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linux/drivers/scsi/lpfc/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) 2004-2005 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_disc.h"
#include "lpfc_scsi.h"
#include "lpfc.h"
#include "lpfc_logmsg.h"
#include "lpfc_crtn.h"
#include "lpfc_compat.h"
/**********************************************/
/* mailbox command */
/**********************************************/
void
lpfc_dump_mem(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb, uint16_t offset)
{
MAILBOX_t *mb;
void *ctx;
mb = &pmb->mb;
ctx = pmb->context2;
/* Setup to dump VPD region */
memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
mb->mbxCommand = MBX_DUMP_MEMORY;
mb->un.varDmp.cv = 1;
mb->un.varDmp.type = DMP_NV_PARAMS;
mb->un.varDmp.entry_index = offset;
mb->un.varDmp.region_id = DMP_REGION_VPD;
mb->un.varDmp.word_cnt = (DMP_RSP_SIZE / sizeof (uint32_t));
mb->un.varDmp.co = 0;
mb->un.varDmp.resp_offset = 0;
pmb->context2 = ctx;
mb->mbxOwner = OWN_HOST;
return;
}
/**********************************************/
/* lpfc_read_nv Issue a READ NVPARAM */
/* mailbox command */
/**********************************************/
void
lpfc_read_nv(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
{
MAILBOX_t *mb;
mb = &pmb->mb;
memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
mb->mbxCommand = MBX_READ_NV;
mb->mbxOwner = OWN_HOST;
return;
}
/**********************************************/
/* lpfc_read_la Issue a READ LA */
/* mailbox command */
/**********************************************/
int
lpfc_read_la(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb, struct lpfc_dmabuf *mp)
{
MAILBOX_t *mb;
struct lpfc_sli *psli;
psli = &phba->sli;
mb = &pmb->mb;
memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
INIT_LIST_HEAD(&mp->list);
mb->mbxCommand = MBX_READ_LA64;
mb->un.varReadLA.un.lilpBde64.tus.f.bdeSize = 128;
mb->un.varReadLA.un.lilpBde64.addrHigh = putPaddrHigh(mp->phys);
mb->un.varReadLA.un.lilpBde64.addrLow = putPaddrLow(mp->phys);
/* Save address for later completion and set the owner to host so that
* the FW knows this mailbox is available for processing.
*/
pmb->context1 = (uint8_t *) mp;
mb->mbxOwner = OWN_HOST;
return (0);
}
/**********************************************/
/* lpfc_clear_la Issue a CLEAR LA */
/* mailbox command */
/**********************************************/
void
lpfc_clear_la(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
{
MAILBOX_t *mb;
mb = &pmb->mb;
memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
mb->un.varClearLA.eventTag = phba->fc_eventTag;
mb->mbxCommand = MBX_CLEAR_LA;
mb->mbxOwner = OWN_HOST;
return;
}
/**************************************************/
/* lpfc_config_link Issue a CONFIG LINK */
/* mailbox command */
/**************************************************/
void
lpfc_config_link(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
{
MAILBOX_t *mb = &pmb->mb;
memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
/* NEW_FEATURE
* SLI-2, Coalescing Response Feature.
