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lpfc_mbox.c
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lpfc_mbox.c
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/*******************************************************************
* This file is part of the Emulex Linux Device Driver for *
* Fibre Channel Host Bus Adapters. *
* Copyright (C) 2004-2015 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/slab.h>
#include <linux/interrupt.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_transport_fc.h>
#include <scsi/scsi.h>
#include <scsi/fc/fc_fs.h>
#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.
**/
int
lpfc_dump_static_vport(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb,
uint16_t offset)
{
MAILBOX_t *mb;
struct lpfc_dmabuf *mp;
mb = &pmb->u.mb;
/* Setup to dump vport info region */
memset(pmb, 0, sizeof(LPFC_MBOXQ_t));
mb->mbxCommand = MBX_DUMP_MEMORY;
mb->un.varDmp.type = DMP_NV_PARAMS;
mb->un.varDmp.entry_index = offset;
mb->un.varDmp.region_id = DMP_REGION_VPORT;
mb->mbxOwner = OWN_HOST;
/* For SLI3 HBAs data is embedded in mailbox */
if (phba->sli_rev != LPFC_SLI_REV4) {
mb->un.varDmp.cv = 1;
mb->un.varDmp.word_cnt = DMP_RSP_SIZE/sizeof(uint32_t);
return 0;
}
/* For SLI4 HBAs driver need to allocate memory */
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);
lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
"2605 lpfc_dump_static_vport: memory"
" allocation failed\n");
return 1;
}
memset(mp->virt, 0, LPFC_BPL_SIZE);
INIT_LIST_HEAD(&mp->list);
/* save address for completion */
pmb->context1 = (uint8_t *)mp;
mb->un.varWords[3] = putPaddrLow(mp->phys);
mb->un.varWords[4] = putPaddrHigh(mp->phys);
mb->un.varDmp.sli4_length = sizeof(struct static_vport_info);
return 0;
}
/**
* lpfc_down_link - Bring down HBAs link.
* @phba: pointer to lpfc hba data structure.
* @pmb: pointer to the driver internal queue element for mailbox command.
*
* This routine prepares a mailbox command to bring down HBA link.
**/
void
lpfc_down_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
{
MAILBOX_t *mb;
memset(pmb, 0, sizeof(LPFC_MBOXQ_t));
mb = &pmb->u.mb;
mb->mbxCommand = MBX_DOWN_LINK;
mb->mbxOwner = OWN_HOST;
}
/**
* lpfc_dump_mem - Prepare a mailbox command for reading a region.
* @phba: pointer to lpfc hba data structure.
* @pmb: pointer to the driver internal queue element for mailbox command.
* @offset: offset into the region.
* @region_id: config region id.
*
* 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's config region.
**/
void
lpfc_dump_mem(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb, uint16_t offset,
uint16_t region_id)
{
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 = region_id;
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;
if (phba->sli_rev < LPFC_SLI_REV4)
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_topology - Prepare a mailbox command for reading HBA topology
* @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 topology mailbox command is issued to read the link topology
* information indicated by the HBA port when the Link Event bit of the Host
* Attention (HSTATT) register is set to 1 (For SLI-3) or when an FC Link
* Attention ACQE is received from the port (For SLI-4). 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 topology
* 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_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb,
struct lpfc_dmabuf *mp)
{
MAILBOX_t *mb;
mb = &pmb->u.mb;
memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
INIT_LIST_HEAD(&mp->list);
mb->mbxCommand = MBX_READ_TOPOLOGY;
mb->un.varReadTop.lilpBde64.tus.f.bdeSize = LPFC_ALPA_MAP_SIZE;
mb->un.varReadTop.lilpBde64.addrHigh = putPaddrHigh(mp->phys);
mb->un.varReadTop.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 && (phba->sli_rev < LPFC_SLI_REV4)) {
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 && (phba->sli_rev < LPFC_SLI_REV4))
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;
MAILBOX_t *mb;
mb = &pmb->u.mb;
memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
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;
}
if (phba->pcidev->device == PCI_DEVICE_ID_LANCER_G6_FC &&
mb->un.varInitLnk.link_flags & FLAGS_TOPOLOGY_MODE_LOOP) {
/* Failover is not tried for Lancer G6 */
mb->un.varInitLnk.link_flags = FLAGS_TOPOLOGY_MODE_PT_PT;
phba->cfg_topology = FLAGS_TOPOLOGY_MODE_PT_PT;
}
/* 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 LPFC_USER_LINK_SPEED_1G:
mb->un.varInitLnk.link_flags |= FLAGS_LINK_SPEED;
mb->un.varInitLnk.link_speed = LINK_SPEED_1G;
break;
case LPFC_USER_LINK_SPEED_2G:
mb->un.varInitLnk.link_flags |= FLAGS_LINK_SPEED;
mb->un.varInitLnk.link_speed = LINK_SPEED_2G;
break;
case LPFC_USER_LINK_SPEED_4G:
mb->un.varInitLnk.link_flags |= FLAGS_LINK_SPEED;
mb->un.varInitLnk.link_speed = LINK_SPEED_4G;
break;
case LPFC_USER_LINK_SPEED_8G:
mb->un.varInitLnk.link_flags |= FLAGS_LINK_SPEED;
mb->un.varInitLnk.link_speed = LINK_SPEED_8G;
break;
case LPFC_USER_LINK_SPEED_10G:
mb->un.varInitLnk.link_flags |= FLAGS_LINK_SPEED;
mb->un.varInitLnk.link_speed = LINK_SPEED_10G;
break;
case LPFC_USER_LINK_SPEED_16G:
mb->un.varInitLnk.link_flags |= FLAGS_LINK_SPEED;
mb->un.varInitLnk.link_speed = LINK_SPEED_16G;
break;
case LPFC_USER_LINK_SPEED_32G:
mb->un.varInitLnk.link_flags |= FLAGS_LINK_SPEED;
mb->un.varInitLnk.link_speed = LINK_SPEED_32G;
break;
case LPFC_USER_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;
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);
if (phba->sli_rev >= LPFC_SLI_REV3)
mb->un.varRdSparm.vpi = phba->vpi_ids[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->u.mb;
memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
mb->un.varUnregDID.did = did;
mb->un.varUnregDID.vpi = vpi;
if ((vpi != 0xffff) &&
(phba->sli_rev == LPFC_SLI_REV4))
mb->un.varUnregDID.vpi = phba->vpi_ids[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.
