/*******************************************************************
* 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 <linux/delay.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include "lpfc_hw.h"
#include "lpfc_sli.h"
#include "lpfc_disc.h"
#include "lpfc_scsi.h"
#include "lpfc.h"
#include "lpfc_crtn.h"
#include "lpfc_logmsg.h"
#include "lpfc_compat.h"
/*
* Define macro to log: Mailbox command x%x cannot issue Data
* This allows multiple uses of lpfc_msgBlk0311
* w/o perturbing log msg utility.
*/
#define LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag) \
lpfc_printf_log(phba, \
KERN_INFO, \
LOG_MBOX | LOG_SLI, \
"%d:0311 Mailbox command x%x cannot issue " \
"Data: x%x x%x x%x\n", \
phba->brd_no, \
mb->mbxCommand, \
phba->hba_state, \
psli->sli_flag, \
flag);
/* There are only four IOCB completion types. */
typedef enum _lpfc_iocb_type {
LPFC_UNKNOWN_IOCB,
LPFC_UNSOL_IOCB,
LPFC_SOL_IOCB,
LPFC_ABORT_IOCB
} lpfc_iocb_type;
/*
* Translate the iocb command to an iocb command type used to decide the final
* disposition of each completed IOCB.
*/
static lpfc_iocb_type
lpfc_sli_iocb_cmd_type(uint8_t iocb_cmnd)
{
lpfc_iocb_type type = LPFC_UNKNOWN_IOCB;
if (iocb_cmnd > CMD_MAX_IOCB_CMD)
return 0;
switch (iocb_cmnd) {
case CMD_XMIT_SEQUENCE_CR:
case CMD_XMIT_SEQUENCE_CX:
case CMD_XMIT_BCAST_CN:
case CMD_XMIT_BCAST_CX:
case CMD_ELS_REQUEST_CR:
case CMD_ELS_REQUEST_CX:
case CMD_CREATE_XRI_CR:
case CMD_CREATE_XRI_CX:
case CMD_GET_RPI_CN:
case CMD_XMIT_ELS_RSP_CX:
case CMD_GET_RPI_CR:
case CMD_FCP_IWRITE_CR:
case CMD_FCP_IWRITE_CX:
case CMD_FCP_IREAD_CR:
case CMD_FCP_IREAD_CX:
case CMD_FCP_ICMND_CR:
case CMD_FCP_ICMND_CX:
case CMD_ADAPTER_MSG:
case CMD_ADAPTER_DUMP:
case CMD_XMIT_SEQUENCE64_CR:
case CMD_XMIT_SEQUENCE64_CX:
case CMD_XMIT_BCAST64_CN:
case CMD_XMIT_BCAST64_CX:
case CMD_ELS_REQUEST64_CR:
case CMD_ELS_REQUEST64_CX:
case CMD_FCP_IWRITE64_CR:
case CMD_FCP_IWRITE64_CX:
case CMD_FCP_IREAD64_CR:
case CMD_FCP_IREAD64_CX:
case CMD_FCP_ICMND64_CR:
case CMD_FCP_ICMND64_CX:
case CMD_GEN_REQUEST64_CR:
case CMD_GEN_REQUEST64_CX:
case CMD_XMIT_ELS_RSP64_CX:
type = LPFC_SOL_IOCB;
break;
case CMD_ABORT_XRI_CN:
case CMD_ABORT_XRI_CX:
case CMD_CLOSE_XRI_CN:
case CMD_CLOSE_XRI_CX:
case CMD_XRI_ABORTED_CX:
case CMD_ABORT_MXRI64_CN:
type = LPFC_ABORT_IOCB;
break;
case CMD_RCV_SEQUENCE_CX:
case CMD_RCV_ELS_REQ_CX:
case CMD_RCV_SEQUENCE64_CX:
case CMD_RCV_ELS_REQ64_CX:
type = LPFC_UNSOL_IOCB;
break;
default:
type = LPFC_UNKNOWN_IOCB;
break;
}
return type;
}
static int
lpfc_sli_ring_map(struct lpfc_hba * phba, LPFC_MBOXQ_t *pmb)
{
struct lpfc_sli *psli = &phba->sli;
MAILBOX_t *pmbox = &pmb->mb;
int i, rc;
for (i = 0; i < psli->num_rings; i++) {
phba->hba_state = LPFC_INIT_MBX_CMDS;
lpfc_config_ring(phba, i, pmb);
rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
if (rc != MBX_SUCCESS) {
lpfc_printf_log(phba,
KERN_ERR,
LOG_INIT,
"%d:0446 Adapter failed to init, "
"mbxCmd x%x CFG_RING, mbxStatus x%x, "
"ring %d\n",
phba->brd_no,
pmbox->mbxCommand,
pmbox->mbxStatus,
i);
phba->hba_state = LPFC_HBA_ERROR;
return -ENXIO;
}
}
return 0;
}
static int
lpfc_sli_ringtxcmpl_put(struct lpfc_hba * phba,
struct lpfc_sli_ring * pring, struct lpfc_iocbq * piocb)
{
uint16_t iotag;
list_add_tail(&piocb->list, &pring->txcmplq);
pring->txcmplq_cnt++;
if (unlikely(pring->ringno == LPFC_ELS_RING))
mod_timer(&phba->els_tmofunc,
jiffies + HZ * (phba->fc_ratov << 1));
if (pring->fast_lookup) {
/* Setup fast lookup based on iotag for completion */
iotag = piocb->iocb.ulpIoTag;
if (iotag && (iotag < pring->fast_iotag))
*(pring->fast_lookup + iotag) = piocb;
else {
/* Cmd ring <ringno> put: iotag <iotag> greater then
configured max <fast_iotag> wd0 <icmd> */
lpfc_printf_log(phba,
KERN_ERR,
LOG_SLI,
"%d:0316 Cmd ring %d put: iotag x%x "
"greater then configured max x%x "
"wd0 x%x\n",
phba->brd_no,
pring->ringno, iotag,
pring->fast_iotag,
*(((uint32_t *)(&piocb->iocb)) + 7));
}
}
return (0);
}
static struct lpfc_iocbq *
lpfc_sli_ringtx_get(struct lpfc_hba * phba, struct lpfc_sli_ring * pring)
{
struct list_head *dlp;
struct lpfc_iocbq *cmd_iocb;
dlp = &pring->txq;
cmd_iocb = NULL;
list_remove_head((&pring->txq), cmd_iocb,
struct lpfc_iocbq,
list);
if (cmd_iocb) {
/* If the first ptr is not equal to the list header,
* deque the IOCBQ_t and return it.
*/
pring->txq_cnt--;
}
return (cmd_iocb);
}
static IOCB_t *
lpfc_sli_next_iocb_slot (struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
{
struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno];
uint32_t max_cmd_idx = pring->numCiocb;
IOCB_t *iocb = NULL;
if ((pring->next_cmdidx == pring->cmdidx) &&
(++pring->next_cmdidx >= max_cmd_idx))
pring->next_cmdidx = 0;
if (unlikely(pring->local_getidx == pring->next_cmdidx)) {
pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
if (unlikely(pring->local_getidx >= max_cmd_idx)) {
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"%d:0315 Ring %d issue: portCmdGet %d "
"is bigger then cmd ring %d\n",
phba->brd_no, pring->ringno,
pring->local_getidx, max_cmd_idx);
phba->hba_state = LPFC_HBA_ERROR;
/*
* All error attention handlers are posted to
* worker thread
*/
phba->work_ha |= HA_ERATT;
phba->work_hs = HS_FFER3;
if (phba->work_wait)
wake_up(phba->work_wait);
return NULL;
}
if (pring->local_getidx == pring->next_cmdidx)
return NULL;
}
iocb = IOCB_ENTRY(pring->cmdringaddr, pring->cmdidx);
return iocb;
}
static uint32_t
lpfc_sli_next_iotag(struct lpfc_hba * phba, struct lpfc_sli_ring * pring)
{
uint32_t search_start;
if (pring->fast_lookup == NULL) {
pring->iotag_ctr++;
if (pring->iotag_ctr >= pring->iotag_max)
pring->iotag_ctr = 1;
return pring->iotag_ctr;
}
search_start = pring->iotag_ctr;
do {
pring->iotag_ctr++;
if (pring->iotag_ctr >= pring->fast_iotag)
pring->iotag_ctr = 1;
if (*(pring->fast_lookup + pring->iotag_ctr) == NULL)
return pring->iotag_ctr;
} while (pring->iotag_ctr != search_start);
/*
* Outstanding I/O count for ring <ringno> is at max <fast_iotag>
*/
lpfc_printf_log(phba,
KERN_ERR,
LOG_SLI,
"%d:0318 Outstanding I/O count for ring %d is at max x%x\n",
phba->brd_no,
pring->ringno,
pring->fast_iotag);
return (0);
}
static void
lpfc_sli_submit_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
IOCB_t *iocb, struct lpfc_iocbq *nextiocb)
{
/*
* Allocate and set up an iotag
*/
nextiocb->iocb.ulpIoTag =
lpfc_sli_next_iotag(phba, &phba->sli.ring[phba->sli.fcp_ring]);
/*
* Issue iocb command to adapter
*/
lpfc_sli_pcimem_bcopy(&nextiocb->iocb, iocb, sizeof (IOCB_t));
wmb();
pring->stats.iocb_cmd++;
/*
* If there is no completion routine to call, we can release the
* IOCB buffer back right now. For IOCBs, like QUE_RING_BUF,
* that have no rsp ring completion, iocb_cmpl MUST be NULL.
*/
if (nextiocb->iocb_cmpl)
lpfc_sli_ringtxcmpl_put(phba, pring, nextiocb);
else {
list_add_tail(&nextiocb->list, &phba->lpfc_iocb_list);
}
/*
* Let the HBA know what IOCB slot will be the next one the
* driver will put a command into.
*/
pring->cmdidx = pring->next_cmdidx;
writeb(pring->cmdidx, phba->MBslimaddr
+ (SLIMOFF + (pring->ringno * 2)) * 4);
}
static void
lpfc_sli_update_full_ring(struct lpfc_hba * phba,
struct lpfc_sli_ring *pring)
{
int ringno = pring->ringno;
pring->flag |= LPFC_CALL_RING_AVAILABLE;
wmb();
/*
* Set ring 'ringno' to SET R0CE_REQ in Chip Att register.
* The HBA will tell us when an IOCB entry is available.
*/
writel((CA_R0ATT|CA_R0CE_REQ) << (ringno*4), phba->CAregaddr);
readl(phba->CAregaddr); /* flush */
pring->stats.iocb_cmd_full++;
}
static void
lpfc_sli_update_ring(struct lpfc_hba * phba,
struct lpfc_sli_ring *pring)
{
int ringno = pring->ringno;
/*
* Tell the HBA that there is work to do in this ring.
*/
wmb();
writel(CA_R0ATT << (ringno * 4), phba->CAregaddr);
readl(phba->CAregaddr); /* flush */
}
static void
lpfc_sli_resume_iocb(struct lpfc_hba * phba, struct lpfc_sli_ring * pring)
{
IOCB_t *iocb;
struct lpfc_iocbq *nextiocb;
/*
* Check to see if:
* (a) there is anything on the txq to send
* (b) link is up
* (c) link attention events can be processed (fcp ring only)
* (d) IOCB processing is not blocked by the outstanding mbox command.