*/
if (phba->cfg_cr_delay) {
mb->un.varCfgLnk.cr = 1;
mb->un.varCfgLnk.ci = 1;
mb->un.varCfgLnk.cr_delay = phba->cfg_cr_delay;
mb->un.varCfgLnk.cr_count = phba->cfg_cr_count;
}
mb->un.varCfgLnk.myId = phba->fc_myDID;
mb->un.varCfgLnk.edtov = phba->fc_edtov;
mb->un.varCfgLnk.arbtov = phba->fc_arbtov;
mb->un.varCfgLnk.ratov = phba->fc_ratov;
mb->un.varCfgLnk.rttov = phba->fc_rttov;
mb->un.varCfgLnk.altov = phba->fc_altov;
mb->un.varCfgLnk.crtov = phba->fc_crtov;
mb->un.varCfgLnk.citov = phba->fc_citov;
if (phba->cfg_ack0)
mb->un.varCfgLnk.ack0_enable = 1;
mb->mbxCommand = MBX_CONFIG_LINK;
mb->mbxOwner = OWN_HOST;
return;
}
/**********************************************/
/* lpfc_init_link Issue an INIT LINK */
/* mailbox command */
/**********************************************/
void
lpfc_init_link(struct lpfc_hba * phba,
LPFC_MBOXQ_t * pmb, uint32_t topology, uint32_t linkspeed)
{
lpfc_vpd_t *vpd;
struct lpfc_sli *psli;
MAILBOX_t *mb;
mb = &pmb->mb;
memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
psli = &phba->sli;
switch (topology) {
case FLAGS_TOPOLOGY_MODE_LOOP_PT:
mb->un.varInitLnk.link_flags = FLAGS_TOPOLOGY_MODE_LOOP;
mb->un.varInitLnk.link_flags |= FLAGS_TOPOLOGY_FAILOVER;
break;
case FLAGS_TOPOLOGY_MODE_PT_PT:
mb->un.varInitLnk.link_flags = FLAGS_TOPOLOGY_MODE_PT_PT;
break;
case FLAGS_TOPOLOGY_MODE_LOOP:
mb->un.varInitLnk.link_flags = FLAGS_TOPOLOGY_MODE_LOOP;
break;
case FLAGS_TOPOLOGY_MODE_PT_LOOP:
mb->un.varInitLnk.link_flags = FLAGS_TOPOLOGY_MODE_PT_PT;
mb->un.varInitLnk.link_flags |= FLAGS_TOPOLOGY_FAILOVER;
break;
}
/* NEW_FEATURE
* Setting up the link speed
*/
vpd = &phba->vpd;
if (vpd->rev.feaLevelHigh >= 0x02){
switch(linkspeed){
case LINK_SPEED_1G:
case LINK_SPEED_2G:
case LINK_SPEED_4G:
mb->un.varInitLnk.link_flags |=
FLAGS_LINK_SPEED;
mb->un.varInitLnk.link_speed = linkspeed;
break;
case LINK_SPEED_AUTO:
default:
mb->un.varInitLnk.link_speed =
LINK_SPEED_AUTO;
break;
}
}
else
mb->un.varInitLnk.link_speed = LINK_SPEED_AUTO;
mb->mbxCommand = (volatile uint8_t)MBX_INIT_LINK;
mb->mbxOwner = OWN_HOST;
mb->un.varInitLnk.fabric_AL_PA = phba->fc_pref_ALPA;
return;
}
/**********************************************/
/* lpfc_read_sparam Issue a READ SPARAM */
/* mailbox command */
/**********************************************/
int
lpfc_read_sparam(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
{
struct lpfc_dmabuf *mp;
MAILBOX_t *mb;
struct lpfc_sli *psli;
psli = &phba->sli;
mb = &pmb->mb;
memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
mb->mbxOwner = OWN_HOST;
/* Get a buffer to hold the HBAs Service Parameters */
if (((mp = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL)) == 0) ||
((mp->virt = lpfc_mbuf_alloc(phba, 0, &(mp->phys))) == 0)) {
kfree(mp);
mb->mbxCommand = MBX_READ_SPARM64;
/* READ_SPARAM: no buffers */
lpfc_printf_log(phba,
KERN_WARNING,
LOG_MBOX,
"%d:0301 READ_SPARAM: no buffers\n",
phba->brd_no);
return (1);
}
INIT_LIST_HEAD(&mp->list);
mb->mbxCommand = MBX_READ_SPARM64;
mb->un.varRdSparm.un.sp64.tus.f.bdeSize = sizeof (struct serv_parm);
mb->un.varRdSparm.un.sp64.addrHigh = putPaddrHigh(mp->phys);
mb->un.varRdSparm.un.sp64.addrLow = putPaddrLow(mp->phys);
/* save address for completion */
pmb->context1 = mp;
return (0);
}
/********************************************/
/* lpfc_unreg_did Issue a UNREG_DID */
/* mailbox command */
/********************************************/
void
lpfc_unreg_did(struct lpfc_hba * phba, uint32_t did, LPFC_MBOXQ_t * pmb)
{
MAILBOX_t *mb;
mb = &pmb->mb;
memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
