/*******************************************************************
* 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_dump_mem: Prepare a 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->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->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);
/* Always Host Group Pointer is in SLIM */
mb->un.varCfgPort.hps = 1;
/* 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 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->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)
{
unsigned long iflag;
/* This function expects to be called from interrupt context */
spin_lock_irqsave(&phba->hbalock, iflag);
list_add_tail(&mbq->list, &phba->sli.mboxq_cmpl);
spin_unlock_irqrestore(&phba->hbalock, iflag);
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;
}