*/
if (pring->txq_cnt &&
(phba->hba_state > LPFC_LINK_DOWN) &&
(pring->ringno != phba->sli.fcp_ring ||
phba->sli.sli_flag & LPFC_PROCESS_LA) &&
!(pring->flag & LPFC_STOP_IOCB_MBX)) {
while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) &&
(nextiocb = lpfc_sli_ringtx_get(phba, pring)))
lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb);
if (iocb)
lpfc_sli_update_ring(phba, pring);
else
lpfc_sli_update_full_ring(phba, pring);
}
return;
}
/* lpfc_sli_turn_on_ring is only called by lpfc_sli_handle_mb_event below */
static void
lpfc_sli_turn_on_ring(struct lpfc_hba * phba, int ringno)
{
struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[ringno];
/* If the ring is active, flag it */
if (phba->sli.ring[ringno].cmdringaddr) {
if (phba->sli.ring[ringno].flag & LPFC_STOP_IOCB_MBX) {
phba->sli.ring[ringno].flag &= ~LPFC_STOP_IOCB_MBX;
/*
* Force update of the local copy of cmdGetInx
*/
phba->sli.ring[ringno].local_getidx
= le32_to_cpu(pgp->cmdGetInx);
spin_lock_irq(phba->host->host_lock);
lpfc_sli_resume_iocb(phba, &phba->sli.ring[ringno]);
spin_unlock_irq(phba->host->host_lock);
}
}
}
static int
lpfc_sli_chk_mbx_command(uint8_t mbxCommand)
{
uint8_t ret;
switch (mbxCommand) {
case MBX_LOAD_SM:
case MBX_READ_NV:
case MBX_WRITE_NV:
case MBX_RUN_BIU_DIAG:
case MBX_INIT_LINK:
case MBX_DOWN_LINK:
case MBX_CONFIG_LINK:
case MBX_CONFIG_RING:
case MBX_RESET_RING:
case MBX_READ_CONFIG:
case MBX_READ_RCONFIG:
case MBX_READ_SPARM:
case MBX_READ_STATUS:
case MBX_READ_RPI:
case MBX_READ_XRI:
case MBX_READ_REV:
case MBX_READ_LNK_STAT:
case MBX_REG_LOGIN:
case MBX_UNREG_LOGIN:
case MBX_READ_LA:
case MBX_CLEAR_LA:
case MBX_DUMP_MEMORY:
case MBX_DUMP_CONTEXT:
case MBX_RUN_DIAGS:
case MBX_RESTART:
case MBX_UPDATE_CFG:
case MBX_DOWN_LOAD:
case MBX_DEL_LD_ENTRY:
case MBX_RUN_PROGRAM:
case MBX_SET_MASK:
case MBX_SET_SLIM:
case MBX_UNREG_D_ID:
case MBX_CONFIG_FARP:
case MBX_LOAD_AREA:
case MBX_RUN_BIU_DIAG64:
case MBX_CONFIG_PORT:
case MBX_READ_SPARM64:
case MBX_READ_RPI64:
case MBX_REG_LOGIN64:
case MBX_READ_LA64:
case MBX_FLASH_WR_ULA:
case MBX_SET_DEBUG:
case MBX_LOAD_EXP_ROM:
ret = mbxCommand;
break;
default:
ret = MBX_SHUTDOWN;
break;
}
return (ret);
}
static void
lpfc_sli_wake_mbox_wait(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
{
wait_queue_head_t *pdone_q;
/*
* If pdone_q is empty, the driver thread gave up waiting and
* continued running.
*/
pdone_q = (wait_queue_head_t *) pmboxq->context1;
if (pdone_q)
wake_up_interruptible(pdone_q);
return;
}
void
lpfc_sli_def_mbox_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
{
struct lpfc_dmabuf *mp;
mp = (struct lpfc_dmabuf *) (pmb->context1);
if (mp) {
lpfc_mbuf_free(phba, mp->virt, mp->phys);
kfree(mp);
}
mempool_free( pmb, phba->mbox_mem_pool);
return;
}
int
lpfc_sli_handle_mb_event(struct lpfc_hba * phba)
{
MAILBOX_t *mbox;
MAILBOX_t *pmbox;
LPFC_MBOXQ_t *pmb;
struct lpfc_sli *psli;
int i, rc;
uint32_t process_next;
psli = &phba->sli;
/* We should only get here if we are in SLI2 mode */
if (!(phba->sli.sli_flag & LPFC_SLI2_ACTIVE)) {
return (1);
}
phba->sli.slistat.mbox_event++;
/* Get a Mailbox buffer to setup mailbox commands for callback */
if ((pmb = phba->sli.mbox_active)) {
pmbox = &pmb->mb;
mbox = &phba->slim2p->mbx;
/* First check out the status word */
lpfc_sli_pcimem_bcopy(mbox, pmbox, sizeof (uint32_t));
/* Sanity check to ensure the host owns the mailbox */
if (pmbox->mbxOwner != OWN_HOST) {
/* Lets try for a while */
for (i = 0; i < 10240; i++) {
/* First copy command data */
lpfc_sli_pcimem_bcopy(mbox, pmbox,
sizeof (uint32_t));
if (pmbox->mbxOwner == OWN_HOST)
goto mbout;
}
/* Stray Mailbox Interrupt, mbxCommand <cmd> mbxStatus
<status> */
lpfc_printf_log(phba,
KERN_ERR,
LOG_MBOX | LOG_SLI,
"%d:0304 Stray Mailbox Interrupt "
"mbxCommand x%x mbxStatus x%x\n",
phba->brd_no,
pmbox->mbxCommand,
pmbox->mbxStatus);
spin_lock_irq(phba->host->host_lock);
phba->sli.sli_flag |= LPFC_SLI_MBOX_ACTIVE;
spin_unlock_irq(phba->host->host_lock);
return (1);
}
mbout:
del_timer_sync(&phba->sli.mbox_tmo);
phba->work_hba_events &= ~WORKER_MBOX_TMO;
/*
* It is a fatal error if unknown mbox command completion.
*/
if (lpfc_sli_chk_mbx_command(pmbox->mbxCommand) ==
MBX_SHUTDOWN) {
/* Unknow mailbox command compl */
lpfc_printf_log(phba,
KERN_ERR,
LOG_MBOX | LOG_SLI,
"%d:0323 Unknown Mailbox command %x Cmpl\n",
phba->brd_no,
pmbox->mbxCommand);
phba->hba_state = LPFC_HBA_ERROR;
phba->work_hs = HS_FFER3;
lpfc_handle_eratt(phba);
return (0);
}
phba->sli.mbox_active = NULL;
if (pmbox->mbxStatus) {
phba->sli.slistat.mbox_stat_err++;
if (pmbox->mbxStatus == MBXERR_NO_RESOURCES) {
/* Mbox cmd cmpl error - RETRYing */
lpfc_printf_log(phba,
KERN_INFO,
LOG_MBOX | LOG_SLI,
"%d:0305 Mbox cmd cmpl error - "
"RETRYing Data: x%x x%x x%x x%x\n",
phba->brd_no,
pmbox->mbxCommand,
pmbox->mbxStatus,
pmbox->un.varWords[0],
phba->hba_state);
pmbox->mbxStatus = 0;
pmbox->mbxOwner = OWN_HOST;
spin_lock_irq(phba->host->host_lock);
phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
spin_unlock_irq(phba->host->host_lock);
rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
if (rc == MBX_SUCCESS)
return (0);
}
}
/* Mailbox cmd <cmd> Cmpl <cmpl> */
lpfc_printf_log(phba,
KERN_INFO,
LOG_MBOX | LOG_SLI,
"%d:0307 Mailbox cmd x%x Cmpl x%p "
"Data: x%x x%x x%x x%x x%x x%x x%x x%x x%x\n",
phba->brd_no,
pmbox->mbxCommand,
pmb->mbox_cmpl,
*((uint32_t *) pmbox),
pmbox->un.varWords[0],
pmbox->un.varWords[1],
pmbox->un.varWords[2],
pmbox->un.varWords[3],
pmbox->un.varWords[4],
pmbox->un.varWords[5],
pmbox->un.varWords[6],
pmbox->un.varWords[7]);
if (pmb->mbox_cmpl) {
lpfc_sli_pcimem_bcopy(mbox, pmbox, MAILBOX_CMD_SIZE);
pmb->mbox_cmpl(phba,pmb);
}
}
do {
process_next = 0; /* by default don't loop */
spin_lock_irq(phba->host->host_lock);
phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
/* Process next mailbox command if there is one */
if ((pmb = lpfc_mbox_get(phba))) {
spin_unlock_irq(phba->host->host_lock);
rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
if (rc == MBX_NOT_FINISHED) {
pmb->mb.mbxStatus = MBX_NOT_FINISHED;
pmb->mbox_cmpl(phba,pmb);
process_next = 1;
continue; /* loop back */
}
} else {
spin_unlock_irq(phba->host->host_lock);
/* Turn on IOCB processing */
for (i = 0; i < phba->sli.num_rings; i++) {
lpfc_sli_turn_on_ring(phba, i);
}
/* Free any lpfc_dmabuf's waiting for mbox cmd cmpls */
while (!list_empty(&phba->freebufList)) {
struct lpfc_dmabuf *mp;
mp = NULL;
list_remove_head((&phba->freebufList),
mp,
struct lpfc_dmabuf,
list);
if (mp) {
lpfc_mbuf_free(phba, mp->virt,
mp->phys);
kfree(mp);
}
}
}
} while (process_next);
return (0);
}
static int
lpfc_sli_process_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
struct lpfc_iocbq *saveq)
{
IOCB_t * irsp;
WORD5 * w5p;
uint32_t Rctl, Type;
uint32_t match, i;
match = 0;
irsp = &(saveq->iocb);
if ((irsp->ulpCommand == CMD_RCV_ELS_REQ64_CX)
|| (irsp->ulpCommand == CMD_RCV_ELS_REQ_CX)) {
Rctl = FC_ELS_REQ;
Type = FC_ELS_DATA;
} else {
w5p =
(WORD5 *) & (saveq->iocb.un.
ulpWord[5]);
Rctl = w5p->hcsw.Rctl;
Type = w5p->hcsw.Type;
/* Firmware Workaround */
if ((Rctl == 0) && (pring->ringno == LPFC_ELS_RING) &&
(irsp->ulpCommand == CMD_RCV_SEQUENCE64_CX)) {
Rctl = FC_ELS_REQ;
Type = FC_ELS_DATA;
w5p->hcsw.Rctl = Rctl;
w5p->hcsw.Type = Type;
}
}
/* unSolicited Responses */
if (pring->prt[0].profile) {
(pring->prt[0].lpfc_sli_rcv_unsol_event) (phba, pring, saveq);
match = 1;
} else {
/* We must search, based on rctl / type
for the right routine */
for (i = 0; i < pring->num_mask;
i++) {
if ((pring->prt[i].rctl ==
Rctl)
&& (pring->prt[i].