mb->un.varUnregDID.did = did;
mb->mbxCommand = MBX_UNREG_D_ID;
mb->mbxOwner = OWN_HOST;
return;
}
/***********************************************/
/* command to write slim */
/***********************************************/
void
lpfc_set_slim(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb, uint32_t addr,
uint32_t value)
{
MAILBOX_t *mb;
mb = &pmb->mb;
memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
/* addr = 0x090597 is AUTO ABTS disable for ELS commands */
/* addr = 0x052198 is DELAYED ABTS enable for ELS commands */
/*
* Always turn on DELAYED ABTS for ELS timeouts
*/
if ((addr == 0x052198) && (value == 0))
value = 1;
mb->un.varWords[0] = addr;
mb->un.varWords[1] = value;
mb->mbxCommand = MBX_SET_SLIM;
mb->mbxOwner = OWN_HOST;
return;
}
/**********************************************/
/* lpfc_read_nv Issue a READ CONFIG */
/* mailbox command */
/**********************************************/
void
lpfc_read_config(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
{
MAILBOX_t *mb;
mb = &pmb->mb;
memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
mb->mbxCommand = MBX_READ_CONFIG;
mb->mbxOwner = OWN_HOST;
return;
}
/*************************************************/
/* lpfc_read_lnk_stat Issue a READ LINK STATUS */
/* mailbox command */
/*************************************************/
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 Issue a REG_LOGIN */
/* mailbox command */
/********************************************/
int
lpfc_reg_login(struct lpfc_hba * phba,
uint32_t did, uint8_t * param, LPFC_MBOXQ_t * pmb, uint32_t flag)
{
uint8_t *sparam;
struct lpfc_dmabuf *mp;
MAILBOX_t *mb;
struct lpfc_sli *psli;
psli = &phba->sli;
mb = &pmb->mb;
memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
mb->un.varRegLogin.rpi = 0;
mb->un.varRegLogin.did = did;
mb->un.varWords[30] = flag; /* Set flag to issue action on cmpl */
mb->mbxOwner = OWN_HOST;
/* Get a buffer to hold NPorts Service Parameters */
if (((mp = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL)) == NULL) ||
((mp->virt = lpfc_mbuf_alloc(phba, 0, &(mp->phys))) == 0)) {
kfree(mp);
mb->mbxCommand = MBX_REG_LOGIN64;
/* REG_LOGIN: no buffers */
lpfc_printf_log(phba,
KERN_WARNING,
LOG_MBOX,
"%d:0302 REG_LOGIN: no buffers Data x%x x%x\n",
phba->brd_no,
(uint32_t) did, (uint32_t) flag);
return (1);
}
INIT_LIST_HEAD(&mp->list);
sparam = mp->virt;
/* Copy param's into a new buffer */
memcpy(sparam, param, sizeof (struct serv_parm));
/* save address for completion */
pmb->context1 = (uint8_t *) mp;
mb->mbxCommand = MBX_REG_LOGIN64;
mb->un.varRegLogin.un.sp64.tus.f.bdeSize = sizeof (struct serv_parm);
mb->un.varRegLogin.un.sp64.addrHigh = putPaddrHigh(mp->phys);
mb->un.varRegLogin.un.sp64.addrLow = putPaddrLow(mp->phys);
return (0);
}
/**********************************************/
/* lpfc_unreg_login Issue a UNREG_LOGIN */
/* mailbox command */
/**********************************************/
void
lpfc_unreg_login(struct lpfc_hba * phba, uint32_t rpi, LPFC_MBOXQ_t * pmb)
{
MAILBOX_t *mb;
mb = &pmb->mb;
memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
mb->un.varUnregLogin.rpi = (uint16_t) rpi;
mb->un.varUnregLogin.rsvd1 = 0;
mb->mbxCommand = MBX_UNREG_LOGIN;
mb->mbxOwner = OWN_HOST;
return;
}
static void
lpfc_config_pcb_setup(struct lpfc_hba * phba)
{
struct lpfc_sli *psli = &phba->sli;
struct lpfc_sli_ring *pring;
PCB_t *pcbp = &phba->slim2p->pcb;
dma_addr_t pdma_addr;
uint32_t offset;
uint32_t iocbCnt;
int i;
pcbp->maxRing = (psli->num_rings - 1);
iocbCnt = 0;
