mbox->u.mqe.un.resume_rpi; bf_set(lpfc_mqe_command, &mbox->u.mqe, MBX_RESUME_RPI); bf_set(lpfc_resume_rpi_index, resume_rpi, ndlp->nlp_rpi); bf_set(lpfc_resume_rpi_ii, resume_rpi, RESUME_INDEX_RPI); resume_rpi->event_tag = ndlp->phba->fc_eventTag; }