type == Type)) {
(pring->prt[i].lpfc_sli_rcv_unsol_event)
(phba, pring, saveq);
match = 1;
break;
}
}
}
if (match == 0) {
/* Unexpected Rctl / Type received */
/* Ring <ringno> handler: unexpected
Rctl <Rctl> Type <Type> received */
lpfc_printf_log(phba,
KERN_WARNING,
LOG_SLI,
"%d:0313 Ring %d handler: unexpected Rctl x%x "
"Type x%x received \n",
phba->brd_no,
pring->ringno,
Rctl,
Type);
}
return(1);
}
static struct lpfc_iocbq *
lpfc_sli_txcmpl_ring_search_slow(struct lpfc_sli_ring * pring,
struct lpfc_iocbq * prspiocb)
{
IOCB_t *icmd = NULL;
IOCB_t *irsp = NULL;
struct lpfc_iocbq *cmd_iocb;
struct lpfc_iocbq *iocb, *next_iocb;
uint16_t iotag;
irsp = &prspiocb->iocb;
iotag = irsp->ulpIoTag;
cmd_iocb = NULL;
/* Search through txcmpl from the begining */
list_for_each_entry_safe(iocb, next_iocb, &(pring->txcmplq), list) {
icmd = &iocb->iocb;
if (iotag == icmd->ulpIoTag) {
/* Found a match. */
cmd_iocb = iocb;
list_del(&iocb->list);
pring->txcmplq_cnt--;
break;
}
}
return (cmd_iocb);
}
static struct lpfc_iocbq *
lpfc_sli_txcmpl_ring_iotag_lookup(struct lpfc_hba * phba,
struct lpfc_sli_ring * pring,
struct lpfc_iocbq * prspiocb)
{
IOCB_t *irsp = NULL;
struct lpfc_iocbq *cmd_iocb = NULL;
uint16_t iotag;
if (unlikely(pring->fast_lookup == NULL))
return NULL;
/* Use fast lookup based on iotag for completion */
irsp = &prspiocb->iocb;
iotag = irsp->ulpIoTag;
if (iotag < pring->fast_iotag) {
cmd_iocb = *(pring->fast_lookup + iotag);
*(pring->fast_lookup + iotag) = NULL;
if (cmd_iocb) {
list_del(&cmd_iocb->list);
pring->txcmplq_cnt--;
return cmd_iocb;
} else {
/*
* This is clearly an error. A ring that uses iotags
* should never have a interrupt for a completion that
* is not on the ring. Return NULL and log a error.
*/
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"%d:0327 Rsp ring %d error - command "
"completion for iotag x%x not found\n",
phba->brd_no, pring->ringno, iotag);
return NULL;
}
}
/*
* Rsp ring <ringno> get: iotag <iotag> greater then
* configured max <fast_iotag> wd0 <irsp>. This is an
* error. Just return NULL.
*/
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"%d:0317 Rsp ring %d get: iotag x%x greater then "
"configured max x%x wd0 x%x\n",
phba->brd_no, pring->ringno, iotag, pring->fast_iotag,
*(((uint32_t *) irsp) + 7));
return NULL;
}
static int
lpfc_sli_process_sol_iocb(struct lpfc_hba * phba, struct lpfc_sli_ring * pring,
struct lpfc_iocbq *saveq)
{
struct lpfc_iocbq * cmdiocbp;
int rc = 1;
unsigned long iflag;
/* Based on the iotag field, get the cmd IOCB from the txcmplq */
spin_lock_irqsave(phba->host->host_lock, iflag);
cmdiocbp = lpfc_sli_txcmpl_ring_search_slow(pring, saveq);
if (cmdiocbp) {
if (cmdiocbp->iocb_cmpl) {
/*
* Post all ELS completions to the worker thread.
* All other are passed to the completion callback.
*/
if (pring->ringno == LPFC_ELS_RING) {
spin_unlock_irqrestore(phba->host->host_lock,
iflag);
(cmdiocbp->iocb_cmpl) (phba, cmdiocbp, saveq);
spin_lock_irqsave(phba->host->host_lock, iflag);
}
else {
if (cmdiocbp->iocb_flag & LPFC_IO_POLL)
rc = 0;
spin_unlock_irqrestore(phba->host->host_lock,
iflag);
(cmdiocbp->iocb_cmpl) (phba, cmdiocbp, saveq);
spin_lock_irqsave(phba->host->host_lock, iflag);
}
} else {
list_add_tail(&cmdiocbp->list, &phba->lpfc_iocb_list);
}
} else {
/*
* Unknown initiating command based on the response iotag.
* This could be the case on the ELS ring because of
* lpfc_els_abort().
*/
if (pring->ringno != LPFC_ELS_RING) {
/*
* Ring <ringno> handler: unexpected completion IoTag
* <IoTag>
*/
lpfc_printf_log(phba,
KERN_WARNING,
LOG_SLI,
"%d:0322 Ring %d handler: unexpected "
"completion IoTag x%x Data: x%x x%x x%x x%x\n",
phba->brd_no,
pring->ringno,
saveq->iocb.ulpIoTag,
saveq->iocb.ulpStatus,
saveq->iocb.un.ulpWord[4],
saveq->iocb.ulpCommand,
saveq->iocb.ulpContext);
}
}
spin_unlock_irqrestore(phba->host->host_lock, iflag);
return rc;
}
/*
* This routine presumes LPFC_FCP_RING handling and doesn't bother
* to check it explicitly.
*/
static int
lpfc_sli_handle_fast_ring_event(struct lpfc_hba * phba,
struct lpfc_sli_ring * pring, uint32_t mask)
{
struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno];
IOCB_t *irsp = NULL;
IOCB_t *entry = NULL;
struct lpfc_iocbq *cmdiocbq = NULL;
struct lpfc_iocbq rspiocbq;
uint32_t status;
uint32_t portRspPut, portRspMax;
int rc = 1;
lpfc_iocb_type type;
unsigned long iflag;
uint32_t rsp_cmpl = 0;
void __iomem *to_slim;
spin_lock_irqsave(phba->host->host_lock, iflag);
pring->stats.iocb_event++;
/*
* The next available response entry should never exceed the maximum
* entries. If it does, treat it as an adapter hardware error.
*/
portRspMax = pring->numRiocb;
portRspPut = le32_to_cpu(pgp->rspPutInx);
if (unlikely(portRspPut >= portRspMax)) {
/*
* Ring <ringno> handler: portRspPut <portRspPut> is bigger then
* rsp ring <portRspMax>
*/
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"%d:0312 Ring %d handler: portRspPut %d "
"is bigger then rsp ring %d\n",
phba->brd_no, pring->ringno, portRspPut,
portRspMax);
phba->hba_state = LPFC_HBA_ERROR;
/* All error attention handlers are posted to worker thread */
phba->work_ha |= HA_ERATT;
phba->work_hs = HS_FFER3;
if (phba->work_wait)
wake_up(phba->work_wait);
spin_unlock_irqrestore(phba->host->host_lock, iflag);
return 1;
}
rmb();
while (pring->rspidx != portRspPut) {
/*
* Fetch an entry off the ring and copy it into a local data
* structure. The copy involves a byte-swap since the
* network byte order and pci byte orders are different.
*/
entry = (IOCB_t *) IOCB_ENTRY(pring->rspringaddr, pring->rspidx);
lpfc_sli_pcimem_bcopy((uint32_t *) entry,
(uint32_t *) &rspiocbq.iocb,
sizeof (IOCB_t));
irsp = &rspiocbq.iocb;
type = lpfc_sli_iocb_cmd_type(irsp->ulpCommand & CMD_IOCB_MASK);
pring->stats.iocb_rsp++;
rsp_cmpl++;
if (unlikely(irsp->ulpStatus)) {
/* Rsp ring <ringno> error: IOCB */
lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
"%d:0326 Rsp Ring %d error: IOCB Data: "
"x%x x%x x%x x%x x%x x%x x%x x%x\n",
phba->brd_no, pring->ringno,
irsp->un.ulpWord[0], irsp->un.ulpWord[1],
irsp->un.ulpWord[2], irsp->un.ulpWord[3],
irsp->un.ulpWord[4], irsp->un.ulpWord[5],
*(((uint32_t *) irsp) + 6),
*(((uint32_t *) irsp) + 7));
}
switch (type) {
case LPFC_ABORT_IOCB:
case LPFC_SOL_IOCB:
/*
* Idle exchange closed via ABTS from port. No iocb
* resources need to be recovered.
*/
if (unlikely(irsp->ulpCommand == CMD_XRI_ABORTED_CX)) {
printk(KERN_INFO "%s: IOCB cmd 0x%x processed. "
"Skipping completion\n", __FUNCTION__,
irsp->ulpCommand);
break;
}
cmdiocbq = lpfc_sli_txcmpl_ring_iotag_lookup(phba,
pring,
&rspiocbq);
if ((cmdiocbq) && (cmdiocbq->iocb_cmpl)) {
spin_unlock_irqrestore(
phba->host->host_lock, iflag);
(cmdiocbq->iocb_cmpl)(phba, cmdiocbq,
&rspiocbq);
spin_lock_irqsave(phba->host->host_lock,
iflag);
}
break;
default:
if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
char adaptermsg[LPFC_MAX_ADPTMSG];
memset(adaptermsg, 0, LPFC_MAX_ADPTMSG);
memcpy(&adaptermsg[0], (uint8_t *) irsp,
MAX_MSG_DATA);
dev_warn(&((phba->pcidev)->dev), "lpfc%d: %s",
phba->brd_no, adaptermsg);
} else {
/* Unknown IOCB command */
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"%d:0321 Unknown IOCB command "
"Data: x%x, x%x x%x x%x x%x\n",
phba->brd_no, type, irsp->ulpCommand,
irsp->ulpStatus, irsp->ulpIoTag,
irsp->ulpContext);
}
break;
}
/*
* The response IOCB has been processed. Update the ring
* pointer in SLIM. If the port response put pointer has not
* been updated, sync the pgp->rspPutInx and fetch the new port
* response put pointer.
*/
if (++pring->rspidx >= portRspMax)
pring->rspidx = 0;
to_slim = phba->MBslimaddr +
(SLIMOFF + (pring->ringno * 2) + 1) * 4;
writeb(pring->rspidx, to_slim);
if (pring->rspidx == portRspPut)
portRspPut = le32_to_cpu(pgp->rspPutInx);
}
if ((rsp_cmpl > 0) && (mask & HA_R0RE_REQ)) {
pring->stats.iocb_rsp_full++;
status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4));
writel(status, phba->CAregaddr);
readl(phba->CAregaddr);
}
if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
pring->stats.iocb_cmd_empty++;
/* Force update of the local copy of cmdGetInx */
pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
lpfc_sli_resume_iocb(phba, pring);
if ((pring->lpfc_sli_cmd_available))
(pring->lpfc_sli_cmd_available) (phba, pring);
}
spin_unlock_irqrestore(phba->host->host_lock, iflag);
return rc;
}
int
lpfc_sli_handle_slow_ring_event(struct lpfc_hba * phba,
struct lpfc_sli_ring * pring, uint32_t mask)
{
IOCB_t *entry;
IOCB_t *irsp = NULL;
struct lpfc_iocbq *rspiocbp = NULL;
struct lpfc_iocbq *next_iocb;
struct lpfc_iocbq *cmdiocbp;
struct lpfc_iocbq *saveq;
struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list;
struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno];
uint8_t iocb_cmd_type;
lpfc_iocb_type type;
uint32_t status, free_saveq;
uint32_t portRspPut, portRspMax;
int rc = 1;
unsigned long iflag;
void __iomem *to_slim;
spin_lock_irqsave(phba->host->host_lock, iflag);
pring->stats.iocb_event++;
/*
* The next available response entry should never exceed the maximum
* entries. If it does, treat it as an adapter hardware error.