for (i = 0; i < psli->num_rings; i++) {
pring = &psli->ring[i];
/* A ring MUST have both cmd and rsp entries defined to be
valid */
if ((pring->numCiocb == 0) || (pring->numRiocb == 0)) {
pcbp->rdsc[i].cmdEntries = 0;
pcbp->rdsc[i].rspEntries = 0;
pcbp->rdsc[i].cmdAddrHigh = 0;
pcbp->rdsc[i].rspAddrHigh = 0;
pcbp->rdsc[i].cmdAddrLow = 0;
pcbp->rdsc[i].rspAddrLow = 0;
pring->cmdringaddr = NULL;
pring->rspringaddr = NULL;
continue;
}
/* Command ring setup for ring */
pring->cmdringaddr =
(void *)&phba->slim2p->IOCBs[iocbCnt];
pcbp->rdsc[i].cmdEntries = pring->numCiocb;
offset = (uint8_t *)&phba->slim2p->IOCBs[iocbCnt] -
(uint8_t *)phba->slim2p;
pdma_addr = phba->slim2p_mapping + offset;
pcbp->rdsc[i].cmdAddrHigh = putPaddrHigh(pdma_addr);
pcbp->rdsc[i].cmdAddrLow = putPaddrLow(pdma_addr);
iocbCnt += pring->numCiocb;
/* Response ring setup for ring */
pring->rspringaddr =
(void *)&phba->slim2p->IOCBs[iocbCnt];
pcbp->rdsc[i].rspEntries = pring->numRiocb;
offset = (uint8_t *)&phba->slim2p->IOCBs[iocbCnt] -
(uint8_t *)phba->slim2p;
pdma_addr = phba->slim2p_mapping + offset;
pcbp->rdsc[i].rspAddrHigh = putPaddrHigh(pdma_addr);
pcbp->rdsc[i].rspAddrLow = putPaddrLow(pdma_addr);
iocbCnt += pring->numRiocb;
}
}
void
lpfc_read_rev(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
{
MAILBOX_t *mb;
mb = &pmb->mb;
memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
mb->un.varRdRev.cv = 1;
mb->mbxCommand = MBX_READ_REV;
mb->mbxOwner = OWN_HOST;
return;
}
void
lpfc_config_ring(struct lpfc_hba * phba, int ring, LPFC_MBOXQ_t * pmb)
{
int i;
MAILBOX_t *mb = &pmb->mb;
struct lpfc_sli *psli;
struct lpfc_sli_ring *pring;
memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
mb->un.varCfgRing.ring = ring;
mb->un.varCfgRing.maxOrigXchg = 0;
mb->un.varCfgRing.maxRespXchg = 0;
mb->un.varCfgRing.recvNotify = 1;
psli = &phba->sli;
pring = &psli->ring[ring];
mb->un.varCfgRing.numMask = pring->num_mask;
mb->mbxCommand = MBX_CONFIG_RING;
mb->mbxOwner = OWN_HOST;
/* Is this ring configured for a specific profile */
if (pring->prt[0].profile) {
mb->un.varCfgRing.profile = pring->prt[0].profile;
return;
}
/* Otherwise we setup specific rctl / type masks for this ring */
for (i = 0; i < pring->num_mask; i++) {
mb->un.varCfgRing.rrRegs[i].rval = pring->prt[i].rctl;
if (mb->un.varCfgRing.rrRegs[i].rval != FC_ELS_REQ)
mb->un.varCfgRing.rrRegs[i].rmask = 0xff;
else
mb->un.varCfgRing.rrRegs[i].rmask = 0xfe;
mb->un.varCfgRing.rrRegs[i].tval = pring->prt[i].type;
mb->un.varCfgRing.rrRegs[i].tmask = 0xff;
}
return;
}
void
lpfc_config_port(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
{
MAILBOX_t *mb = &pmb->mb;
dma_addr_t pdma_addr;
uint32_t bar_low, bar_high;
size_t offset;
struct lpfc_hgp hgp;
void __iomem *to_slim;
int i;
memset(pmb, 0, sizeof(LPFC_MBOXQ_t));
mb->mbxCommand = MBX_CONFIG_PORT;
mb->mbxOwner = OWN_HOST;
mb->un.varCfgPort.pcbLen = sizeof(PCB_t);
offset = (uint8_t *)&phba->slim2p->pcb - (uint8_t *)phba->slim2p;
pdma_addr = phba->slim2p_mapping + offset;
mb->un.varCfgPort.pcbLow = putPaddrLow(pdma_addr);
mb->un.varCfgPort.pcbHigh = putPaddrHigh(pdma_addr);
/* Now setup pcb */
phba->slim2p->pcb.type = TYPE_NATIVE_SLI2;
phba->slim2p->pcb.feature = FEATURE_INITIAL_SLI2;
/* Setup Mailbox pointers */
phba->slim2p->pcb.mailBoxSize = sizeof(MAILBOX_t);
offset = (uint8_t *)&phba->slim2p->mbx - (uint8_t *)phba->slim2p;
pdma_addr = phba->slim2p_mapping + offset;
phba->slim2p->pcb.mbAddrHigh = putPaddrHigh(pdma_addr);
phba->slim2p->pcb.mbAddrLow = putPaddrLow(pdma_addr);
/*
* Setup Host Group ring pointer.