* @rpi: the rpi to use in the registration (usually only used for SLI4.
*
* 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, uint16_t rpi)
{
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 = phba->sli4_hba.rpi_ids[rpi];
if (phba->sli_rev >= LPFC_SLI_REV3)
mb->un.varRegLogin.vpi = phba->vpi_ids[vpi];
mb->un.varRegLogin.did = did;
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, "
"rpi x%x\n", vpi, did, rpi);
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.
*
* For SLI4 ports, the rpi passed to this function must be the physical
* rpi value, not the logical index.
**/
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 = rpi;
mb->un.varUnregLogin.rsvd1 = 0;
if (phba->sli_rev >= LPFC_SLI_REV3)
mb->un.varUnregLogin.vpi = phba->vpi_ids[vpi];
mb->mbxCommand = MBX_UNREG_LOGIN;
mb->mbxOwner = OWN_HOST;
return;
}
/**
* lpfc_sli4_unreg_all_rpis - unregister all RPIs for a vport on SLI4 HBA.
* @vport: pointer to a vport object.
*
* This routine sends mailbox command to unregister all active RPIs for
* a vport.
**/
void
lpfc_sli4_unreg_all_rpis(struct lpfc_vport *vport)
{
struct lpfc_hba *phba = vport->phba;
LPFC_MBOXQ_t *mbox;
int rc;
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (mbox) {
/*
* For SLI4 functions, the rpi field is overloaded for
* the vport context unreg all. This routine passes
* 0 for the rpi field in lpfc_unreg_login for compatibility
* with SLI3 and then overrides the rpi field with the
* expected value for SLI4.
*/
lpfc_unreg_login(phba, vport->vpi, phba->vpi_ids[vport->vpi],
mbox);
mbox->u.mb.un.varUnregLogin.rsvd1 = 0x4000;
mbox->vport = vport;
mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
mbox->context1 = NULL;
rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
if (rc == MBX_NOT_FINISHED)
mempool_free(mbox, phba->mbox_mem_pool);
}
}
/**
* 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;
struct lpfc_hba *phba = vport->phba;
memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
/*
* Set the re-reg VPI bit for f/w to update the MAC address.
*/
if ((phba->sli_rev == LPFC_SLI_REV4) &&
!(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI))
mb->un.varRegVpi.upd = 1;
mb->un.varRegVpi.vpi = phba->vpi_ids[vport->vpi];
mb->un.varRegVpi.sid = vport->fc_myDID;
if (phba->sli_rev == LPFC_SLI_REV4)
mb->un.varRegVpi.vfi = phba->sli4_hba.vfi_ids[vport->vfi];
else
mb->un.varRegVpi.vfi = vport->vfi + vport->phba->vfi_base;
memcpy(mb->un.varRegVpi.wwn, &vport->fc_portname,
sizeof(struct lpfc_name));
mb->un.varRegVpi.wwn[0] = cpu_to_le32(mb->un.varRegVpi.wwn[0]);
mb->un.varRegVpi.wwn[1] = cpu_to_le32(mb->un.varRegVpi.wwn[1]);
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));
if (phba->sli_rev == LPFC_SLI_REV3)
mb->un.varUnregVpi.vpi = phba->vpi_ids[vpi];
else if (phba->sli_rev >= LPFC_SLI_REV4)
mb->un.varUnregVpi.sli4_vpi = phba->vpi_ids[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->sli.sli3.sizeCiocb =
phba->sli_rev == 3 ? SLI3_IOCB_CMD_SIZE :
SLI2_IOCB_CMD_SIZE;
pring->sli.sli3.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->sli.sli3.numCiocb == 0) ||
(pring->sli.sli3.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->sli.sli3.cmdringaddr = NULL;
pring->sli.sli3.rspringaddr = NULL;
continue;
}
/* Command ring setup for ring */
pring->sli.sli3.cmdringaddr = (void *)&phba->IOCBs[iocbCnt];
pcbp->rdsc[i].cmdEntries = pring->sli.sli3.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->sli.sli3.numCiocb;
/* Response ring setup for ring */
pring->sli.sli3.rspringaddr = (void *) &phba->IOCBs[iocbCnt];
pcbp->rdsc[i].rspEntries = pring->sli.sli3.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->sli.sli3.numRiocb;
}