*/
portRspMax = pring->numRiocb;
portRspPut = le32_to_cpu(pgp->rspPutInx);
if (portRspPut >= portRspMax) {
/*
* Ring <ringno> handler: portRspPut <portRspPut> is bigger then
* rsp ring <portRspMax>
*/
lpfc_printf_log(phba,
KERN_ERR,
LOG_SLI,
"%d:0312 Ring %d handler: portRspPut %d "
"is bigger then rsp ring %d\n",
phba->brd_no,
pring->ringno, portRspPut, portRspMax);
phba->hba_state = LPFC_HBA_ERROR;
spin_unlock_irqrestore(phba->host->host_lock, iflag);
phba->work_hs = HS_FFER3;
lpfc_handle_eratt(phba);
return 1;
}
rmb();
lpfc_iocb_list = &phba->lpfc_iocb_list;
while (pring->rspidx != portRspPut) {
/*
* Build a completion list and call the appropriate handler.
* The process is to get the next available response iocb, get
* a free iocb from the list, copy the response data into the
* free iocb, insert to the continuation list, and update the
* next response index to slim. This process makes response
* iocb's in the ring available to DMA as fast as possible but
* pays a penalty for a copy operation. Since the iocb is
* only 32 bytes, this penalty is considered small relative to
* the PCI reads for register values and a slim write. When
* the ulpLe field is set, the entire Command has been
* received.
*/
entry = IOCB_ENTRY(pring->rspringaddr, pring->rspidx);
list_remove_head(lpfc_iocb_list, rspiocbp, struct lpfc_iocbq,
list);
if (rspiocbp == NULL) {
printk(KERN_ERR "%s: out of buffers! Failing "
"completion.\n", __FUNCTION__);
break;
}
lpfc_sli_pcimem_bcopy(entry, &rspiocbp->iocb, sizeof (IOCB_t));
irsp = &rspiocbp->iocb;
if (++pring->rspidx >= portRspMax)
pring->rspidx = 0;
to_slim = phba->MBslimaddr + (SLIMOFF + (pring->ringno * 2)
+ 1) * 4;
writeb(pring->rspidx, to_slim);
if (list_empty(&(pring->iocb_continueq))) {
list_add(&rspiocbp->list, &(pring->iocb_continueq));
} else {
list_add_tail(&rspiocbp->list,
&(pring->iocb_continueq));
}
pring->iocb_continueq_cnt++;
if (irsp->ulpLe) {
/*
* By default, the driver expects to free all resources
* associated with this iocb completion.
*/
free_saveq = 1;
saveq = list_get_first(&pring->iocb_continueq,
struct lpfc_iocbq, list);
irsp = &(saveq->iocb);
list_del_init(&pring->iocb_continueq);
pring->iocb_continueq_cnt = 0;
pring->stats.iocb_rsp++;
if (irsp->ulpStatus) {
/* Rsp ring <ringno> error: IOCB */
lpfc_printf_log(phba,
KERN_WARNING,
LOG_SLI,
"%d:0328 Rsp Ring %d error: IOCB Data: "
"x%x x%x x%x x%x x%x x%x x%x x%x\n",
phba->brd_no,
pring->ringno,
irsp->un.ulpWord[0],
irsp->un.ulpWord[1],
irsp->un.ulpWord[2],
irsp->un.ulpWord[3],
irsp->un.ulpWord[4],
irsp->un.ulpWord[5],
*(((uint32_t *) irsp) + 6),
*(((uint32_t *) irsp) + 7));
}
/*
* Fetch the IOCB command type and call the correct
* completion routine. Solicited and Unsolicited
* IOCBs on the ELS ring get freed back to the
* lpfc_iocb_list by the discovery kernel thread.
*/
iocb_cmd_type = irsp->ulpCommand & CMD_IOCB_MASK;
type = lpfc_sli_iocb_cmd_type(iocb_cmd_type);
if (type == LPFC_SOL_IOCB) {
spin_unlock_irqrestore(phba->host->host_lock,
iflag);
rc = lpfc_sli_process_sol_iocb(phba, pring,
saveq);
spin_lock_irqsave(phba->host->host_lock, iflag);
} else if (type == LPFC_UNSOL_IOCB) {
spin_unlock_irqrestore(phba->host->host_lock,
iflag);
rc = lpfc_sli_process_unsol_iocb(phba, pring,
saveq);
spin_lock_irqsave(phba->host->host_lock, iflag);
} else if (type == LPFC_ABORT_IOCB) {
if ((irsp->ulpCommand != CMD_XRI_ABORTED_CX) &&
((cmdiocbp =
lpfc_sli_txcmpl_ring_search_slow(pring,
saveq)))) {
/* Call the specified completion
routine */
if (cmdiocbp->iocb_cmpl) {
spin_unlock_irqrestore(
phba->host->host_lock,
iflag);
(cmdiocbp->iocb_cmpl) (phba,
cmdiocbp, saveq);
spin_lock_irqsave(
phba->host->host_lock,
iflag);
} else {
list_add_tail(&cmdiocbp->list,
lpfc_iocb_list);
}
}
} else if (type == LPFC_UNKNOWN_IOCB) {
if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
char adaptermsg[LPFC_MAX_ADPTMSG];
memset(adaptermsg, 0,
LPFC_MAX_ADPTMSG);
memcpy(&adaptermsg[0], (uint8_t *) irsp,
MAX_MSG_DATA);
dev_warn(&((phba->pcidev)->dev),
"lpfc%d: %s",
phba->brd_no, adaptermsg);
} else {
/* Unknown IOCB command */
lpfc_printf_log(phba,
KERN_ERR,
LOG_SLI,
"%d:0321 Unknown IOCB command "
"Data: x%x x%x x%x x%x\n",
phba->brd_no,
irsp->ulpCommand,
irsp->ulpStatus,
irsp->ulpIoTag,
irsp->ulpContext);
}
}
if (free_saveq) {
if (!list_empty(&saveq->list)) {
list_for_each_entry_safe(rspiocbp,
next_iocb,
&saveq->list,
list) {
list_add_tail(&rspiocbp->list,
lpfc_iocb_list);
}
}
list_add_tail(&saveq->list, lpfc_iocb_list);
}
}
/*
* If the port response put pointer has not been updated, sync
* the pgp->rspPutInx in the MAILBOX_tand fetch the new port
* response put pointer.
*/
if (pring->rspidx == portRspPut) {
portRspPut = le32_to_cpu(pgp->rspPutInx);
}
} /* while (pring->rspidx != portRspPut) */
if ((rspiocbp != 0) && (mask & HA_R0RE_REQ)) {
/* At least one response entry has been freed */
pring->stats.iocb_rsp_full++;
/* SET RxRE_RSP in Chip Att register */
status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4));
writel(status, phba->CAregaddr);
readl(phba->CAregaddr); /* flush */
}
if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
pring->stats.iocb_cmd_empty++;
/* Force update of the local copy of cmdGetInx */
pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
lpfc_sli_resume_iocb(phba, pring);
if ((pring->lpfc_sli_cmd_available))
(pring->lpfc_sli_cmd_available) (phba, pring);
}
spin_unlock_irqrestore(phba->host->host_lock, iflag);
return rc;
}
int
lpfc_sli_abort_iocb_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
{
struct lpfc_iocbq *iocb, *next_iocb;
IOCB_t *icmd = NULL, *cmd = NULL;
int errcnt;
uint16_t iotag;
errcnt = 0;
/* Error everything on txq and txcmplq
* First do the txq.
*/
spin_lock_irq(phba->host->host_lock);
list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
list_del_init(&iocb->list);
if (iocb->iocb_cmpl) {
icmd = &iocb->iocb;
icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
spin_unlock_irq(phba->host->host_lock);
(iocb->iocb_cmpl) (phba, iocb, iocb);
spin_lock_irq(phba->host->host_lock);
} else {
list_add_tail(&iocb->list, &phba->lpfc_iocb_list);
}
}
pring->txq_cnt = 0;
INIT_LIST_HEAD(&(pring->txq));
/* Next issue ABTS for everything on the txcmplq */
list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
cmd = &iocb->iocb;
/*
* Imediate abort of IOCB, clear fast_lookup entry,
* if any, deque and call compl
*/
iotag = cmd->ulpIoTag;
if (iotag && pring->fast_lookup &&
(iotag < pring->fast_iotag))
pring->fast_lookup[iotag] = NULL;
list_del_init(&iocb->list);
pring->txcmplq_cnt--;
if (iocb->iocb_cmpl) {
cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
spin_unlock_irq(phba->host->host_lock);
(iocb->iocb_cmpl) (phba, iocb, iocb);
spin_lock_irq(phba->host->host_lock);
} else {
list_add_tail(&iocb->list, &phba->lpfc_iocb_list);
}
}
INIT_LIST_HEAD(&pring->txcmplq);
pring->txcmplq_cnt = 0;
spin_unlock_irq(phba->host->host_lock);
return errcnt;
}
/******************************************************************************
* lpfc_sli_send_reset
*
* Note: After returning from this function, the HBA cannot be accessed for
* 1 ms. Since we do not wish to delay in interrupt context, it is the
* responsibility of the caller to perform the mdelay(1) and flush via readl().
******************************************************************************/
static int
lpfc_sli_send_reset(struct lpfc_hba * phba, uint16_t skip_post)
{
MAILBOX_t *swpmb;
volatile uint32_t word0;
void __iomem *to_slim;
unsigned long flags = 0;
spin_lock_irqsave(phba->host->host_lock, flags);
/* A board reset must use REAL SLIM. */
phba->sli.sli_flag &= ~LPFC_SLI2_ACTIVE;
word0 = 0;
swpmb = (MAILBOX_t *) & word0;
swpmb->mbxCommand = MBX_RESTART;
swpmb->mbxHc = 1;
to_slim = phba->MBslimaddr;
writel(*(uint32_t *) swpmb, to_slim);
readl(to_slim); /* flush */
/* Only skip post after fc_ffinit is completed */
if (skip_post) {
word0 = 1; /* This is really setting up word1 */
} else {
word0 = 0; /* This is really setting up word1 */
}
to_slim = phba->MBslimaddr + sizeof (uint32_t);
writel(*(uint32_t *) swpmb, to_slim);
readl(to_slim); /* flush */
/* Turn off parity checking and serr during the physical reset */
pci_read_config_word(phba->pcidev, PCI_COMMAND, &phba->pci_cfg_value);
pci_write_config_word(phba->pcidev, PCI_COMMAND,
(phba->pci_cfg_value &
~(PCI_COMMAND_PARITY | PCI_COMMAND_SERR)));
writel(HC_INITFF, phba->HCregaddr);
phba->hba_state = LPFC_INIT_START;
spin_unlock_irqrestore(phba->host->host_lock, flags);
return 0;
}
static int
lpfc_sli_brdreset(struct lpfc_hba * phba, uint16_t skip_post)
{
struct lpfc_sli_ring *pring;
int i;
struct lpfc_dmabuf *mp, *next_mp;
unsigned long flags = 0;
lpfc_sli_send_reset(phba, skip_post);
mdelay(1);
spin_lock_irqsave(phba->host->host_lock, flags);
/* Risk the write on flush case ie no delay after the readl */
readl(phba->HCregaddr); /* flush */
/* Now toggle INITFF bit set by lpfc_sli_send_reset */
writel(0, phba->HCregaddr);
readl(phba->HCregaddr); /* flush */
/* Restore PCI cmd register */
pci_write_config_word(phba->pcidev, PCI_COMMAND, phba->pci_cfg_value);
/* perform board reset */
phba->fc_eventTag = 0;
phba->fc_myDID = 0;
phba->fc_prevDID = Mask_DID;
/* Reset HBA */
lpfc_printf_log(phba,
KERN_INFO,
LOG_SLI,
"%d:0325 Reset HBA Data: x%x x%x x%x\n",
phba->brd_no,
phba->hba_state,
phba->sli.sli_flag,
skip_post);
/* Initialize relevant SLI info */
for (i = 0; i < phba->sli.num_rings; i++) {
pring = &phba->sli.ring[i];
pring->flag = 0;
pring->rspidx = 0;
pring->next_cmdidx = 0;
pring->local_getidx = 0;
pring->cmdidx = 0;
pring->missbufcnt = 0;
}
spin_unlock_irqrestore(phba->host->host_lock, flags);
if (skip_post) {
mdelay(100);
} else {
mdelay(2000);
}
spin_lock_irqsave(phba->host->host_lock, flags);
/* Cleanup preposted buffers on the ELS ring */
pring = &phba->sli.ring[LPFC_ELS_RING];
list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
list_del(&mp->list);
pring->postbufq_cnt--;
lpfc_mbuf_free(phba, mp->virt, mp->phys);
kfree(mp);
}
spin_unlock_irqrestore(phba->host->host_lock, flags);
for (i = 0; i < phba->sli.num_rings; i++)
lpfc_sli_abort_iocb_ring(phba, &phba->sli.ring[i]);
return 0;
}
static int
lpfc_sli_chipset_init(struct lpfc_hba *phba)
{
uint32_t status, i = 0;
/* Read the HBA Host Status Register */
status = readl(phba->HSregaddr);
/* Check status register to see what current state is */
i = 0;
while ((status & (HS_FFRDY | HS_MBRDY)) != (HS_FFRDY | HS_MBRDY)) {
/* Check every 100ms for 5 retries, then every 500ms for 5, then
* every 2.5 sec for 5, then reset board and every 2.5 sec for
* 4.