*
* For efficiency reasons, the ring get/put pointers can be
* placed in adapter memory (SLIM) rather than in host memory.
* This allows firmware to avoid PCI reads/writes when updating
* and checking pointers.
*
* The firmware recognizes the use of SLIM memory by comparing
* the address of the get/put pointers structure with that of
* the SLIM BAR (BAR0).
*
* Caution: be sure to use the PCI config space value of BAR0/BAR1
* (the hardware's view of the base address), not the OS's
* value of pci_resource_start() as the OS value may be a cookie
* for ioremap/iomap.
*/
pci_read_config_dword(phba->pcidev, PCI_BASE_ADDRESS_0, &bar_low);
pci_read_config_dword(phba->pcidev, PCI_BASE_ADDRESS_1, &bar_high);
/* mask off BAR0's flag bits 0 - 3 */
phba->slim2p->pcb.hgpAddrLow = (bar_low & PCI_BASE_ADDRESS_MEM_MASK) +
(SLIMOFF*sizeof(uint32_t));
if (bar_low & PCI_BASE_ADDRESS_MEM_TYPE_64)
phba->slim2p->pcb.hgpAddrHigh = bar_high;
else
phba->slim2p->pcb.hgpAddrHigh = 0;
/* write HGP data to SLIM at the required longword offset */
memset(&hgp, 0, sizeof(struct lpfc_hgp));
to_slim = phba->MBslimaddr + (SLIMOFF*sizeof (uint32_t));
for (i=0; i < phba->sli.num_rings; i++) {
lpfc_memcpy_to_slim(to_slim, &hgp, sizeof(struct lpfc_hgp));
to_slim += sizeof (struct lpfc_hgp);
}
/* Setup Port Group ring pointer */
offset = (uint8_t *)&phba->slim2p->mbx.us.s2.port -
(uint8_t *)phba->slim2p;
pdma_addr = phba->slim2p_mapping + offset;
phba->slim2p->pcb.pgpAddrHigh = putPaddrHigh(pdma_addr);
phba->slim2p->pcb.pgpAddrLow = putPaddrLow(pdma_addr);
/* Use callback routine to setp rings in the pcb */
lpfc_config_pcb_setup(phba);
/* special handling for LC HBAs */
if (lpfc_is_LC_HBA(phba->pcidev->device)) {
uint32_t hbainit[5];
lpfc_hba_init(phba, hbainit);
memcpy(&mb->un.varCfgPort.hbainit, hbainit, 20);
}
/* Swap PCB if needed */
lpfc_sli_pcimem_bcopy(&phba->slim2p->pcb, &phba->slim2p->pcb,
sizeof (PCB_t));
lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
"%d:0405 Service Level Interface (SLI) 2 selected\n",
phba->brd_no);
}
void
lpfc_mbox_put(struct lpfc_hba * phba, LPFC_MBOXQ_t * mbq)
{
struct lpfc_sli *psli;
psli = &phba->sli;
list_add_tail(&mbq->list, &psli->mboxq);
psli->mboxq_cnt++;
return;
}
LPFC_MBOXQ_t *
lpfc_mbox_get(struct lpfc_hba * phba)
{
LPFC_MBOXQ_t *mbq = NULL;
struct lpfc_sli *psli = &phba->sli;
list_remove_head((&psli->mboxq), mbq, LPFC_MBOXQ_t,
list);
if (mbq) {
psli->mboxq_cnt--;
}
return mbq;
}
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