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linux-kernel-test/drivers/scsi/lpfc/lpfc_sli.c
James.Smart@Emulex.Com 87f6eaffd7 [SCSI] lpfc: Fix error loading on sparc 
Bug reported via SourceForge - lpfc does not load on sparc.  The lpfc
driver must byteswap all FCP IOCBs to recover the data into cpu native
format.

Also correct issue of "iotag not found" messages

Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-07-02 17:07:03 -05:00

2874 lines
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/*******************************************************************
* This file is part of the Emulex Linux Device Driver for *
* Enterprise Fibre Channel Host Bus Adapters. *
* Refer to the README file included with this package for *
* driver version and adapter support. *
* Copyright (C) 2004 Emulex Corporation. *
* www.emulex.com *
* *
* This program is free software; you can redistribute it and/or *
* modify it under the terms of the GNU General Public License *
* as published by the Free Software Foundation; either version 2 *
* of the License, or (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details, a copy of which *
* can be found in the file COPYING included with this package. *
*******************************************************************/
/*
* $Id: lpfc_sli.c 1.232 2005/04/13 11:59:16EDT sf_support Exp $
*/
#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:
case CMD_CLOSE_XRI_CN:
case CMD_ABORT_XRI_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;
}
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;
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 */
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