/******************************************************************* * This file is part of the Emulex Linux Device Driver for * * Fibre Channel Host Bus Adapters. * * Copyright (C) 2004-2008 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 <linux/blkdev.h> #include <linux/pci.h> #include <linux/interrupt.h> #include <scsi/scsi_device.h> #include <scsi/scsi_transport_fc.h> #include <scsi/scsi.h> #include "lpfc_hw.h" #include "lpfc_sli.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_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->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: 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->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->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->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->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->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->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->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->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->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; /* 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->mb; memset(pmb, 0, sizeof (LPFC_MBOXQ_t)); mb->un.varUnregDID.did = did; 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->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->mb; memset(pmb, 0, sizeof (LPFC_MBOXQ_t)); mb->mbxCommand = MBX_READ_LNK_STAT; mb->mbxOwner = OWN_HOST; return; } /** * lpfc_reg_login: 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_login(struct lpfc_hba *phba, uint16_t vpi, uint32_t did, uint8_t *param, LPFC_MBOXQ_t *pmb, uint32_t flag) { MAILBOX_t *mb = &pmb->mb; uint8_t *sparam; struct lpfc_dmabuf *mp; memset(pmb, 0, sizeof (LPFC_MBOXQ_t)); mb->un.varRegLogin.rpi = 0; mb->un.varRegLogin.vpi = vpi; 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->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; 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_hba *phba, uint16_t vpi, uint32_t sid, LPFC_MBOXQ_t *pmb) { MAILBOX_t *mb = &pmb->mb; memset(pmb, 0, sizeof (LPFC_MBOXQ_t)); mb->un.varRegVpi.vpi = vpi; mb->un.varRegVpi.sid = sid; 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->mb; memset(pmb, 0, sizeof (LPFC_MBOXQ_t)); mb->un.varUnregVpi.vpi = vpi; 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->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->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->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->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); /* If HBA supports SLI=3 ask for it */ if (phba->sli_rev == 3 && phba->vpd.sli3Feat.cerbm) { 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 = phba->max_vpi; mb->un.varCfgPort.cmv = 1; } else mb->un.varCfgPort.max_vpi = phba->max_vpi = 0; } else phba->sli_rev = 2; 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 ring pointer */ if (phba->sli3_options & LPFC_SLI3_INB_ENABLED) { pgp_offset = offsetof(struct lpfc_sli2_slim, mbx.us.s3_inb_pgp.port); phba->hbq_get = phba->mbox->us.s3_inb_pgp.hbq_get; } else if (phba->sli_rev == 3) { pgp_offset = offsetof(struct lpfc_sli2_slim, mbx.us.s3_pgp.port); phba->hbq_get = phba->mbox->us.s3_pgp.hbq_get; } 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->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 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 routine is called from driver interrupt handler * context.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) { /* This function expects to be called from interrupt context */ spin_lock(&phba->hbalock); list_add_tail(&mbq->list, &phba->sli.mboxq_cmpl); spin_unlock(&phba->hbalock); return; } /** * 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; } return LPFC_MBOX_TMO; }