*/
if (i++ >= 20) {
/* Adapter failed to init, timeout, status reg
<status> */
lpfc_printf_log(phba,
KERN_ERR,
LOG_INIT,
"%d:0436 Adapter failed to init, "
"timeout, status reg x%x\n",
phba->brd_no,
status);
phba->hba_state = LPFC_HBA_ERROR;
return -ETIMEDOUT;
}
/* Check to see if any errors occurred during init */
if (status & HS_FFERM) {
/* ERROR: During chipset initialization */
/* Adapter failed to init, chipset, status reg
<status> */
lpfc_printf_log(phba,
KERN_ERR,
LOG_INIT,
"%d:0437 Adapter failed to init, "
"chipset, status reg x%x\n",
phba->brd_no,
status);
phba->hba_state = LPFC_HBA_ERROR;
return -EIO;
}
if (i <= 5) {
msleep(10);
} else if (i <= 10) {
msleep(500);
} else {
msleep(2500);
}
if (i == 15) {
lpfc_sli_brdreset(phba, 0);
}
/* Read the HBA Host Status Register */
status = readl(phba->HSregaddr);
}
/* Check to see if any errors occurred during init */
if (status & HS_FFERM) {
/* ERROR: During chipset initialization */
/* Adapter failed to init, chipset, status reg <status> */
lpfc_printf_log(phba,
KERN_ERR,
LOG_INIT,
"%d:0438 Adapter failed to init, chipset, "
"status reg x%x\n",
phba->brd_no,
status);
phba->hba_state = LPFC_HBA_ERROR;
return -EIO;
}
/* Clear all interrupt enable conditions */
writel(0, phba->HCregaddr);
readl(phba->HCregaddr); /* flush */
/* setup host attn register */
writel(0xffffffff, phba->HAregaddr);
readl(phba->HAregaddr); /* flush */
return 0;
}
int
lpfc_sli_hba_setup(struct lpfc_hba * phba)
{
LPFC_MBOXQ_t *pmb;
uint32_t resetcount = 0, rc = 0, done = 0;
pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!pmb) {
phba->hba_state = LPFC_HBA_ERROR;
return -ENOMEM;
}
while (resetcount < 2 && !done) {
phba->hba_state = 0;
lpfc_sli_brdreset(phba, 0);
msleep(2500);
rc = lpfc_sli_chipset_init(phba);
if (rc)
break;
resetcount++;
/* Call pre CONFIG_PORT mailbox command initialization. A value of 0
* means the call was successful. Any other nonzero value is a failure,
* but if ERESTART is returned, the driver may reset the HBA and try
* again.
*/
rc = lpfc_config_port_prep(phba);
if (rc == -ERESTART) {
phba->hba_state = 0;
continue;
} else if (rc) {
break;
}
phba->hba_state = LPFC_INIT_MBX_CMDS;
lpfc_config_port(phba, pmb);
rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
if (rc == MBX_SUCCESS)
done = 1;
else {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"%d:0442 Adapter failed to init, mbxCmd x%x "
"CONFIG_PORT, mbxStatus x%x Data: x%x\n",
phba->brd_no, pmb->mb.mbxCommand,
pmb->mb.mbxStatus, 0);
phba->sli.sli_flag &= ~LPFC_SLI2_ACTIVE;
}
}
if (!done)
goto lpfc_sli_hba_setup_error;
rc = lpfc_sli_ring_map(phba, pmb);
if (rc)
goto lpfc_sli_hba_setup_error;
phba->sli.sli_flag |= LPFC_PROCESS_LA;
rc = lpfc_config_port_post(phba);
if (rc)
goto lpfc_sli_hba_setup_error;
goto lpfc_sli_hba_setup_exit;
lpfc_sli_hba_setup_error:
phba->hba_state = LPFC_HBA_ERROR;
lpfc_sli_hba_setup_exit:
mempool_free(pmb, phba->mbox_mem_pool);
return rc;
}
static void
lpfc_mbox_abort(struct lpfc_hba * phba)
{
LPFC_MBOXQ_t *pmbox;
MAILBOX_t *mb;
if (phba->sli.mbox_active) {
del_timer_sync(&phba->sli.mbox_tmo);
phba->work_hba_events &= ~WORKER_MBOX_TMO;
pmbox = phba->sli.mbox_active;
mb = &pmbox->mb;
phba->sli.mbox_active = NULL;
if (pmbox->mbox_cmpl) {
mb->mbxStatus = MBX_NOT_FINISHED;
(pmbox->mbox_cmpl) (phba, pmbox);
}
phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
}
/* Abort all the non active mailbox commands. */
spin_lock_irq(phba->host->host_lock);
pmbox = lpfc_mbox_get(phba);
while (pmbox) {
mb = &pmbox->mb;
if (pmbox->mbox_cmpl) {
mb->mbxStatus = MBX_NOT_FINISHED;
spin_unlock_irq(phba->host->host_lock);
(pmbox->mbox_cmpl) (phba, pmbox);
spin_lock_irq(phba->host->host_lock);
}
pmbox = lpfc_mbox_get(phba);
}
spin_unlock_irq(phba->host->host_lock);
return;
}
/*! lpfc_mbox_timeout
*
* \pre
* \post
* \param hba Pointer to per struct lpfc_hba structure
* \param l1 Pointer to the driver's mailbox queue.
* \return
* void
*
* \b Description:
*
* This routine handles mailbox timeout events at timer interrupt context.
*/
void
lpfc_mbox_timeout(unsigned long ptr)
{
struct lpfc_hba *phba;
unsigned long iflag;
phba = (struct lpfc_hba *)ptr;
spin_lock_irqsave(phba->host->host_lock, iflag);
if (!(phba->work_hba_events & WORKER_MBOX_TMO)) {
phba->work_hba_events |= WORKER_MBOX_TMO;
if (phba->work_wait)
wake_up(phba->work_wait);
}
spin_unlock_irqrestore(phba->host->host_lock, iflag);
}
void
lpfc_mbox_timeout_handler(struct lpfc_hba *phba)
{
LPFC_MBOXQ_t *pmbox;
MAILBOX_t *mb;
spin_lock_irq(phba->host->host_lock);
if (!(phba->work_hba_events & WORKER_MBOX_TMO)) {
spin_unlock_irq(phba->host->host_lock);
return;
}
phba->work_hba_events &= ~WORKER_MBOX_TMO;
pmbox = phba->sli.mbox_active;
mb = &pmbox->mb;
/* Mbox cmd <mbxCommand> timeout */
lpfc_printf_log(phba,
KERN_ERR,
LOG_MBOX | LOG_SLI,
"%d:0310 Mailbox command x%x timeout Data: x%x x%x x%p\n",
phba->brd_no,
mb->mbxCommand,
phba->hba_state,
phba->sli.sli_flag,
phba->sli.mbox_active);
phba->sli.mbox_active = NULL;
if (pmbox->mbox_cmpl) {
mb->mbxStatus = MBX_NOT_FINISHED;
spin_unlock_irq(phba->host->host_lock);
(pmbox->mbox_cmpl) (phba, pmbox);
spin_lock_irq(phba->host->host_lock);
}
phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
spin_unlock_irq(phba->host->host_lock);
lpfc_mbox_abort(phba);
return;
}
int
lpfc_sli_issue_mbox(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmbox, uint32_t flag)
{
MAILBOX_t *mb;
struct lpfc_sli *psli;
uint32_t status, evtctr;
uint32_t ha_copy;
int i;
unsigned long drvr_flag = 0;
volatile uint32_t word0, ldata;
void __iomem *to_slim;
psli = &phba->sli;
spin_lock_irqsave(phba->host->host_lock, drvr_flag);
mb = &pmbox->mb;
status = MBX_SUCCESS;
if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) {
/* Polling for a mbox command when another one is already active
* is not allowed in SLI. Also, the driver must have established
* SLI2 mode to queue and process multiple mbox commands.
*/
if (flag & MBX_POLL) {
spin_unlock_irqrestore(phba->host->host_lock,
drvr_flag);
/* Mbox command <mbxCommand> cannot issue */
LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag)
return (MBX_NOT_FINISHED);
}
if (!(psli->sli_flag & LPFC_SLI2_ACTIVE)) {
spin_unlock_irqrestore(phba->host->host_lock,
drvr_flag);
/* Mbox command <mbxCommand> cannot issue */
LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag)
return (MBX_NOT_FINISHED);
}
/* Handle STOP IOCB processing flag. This is only meaningful
* if we are not polling for mbox completion.
*/
if (flag & MBX_STOP_IOCB) {
flag &= ~MBX_STOP_IOCB;
/* Now flag each ring */
for (i = 0; i < psli->num_rings; i++) {
/* If the ring is active, flag it */
if (psli->ring[i].cmdringaddr) {
psli->ring[i].flag |=
LPFC_STOP_IOCB_MBX;
}
}
}
/* Another mailbox command is still being processed, queue this
* command to be processed later.
*/
lpfc_mbox_put(phba, pmbox);
/* Mbox cmd issue - BUSY */
lpfc_printf_log(phba,
KERN_INFO,
LOG_MBOX | LOG_SLI,
"%d:0308 Mbox cmd issue - BUSY Data: x%x x%x x%x x%x\n",
phba->brd_no,
mb->mbxCommand,
phba->hba_state,
psli->sli_flag,
flag);
psli->slistat.mbox_busy++;
spin_unlock_irqrestore(phba->host->host_lock,
drvr_flag);
return (MBX_BUSY);
}
/* Handle STOP IOCB processing flag. This is only meaningful
* if we are not polling for mbox completion.
*/
if (flag & MBX_STOP_IOCB) {
flag &= ~MBX_STOP_IOCB;
if (flag == MBX_NOWAIT) {
/* Now flag each ring */
for (i = 0; i < psli->num_rings; i++) {
/* If the ring is active, flag it */
if (psli->ring[i].cmdringaddr) {
psli->ring[i].flag |=
LPFC_STOP_IOCB_MBX;
}
}
}
}
psli->sli_flag |= LPFC_SLI_MBOX_ACTIVE;
/* If we are not polling, we MUST be in SLI2 mode */
if (flag != MBX_POLL) {
if (!(psli->sli_flag & LPFC_SLI2_ACTIVE)) {
psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
spin_unlock_irqrestore(phba->host->host_lock,
drvr_flag);
/* Mbox command <mbxCommand> cannot issue */
LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag);
return (MBX_NOT_FINISHED);
}
/* timeout active mbox command */
mod_timer(&psli->mbox_tmo, jiffies + HZ * LPFC_MBOX_TMO);
}
/* Mailbox cmd <cmd> issue */
lpfc_printf_log(phba,
KERN_INFO,
LOG_MBOX | LOG_SLI,
"%d:0309 Mailbox cmd x%x issue Data: x%x x%x x%x\n",
phba->brd_no,
mb->mbxCommand,
phba->hba_state,
psli->sli_flag,
flag);
psli->slistat.mbox_cmd++;
evtctr = psli->slistat.mbox_event;
/* next set own bit for the adapter and copy over command word */
mb->mbxOwner = OWN_CHIP;
if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
/* First copy command data to host SLIM area */
lpfc_sli_pcimem_bcopy(mb, &phba->slim2p->mbx, MAILBOX_CMD_SIZE);
} else {
if (mb->mbxCommand == MBX_CONFIG_PORT) {
/* copy command data into host mbox for cmpl */
lpfc_sli_pcimem_bcopy(mb, &phba->slim2p->mbx,
MAILBOX_CMD_SIZE);
}
/* First copy mbox command data to HBA SLIM, skip past first
word */
to_slim = phba->MBslimaddr + sizeof (uint32_t);
lpfc_memcpy_to_slim(to_slim, &mb->un.varWords[0],
MAILBOX_CMD_SIZE - sizeof (uint32_t));
/* Next copy over first word, with mbxOwner set */
ldata = *((volatile uint32_t *)mb);
to_slim = phba->MBslimaddr;
writel(ldata, to_slim);
readl(to_slim); /* flush */
if (mb->mbxCommand == MBX_CONFIG_PORT) {
/* switch over to host mailbox */
psli->sli_flag |= LPFC_SLI2_ACTIVE;
}
}
wmb();
/* interrupt board to doit right away */
writel(CA_MBATT, phba->CAregaddr);
readl(phba->CAregaddr); /* flush */
switch (flag) {
case MBX_NOWAIT:
/* Don't wait for it to finish, just return */
psli->mbox_active = pmbox;
break;
case MBX_POLL:
i = 0;
psli->mbox_active = NULL;
if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
/* First read mbox status word */
word0 = *((volatile uint32_t *)&phba->slim2p->mbx);
word0 = le32_to_cpu(word0);
} else {
/* First read mbox status word */
word0 = readl(phba->MBslimaddr);
}
/* Read the HBA Host Attention Register */
ha_copy = readl(phba->HAregaddr);
/* Wait for command to complete */
while (((word0 & OWN_CHIP) == OWN_CHIP)
|| !(ha_copy & HA_MBATT)) {
if (i++ >= 100) {
psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
spin_unlock_irqrestore(phba->host->host_lock,
drvr_flag);
return (MBX_NOT_FINISHED);
}
/* Check if we took a mbox interrupt while we were
polling */
if (((word0 & OWN_CHIP) != OWN_CHIP)
&& (evtctr != psli->slistat.mbox_event))
break;
spin_unlock_irqrestore(phba->host->host_lock,
drvr_flag);
/* Can be in interrupt context, do not sleep */
/* (or might be called with interrupts disabled) */
mdelay(i);
spin_lock_irqsave(phba->host->host_lock, drvr_flag);
if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
/* First copy command data */
word0 = *((volatile uint32_t *)
&phba->slim2p->mbx);
word0 = le32_to_cpu(word0);
if (mb->mbxCommand == MBX_CONFIG_PORT) {
MAILBOX_t *slimmb;
volatile uint32_t slimword0;
/* Check real SLIM for any errors */
slimword0 = readl(phba->MBslimaddr);
slimmb = (MAILBOX_t *) & slimword0;
if (((slimword0 & OWN_CHIP) != OWN_CHIP)
&& slimmb->mbxStatus) {
psli->sli_flag &=
~LPFC_SLI2_ACTIVE;
word0 = slimword0;
}
}
} else {
/* First copy command data */
word0 = readl(phba->MBslimaddr);
}
/* Read the HBA Host Attention Register */
ha_copy = readl(phba->HAregaddr);
}
if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
/* copy results back to user */
lpfc_sli_pcimem_bcopy(&phba->slim2p->mbx, mb,
MAILBOX_CMD_SIZE);
} else {
/* First copy command data */
lpfc_memcpy_from_slim(mb, phba->MBslimaddr,
MAILBOX_CMD_SIZE);
if ((mb->mbxCommand == MBX_DUMP_MEMORY) &&
pmbox->context2) {
lpfc_memcpy_from_slim((void *)pmbox->context2,
phba->MBslimaddr + DMP_RSP_OFFSET,
mb->un.varDmp.word_cnt);
}
}
writel(HA_MBATT, phba->HAregaddr);
readl(phba->HAregaddr); /* flush */
psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
status = mb->mbxStatus;
}
spin_unlock_irqrestore(phba->host->host_lock, drvr_flag);
return (status);
}
static int
lpfc_sli_ringtx_put(struct lpfc_hba * phba, struct lpfc_sli_ring * pring,
struct lpfc_iocbq * piocb)
{
/* Insert the caller's iocb in the txq tail for later processing. */
list_add_tail(&piocb->list, &pring->txq);
pring->txq_cnt++;
return (0);
}
static struct lpfc_iocbq *
lpfc_sli_next_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
struct lpfc_iocbq ** piocb)
{
struct lpfc_iocbq * nextiocb;
nextiocb = lpfc_sli_ringtx_get(phba, pring);
if (!nextiocb) {
nextiocb = *piocb;
*piocb = NULL;
}
return nextiocb;
}
int
lpfc_sli_issue_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
struct lpfc_iocbq *piocb, uint32_t flag)
{
struct lpfc_iocbq *nextiocb;
IOCB_t *iocb;
/*
* We should never get an IOCB if we are in a < LINK_DOWN state
*/
if (unlikely(phba->hba_state < LPFC_LINK_DOWN))
return IOCB_ERROR;
/*
* Check to see if we are blocking IOCB processing because of a
* outstanding mbox command.
*/
if (unlikely(pring->flag & LPFC_STOP_IOCB_MBX))
goto iocb_busy;
if (unlikely(phba->hba_state == LPFC_LINK_DOWN)) {
/*
* Only CREATE_XRI, CLOSE_XRI, ABORT_XRI, and QUE_RING_BUF
* can be issued if the link is not up.
*/
switch (piocb->iocb.ulpCommand) {
case CMD_QUE_RING_BUF_CN:
case CMD_QUE_RING_BUF64_CN:
/*
* For IOCBs, like QUE_RING_BUF, that have no rsp ring
* completion, iocb_cmpl MUST be 0.
*/
if (piocb->iocb_cmpl)
piocb->iocb_cmpl = NULL;
/*FALLTHROUGH*/
case CMD_CREATE_XRI_CR:
break;
default:
goto iocb_busy;
}
/*
* For FCP commands, we must be in a state where we can process link
* attention events.
*/
} else if (unlikely(pring->ringno == phba->sli.fcp_ring &&
!(phba->sli.sli_flag & LPFC_PROCESS_LA)))
goto iocb_busy;
/*
* Check to see if this is a high priority command.
* If so bypass tx queue processing.
*/
if (unlikely((flag & SLI_IOCB_HIGH_PRIORITY) &&
(iocb = lpfc_sli_next_iocb_slot(phba, pring)))) {
lpfc_sli_submit_iocb(phba, pring, iocb, piocb);
piocb = NULL;
}
while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) &&
(nextiocb = lpfc_sli_next_iocb(phba, pring, &piocb)))
lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb);
if (iocb)
lpfc_sli_update_ring(phba, pring);
else
lpfc_sli_update_full_ring(phba, pring);
if (!piocb)
return IOCB_SUCCESS;
goto out_busy;
iocb_busy:
pring->stats.iocb_cmd_delay++;
out_busy:
if (!(flag & SLI_IOCB_RET_IOCB)) {
lpfc_sli_ringtx_put(phba, pring, piocb);
return IOCB_SUCCESS;
}
return IOCB_BUSY;
}
int
lpfc_sli_setup(struct lpfc_hba *phba)
{
int i, totiocb = 0;
struct lpfc_sli *psli = &phba->sli;
struct lpfc_sli_ring *pring;
psli->num_rings = MAX_CONFIGURED_RINGS;
psli->sli_flag = 0;
psli->fcp_ring = LPFC_FCP_RING;
psli->next_ring = LPFC_FCP_NEXT_RING;
psli->ip_ring = LPFC_IP_RING;
for (i = 0; i < psli->num_rings; i++) {
pring = &psli->ring[i];
switch (i) {
case LPFC_FCP_RING: /* ring 0 - FCP */
/* numCiocb and numRiocb are used in config_port */
pring->numCiocb = SLI2_IOCB_CMD_R0_ENTRIES;
pring->numRiocb = SLI2_IOCB_RSP_R0_ENTRIES;
pring->numCiocb += SLI2_IOCB_CMD_R1XTRA_ENTRIES;
pring->numRiocb += SLI2_IOCB_RSP_R1XTRA_ENTRIES;
pring->numCiocb += SLI2_IOCB_CMD_R3XTRA_ENTRIES;
pring->numRiocb += SLI2_IOCB_RSP_R3XTRA_ENTRIES;
pring->iotag_ctr = 0;
pring->iotag_max =
(phba->cfg_hba_queue_depth * 2);
pring->fast_iotag = pring->iotag_max;
pring->num_mask = 0;
break;
case LPFC_IP_RING: /* ring 1 - IP */
/* numCiocb and numRiocb are used in config_port */
pring->numCiocb = SLI2_IOCB_CMD_R1_ENTRIES;
pring->numRiocb = SLI2_IOCB_RSP_R1_ENTRIES;
pring->num_mask = 0;
break;
case LPFC_ELS_RING: /* ring 2 - ELS / CT */
/* numCiocb and numRiocb are used in config_port */
pring->numCiocb = SLI2_IOCB_CMD_R2_ENTRIES;
pring->numRiocb = SLI2_IOCB_RSP_R2_ENTRIES;
pring->fast_iotag = 0;
pring->iotag_ctr = 0;
pring->iotag_max = 4096;
pring->num_mask = 4;
pring->prt[0].profile = 0; /* Mask 0 */
pring->prt[0].rctl = FC_ELS_REQ;
pring->prt[0].type = FC_ELS_DATA;
pring->prt[0].lpfc_sli_rcv_unsol_event =
lpfc_els_unsol_event;
pring->prt[1].profile = 0; /* Mask 1 */
pring->prt[1].rctl = FC_ELS_RSP;
pring->prt[1].type = FC_ELS_DATA;
pring->prt[1].lpfc_sli_rcv_unsol_event =
lpfc_els_unsol_event;
pring->prt[2].profile = 0; /* Mask 2 */
/* NameServer Inquiry */
pring->prt[2].rctl = FC_UNSOL_CTL;
/* NameServer */
pring->prt[2].type = FC_COMMON_TRANSPORT_ULP;
pring->prt[2].lpfc_sli_rcv_unsol_event =
lpfc_ct_unsol_event;
pring->prt[3].profile = 0; /* Mask 3 */
/* NameServer response */
pring->prt[3].rctl = FC_SOL_CTL;
/* NameServer */
pring->prt[3].type = FC_COMMON_TRANSPORT_ULP;
pring->prt[3].lpfc_sli_rcv_unsol_event =
lpfc_ct_unsol_event;
break;
}
totiocb += (pring->numCiocb + pring->numRiocb);
}
if (totiocb > MAX_SLI2_IOCB) {
/* Too many cmd / rsp ring entries in SLI2 SLIM */
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"%d:0462 Too many cmd / rsp ring entries in "
"SLI2 SLIM Data: x%x x%x\n",
phba->brd_no, totiocb, MAX_SLI2_IOCB);
}
return 0;
}
int
lpfc_sli_queue_setup(struct lpfc_hba * phba)
{
struct lpfc_sli *psli;
struct lpfc_sli_ring *pring;
int i, cnt;
psli = &phba->sli;
spin_lock_irq(phba->host->host_lock);
INIT_LIST_HEAD(&psli->mboxq);
/* Initialize list headers for txq and txcmplq as double linked lists */
for (i = 0; i < psli->num_rings; i++) {
pring = &psli->ring[i];
pring->ringno = i;
pring->next_cmdidx = 0;
pring->local_getidx = 0;
pring->cmdidx = 0;
INIT_LIST_HEAD(&pring->txq);
INIT_LIST_HEAD(&pring->txcmplq);
INIT_LIST_HEAD(&pring->iocb_continueq);
INIT_LIST_HEAD(&pring->postbufq);
cnt = pring->fast_iotag;
spin_unlock_irq(phba->host->host_lock);
if (cnt) {
pring->fast_lookup =
kmalloc(cnt * sizeof (struct lpfc_iocbq *),
GFP_KERNEL);
if (pring->fast_lookup == 0) {
return (0);
}
memset((char *)pring->fast_lookup, 0,
cnt * sizeof (struct lpfc_iocbq *));
}
spin_lock_irq(phba->host->host_lock);
}
spin_unlock_irq(phba->host->host_lock);
return (1);
}
int
lpfc_sli_hba_down(struct lpfc_hba * phba)
{
struct lpfc_sli *psli;
struct lpfc_sli_ring *pring;
LPFC_MBOXQ_t *pmb;
struct lpfc_iocbq *iocb, *next_iocb;
IOCB_t *icmd = NULL;
int i;
unsigned long flags = 0;
psli = &phba->sli;
lpfc_hba_down_prep(phba);
spin_lock_irqsave(phba->host->host_lock, flags);
for (i = 0; i < psli->num_rings; i++) {
pring = &psli->ring[i];
pring->flag |= LPFC_DEFERRED_RING_EVENT;
/*
* Error everything on the txq since these iocbs have not been
* given to the FW yet.
*/
pring->txq_cnt = 0;
list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
list_del_init(&iocb->list);
if (iocb->iocb_cmpl) {
icmd = &iocb->iocb;
icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
icmd->un.ulpWord[4] = IOERR_SLI_DOWN;
spin_unlock_irqrestore(phba->host->host_lock,
flags);
(iocb->iocb_cmpl) (phba, iocb, iocb);
spin_lock_irqsave(phba->host->host_lock, flags);
} else {
list_add_tail(&iocb->list,
&phba->lpfc_iocb_list);
}
}
INIT_LIST_HEAD(&(pring->txq));
if (pring->fast_lookup) {
kfree(pring->fast_lookup);
pring->fast_lookup = NULL;
}
}
spin_unlock_irqrestore(phba->host->host_lock, flags);
/* Return any active mbox cmds */
del_timer_sync(&psli->mbox_tmo);
spin_lock_irqsave(phba->host->host_lock, flags);
phba->work_hba_events &= ~WORKER_MBOX_TMO;
if (psli->mbox_active) {
pmb = psli->mbox_active;
pmb->mb.mbxStatus = MBX_NOT_FINISHED;
if (pmb->mbox_cmpl) {
spin_unlock_irqrestore(phba->host->host_lock, flags);
pmb->mbox_cmpl(phba,pmb);
spin_lock_irqsave(phba->host->host_lock, flags);
}
}
psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
psli->mbox_active = NULL;
/* Return any pending mbox cmds */
while ((pmb = lpfc_mbox_get(phba)) != NULL) {
pmb->mb.mbxStatus = MBX_NOT_FINISHED;
if (pmb->mbox_cmpl) {
spin_unlock_irqrestore(phba->host->host_lock, flags);
pmb->mbox_cmpl(phba,pmb);
spin_lock_irqsave(phba->host->host_lock, flags);
}
}
INIT_LIST_HEAD(&psli->mboxq);
spin_unlock_irqrestore(phba->host->host_lock, flags);
/*
* Provided the hba is not in an error state, reset it. It is not
* capable of IO anymore.
*/
if (phba->hba_state != LPFC_HBA_ERROR) {
phba->hba_state = LPFC_INIT_START;
lpfc_sli_brdreset(phba, 1);
}
return 1;
}
void
lpfc_sli_pcimem_bcopy(void *srcp, void *destp, uint32_t cnt)
{
uint32_t *src = srcp;
uint32_t *dest = destp;
uint32_t ldata;
int i;
for (i = 0; i < (int)cnt; i += sizeof (uint32_t)) {
ldata = *src;
ldata = le32_to_cpu(ldata);
*dest = ldata;
src++;
dest++;
}
}
int
lpfc_sli_ringpostbuf_put(struct lpfc_hba * phba, struct lpfc_sli_ring * pring,
struct lpfc_dmabuf * mp)
{
/* Stick struct lpfc_dmabuf at end of postbufq so driver can look it up
later */
list_add_tail(&mp->list, &pring->postbufq);
pring->postbufq_cnt++;
return 0;
}
struct lpfc_dmabuf *
lpfc_sli_ringpostbuf_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
dma_addr_t phys)
{
struct lpfc_dmabuf *mp, *next_mp;
struct list_head *slp = &pring->postbufq;
/* Search postbufq, from the begining, looking for a match on phys */
list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
if (mp->phys == phys) {
list_del_init(&mp->list);
pring->postbufq_cnt--;
return mp;
}
}
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"%d:0410 Cannot find virtual addr for mapped buf on "
"ring %d Data x%llx x%p x%p x%x\n",
phba->brd_no, pring->ringno, (unsigned long long)phys,
slp->next, slp->prev, pring->postbufq_cnt);
return NULL;
}
static void
lpfc_sli_abort_elsreq_cmpl(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
struct lpfc_iocbq * rspiocb)
{
struct lpfc_dmabuf *buf_ptr, *buf_ptr1;
/* Free the resources associated with the ELS_REQUEST64 IOCB the driver
* just aborted.
* In this case, context2 = cmd, context2->next = rsp, context3 = bpl
*/
if (cmdiocb->context2) {
buf_ptr1 = (struct lpfc_dmabuf *) cmdiocb->context2;
/* Free the response IOCB before completing the abort
command. */
buf_ptr = NULL;
list_remove_head((&buf_ptr1->list), buf_ptr,
struct lpfc_dmabuf, list);
if (buf_ptr) {
lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
kfree(buf_ptr);
}
lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys);
kfree(buf_ptr1);
}
if (cmdiocb->context3) {
buf_ptr = (struct lpfc_dmabuf *) cmdiocb->context3;
lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
kfree(buf_ptr);
}
list_add_tail(&cmdiocb->list, &phba->lpfc_iocb_list);
return;
}
int
lpfc_sli_issue_abort_iotag32(struct lpfc_hba * phba,
struct lpfc_sli_ring * pring,
struct lpfc_iocbq * cmdiocb)
{
struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list;
struct lpfc_iocbq *abtsiocbp = NULL;
IOCB_t *icmd = NULL;
IOCB_t *iabt = NULL;
/* issue ABTS for this IOCB based on iotag */
list_remove_head(lpfc_iocb_list, abtsiocbp, struct lpfc_iocbq, list);
if (abtsiocbp == NULL)
return 0;
memset(abtsiocbp, 0, sizeof (struct lpfc_iocbq));
iabt = &abtsiocbp->iocb;
icmd = &cmdiocb->iocb;
switch (icmd->ulpCommand) {
case CMD_ELS_REQUEST64_CR:
/* Even though we abort the ELS command, the firmware may access
* the BPL or other resources before it processes our
* ABORT_MXRI64. Thus we must delay reusing the cmdiocb
* resources till the actual abort request completes.
*/
abtsiocbp->context1 = (void *)((unsigned long)icmd->ulpCommand);
abtsiocbp->context2 = cmdiocb->context2;
abtsiocbp->context3 = cmdiocb->context3;
cmdiocb->context2 = NULL;
cmdiocb->context3 = NULL;
abtsiocbp->iocb_cmpl = lpfc_sli_abort_elsreq_cmpl;
break;
default:
list_add_tail(&abtsiocbp->list, lpfc_iocb_list);
return 0;
}
iabt->un.amxri.abortType = ABORT_TYPE_ABTS;
iabt->un.amxri.iotag32 = icmd->un.elsreq64.bdl.ulpIoTag32;
iabt->ulpLe = 1;
iabt->ulpClass = CLASS3;
iabt->ulpCommand = CMD_ABORT_MXRI64_CN;
if (lpfc_sli_issue_iocb(phba, pring, abtsiocbp, 0) == IOCB_ERROR) {
list_add_tail(&abtsiocbp->list, lpfc_iocb_list);
return 0;
}
return 1;
}
static int
lpfc_sli_validate_iocb_cmd(struct lpfc_scsi_buf *lpfc_cmd, uint16_t tgt_id,
uint64_t lun_id, struct lpfc_iocbq *iocb,
uint32_t ctx, lpfc_ctx_cmd ctx_cmd)
{
int rc = 1;
if (lpfc_cmd == NULL)
return rc;
switch (ctx_cmd) {
case LPFC_CTX_LUN:
if ((lpfc_cmd->pCmd->device->id == tgt_id) &&
(lpfc_cmd->pCmd->device->lun == lun_id))
rc = 0;
break;
case LPFC_CTX_TGT:
if (lpfc_cmd->pCmd->device->id == tgt_id)
rc = 0;
break;
case LPFC_CTX_CTX:
if (iocb->iocb.ulpContext == ctx)
rc = 0;
case LPFC_CTX_HOST:
rc = 0;
break;
default:
printk(KERN_ERR "%s: Unknown context cmd type, value %d\n",
__FUNCTION__, ctx_cmd);
break;
}
return rc;
}
int
lpfc_sli_sum_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
uint16_t tgt_id, uint64_t lun_id, lpfc_ctx_cmd ctx_cmd)
{
struct lpfc_iocbq *iocb, *next_iocb;
IOCB_t *cmd = NULL;
struct lpfc_scsi_buf *lpfc_cmd;
int sum = 0, ret_val = 0;
/* Next check the txcmplq */
list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
cmd = &iocb->iocb;
/* Must be a FCP command */
if ((cmd->ulpCommand != CMD_FCP_ICMND64_CR) &&
(cmd->ulpCommand != CMD_FCP_IWRITE64_CR) &&
(cmd->ulpCommand != CMD_FCP_IREAD64_CR)) {
continue;
}
/* context1 MUST be a struct lpfc_scsi_buf */
lpfc_cmd = (struct lpfc_scsi_buf *) (iocb->context1);
ret_val = lpfc_sli_validate_iocb_cmd(lpfc_cmd, tgt_id, lun_id,
NULL, 0, ctx_cmd);
if (ret_val != 0)
continue;
sum++;
}
return sum;
}
void
lpfc_sli_abort_fcp_cmpl(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
struct lpfc_iocbq * rspiocb)
{
spin_lock_irq(phba->host->host_lock);
list_add_tail(&cmdiocb->list, &phba->lpfc_iocb_list);
spin_unlock_irq(phba->host->host_lock);
return;
}
int
lpfc_sli_abort_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
uint16_t tgt_id, uint64_t lun_id, uint32_t ctx,
lpfc_ctx_cmd abort_cmd)
{
struct lpfc_iocbq *iocb, *next_iocb;
struct lpfc_iocbq *abtsiocb = NULL;
struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list;
IOCB_t *cmd = NULL;
struct lpfc_scsi_buf *lpfc_cmd;
int errcnt = 0, ret_val = 0;
list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
cmd = &iocb->iocb;
/* Must be a FCP command */
if ((cmd->ulpCommand != CMD_FCP_ICMND64_CR) &&
(cmd->ulpCommand != CMD_FCP_IWRITE64_CR) &&
(cmd->ulpCommand != CMD_FCP_IREAD64_CR)) {
continue;
}
/* context1 MUST be a struct lpfc_scsi_buf */
lpfc_cmd = (struct lpfc_scsi_buf *) (iocb->context1);
ret_val = lpfc_sli_validate_iocb_cmd(lpfc_cmd, tgt_id, lun_id,
iocb, ctx, abort_cmd);
if (ret_val != 0)
continue;
/* issue ABTS for this IOCB based on iotag */
list_remove_head(lpfc_iocb_list, abtsiocb, struct lpfc_iocbq,
list);
if (abtsiocb == NULL) {
errcnt++;
continue;
}
memset(abtsiocb, 0, sizeof (struct lpfc_iocbq));
abtsiocb->iocb.un.acxri.abortType = ABORT_TYPE_ABTS;
abtsiocb->iocb.un.acxri.abortContextTag = cmd->ulpContext;
abtsiocb->iocb.un.acxri.abortIoTag = cmd->ulpIoTag;
abtsiocb->iocb.ulpLe = 1;
abtsiocb->iocb.ulpClass = cmd->ulpClass;
if (phba->hba_state >= LPFC_LINK_UP)
abtsiocb->iocb.ulpCommand = CMD_ABORT_XRI_CN;
else
abtsiocb->iocb.ulpCommand = CMD_CLOSE_XRI_CN;
/* Setup callback routine and issue the command. */
abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl;
ret_val = lpfc_sli_issue_iocb(phba, pring, abtsiocb, 0);
if (ret_val == IOCB_ERROR) {
list_add_tail(&abtsiocb->list, lpfc_iocb_list);
errcnt++;
continue;
}
}
return errcnt;
}
void
lpfc_sli_wake_iocb_high_priority(struct lpfc_hba * phba,
struct lpfc_iocbq * queue1,
struct lpfc_iocbq * queue2)
{
if (queue1->context2 && queue2)
memcpy(queue1->context2, queue2, sizeof (struct lpfc_iocbq));
/* The waiter is looking for LPFC_IO_HIPRI bit to be set
as a signal to wake up */
queue1->iocb_flag |= LPFC_IO_HIPRI;
return;
}
int
lpfc_sli_issue_iocb_wait_high_priority(struct lpfc_hba * phba,
struct lpfc_sli_ring * pring,
struct lpfc_iocbq * piocb,
uint32_t flag,
struct lpfc_iocbq * prspiocbq,
uint32_t timeout)
{
int j, delay_time, retval = IOCB_ERROR;
/* The caller must left context1 empty. */
if (piocb->context_un.hipri_wait_queue != 0) {
return IOCB_ERROR;
}
/*
* If the caller has provided a response iocbq buffer, context2 must
* be NULL or its an error.
*/
if (prspiocbq && piocb->context2) {
return IOCB_ERROR;
}
piocb->context2 = prspiocbq;
/* Setup callback routine and issue the command. */
piocb->iocb_cmpl = lpfc_sli_wake_iocb_high_priority;
retval = lpfc_sli_issue_iocb(phba, pring, piocb,
flag | SLI_IOCB_HIGH_PRIORITY);
if (retval != IOCB_SUCCESS) {
piocb->context2 = NULL;
return IOCB_ERROR;
}
/*
* This high-priority iocb was sent out-of-band. Poll for its
* completion rather than wait for a signal. Note that the host_lock
* is held by the midlayer and must be released here to allow the
* interrupt handlers to complete the IO and signal this routine via
* the iocb_flag.
* Also, the delay_time is computed to be one second longer than
* the scsi command timeout to give the FW time to abort on
* timeout rather than the driver just giving up. Typically,
* the midlayer does not specify a time for this command so the
* driver is free to enforce its own timeout.
*/
delay_time = ((timeout + 1) * 1000) >> 6;
retval = IOCB_ERROR;
spin_unlock_irq(phba->host->host_lock);
for (j = 0; j < 64; j++) {
msleep(delay_time);
if (piocb->iocb_flag & LPFC_IO_HIPRI) {
piocb->iocb_flag &= ~LPFC_IO_HIPRI;
retval = IOCB_SUCCESS;
break;
}
}
spin_lock_irq(phba->host->host_lock);
piocb->context2 = NULL;
return retval;
}
int
lpfc_sli_issue_mbox_wait(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq,
uint32_t timeout)
{
DECLARE_WAIT_QUEUE_HEAD(done_q);
DECLARE_WAITQUEUE(wq_entry, current);
uint32_t timeleft = 0;
int retval;
/* The caller must leave context1 empty. */
if (pmboxq->context1 != 0) {
return (MBX_NOT_FINISHED);
}
/* setup wake call as IOCB callback */
pmboxq->mbox_cmpl = lpfc_sli_wake_mbox_wait;
/* setup context field to pass wait_queue pointer to wake function */
pmboxq->context1 = &done_q;
/* start to sleep before we wait, to avoid races */
set_current_state(TASK_INTERRUPTIBLE);
add_wait_queue(&done_q, &wq_entry);
/* now issue the command */
retval = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
if (retval == MBX_BUSY || retval == MBX_SUCCESS) {
timeleft = schedule_timeout(timeout * HZ);
pmboxq->context1 = NULL;
/* if schedule_timeout returns 0, we timed out and were not
woken up */
if (timeleft == 0) {
retval = MBX_TIMEOUT;
} else {
retval = MBX_SUCCESS;
}
}
set_current_state(TASK_RUNNING);
remove_wait_queue(&done_q, &wq_entry);
return retval;
}
irqreturn_t
lpfc_intr_handler(int irq, void *dev_id, struct pt_regs * regs)
{
struct lpfc_hba *phba;
uint32_t ha_copy;
uint32_t work_ha_copy;
unsigned long status;
int i;
uint32_t control;
/*
* Get the driver's phba structure from the dev_id and
* assume the HBA is not interrupting.
*/
phba = (struct lpfc_hba *) dev_id;
if (unlikely(!phba))
return IRQ_NONE;
phba->sli.slistat.sli_intr++;
/*
* Call the HBA to see if it is interrupting. If not, don't claim
* the interrupt
*/
/* Ignore all interrupts during initialization. */
if (unlikely(phba->hba_state < LPFC_LINK_DOWN))
return IRQ_NONE;
/*
* Read host attention register to determine interrupt source
* Clear Attention Sources, except Error Attention (to
* preserve status) and Link Attention
*/
spin_lock(phba->host->host_lock);
ha_copy = readl(phba->HAregaddr);
writel((ha_copy & ~(HA_LATT | HA_ERATT)), phba->HAregaddr);
readl(phba->HAregaddr); /* flush */
spin_unlock(phba->host->host_lock);
if (unlikely(!ha_copy))
return IRQ_NONE;
work_ha_copy = ha_copy & phba->work_ha_mask;
if (unlikely(work_ha_copy)) {
if (work_ha_copy & HA_LATT) {
if (phba->sli.sli_flag & LPFC_PROCESS_LA) {
/*
* Turn off Link Attention interrupts
* until CLEAR_LA done
*/
spin_lock(phba->host->host_lock);
phba->sli.sli_flag &= ~LPFC_PROCESS_LA;
control = readl(phba->HCregaddr);
control &= ~HC_LAINT_ENA;
writel(control, phba->HCregaddr);
readl(phba->HCregaddr); /* flush */
spin_unlock(phba->host->host_lock);
}
else
work_ha_copy &= ~HA_LATT;
}
if (work_ha_copy & ~(HA_ERATT|HA_MBATT|HA_LATT)) {
for (i = 0; i < phba->sli.num_rings; i++) {
if (work_ha_copy & (HA_RXATT << (4*i))) {
/*
* Turn off Slow Rings interrupts
*/
spin_lock(phba->host->host_lock);
control = readl(phba->HCregaddr);
control &= ~(HC_R0INT_ENA << i);
writel(control, phba->HCregaddr);
readl(phba->HCregaddr); /* flush */
spin_unlock(phba->host->host_lock);
}
}
}
if (work_ha_copy & HA_ERATT) {
phba->hba_state = LPFC_HBA_ERROR;
/*
* There was a link/board error. Read the
* status register to retrieve the error event
* and process it.
*/
phba->sli.slistat.err_attn_event++;
/* Save status info */
phba->work_hs = readl(phba->HSregaddr);
phba->work_status[0] = readl(phba->MBslimaddr + 0xa8);
phba->work_status[1] = readl(phba->MBslimaddr + 0xac);
/* Clear Chip error bit */
writel(HA_ERATT, phba->HAregaddr);
readl(phba->HAregaddr); /* flush */
/*
* Reseting the HBA is the only reliable way
* to shutdown interrupt when there is a
* ERROR.
*/
lpfc_sli_send_reset(phba, phba->hba_state);
}
spin_lock(phba->host->host_lock);
phba->work_ha |= work_ha_copy;
if (phba->work_wait)
wake_up(phba->work_wait);
spin_unlock(phba->host->host_lock);
}
ha_copy &= ~(phba->work_ha_mask);
/*
* Process all events on FCP ring. Take the optimized path for
* FCP IO. Any other IO is slow path and is handled by
* the worker thread.
*/
status = (ha_copy & (HA_RXMASK << (4*LPFC_FCP_RING)));
status >>= (4*LPFC_FCP_RING);
if (status & HA_RXATT)
lpfc_sli_handle_fast_ring_event(phba,
&phba->sli.ring[LPFC_FCP_RING],
status);
return IRQ_HANDLED;
} /* lpfc_intr_handler */
