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qla2xxx: Fix delayed response to command for loop mode/direct connect.

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Current driver wait for FW to be in the ready state before
processing in-coming commands. For Arbitrated Loop or
Point-to- Point (not switch), FW Ready state can take a while.
FW will transition to ready state after all Nports have been
logged in. In the mean time, certain initiators have completed
the login and starts IO. Driver needs to start processing all
queues if FW is already started.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Quinn Tran 2017-03-15 09:48:55 -07:00 committed by Nicholas Bellinger
parent 482c9dc792
commit ec7193e260
6 changed files with 81 additions and 20 deletions
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10
drivers/scsi/qla2xxx/qla_def.h
View File

@ -3322,6 +3322,10 @@ struct qlt_hw_data {
#define LEAK_EXCHG_THRESH_HOLD_PERCENT 75 /* 75 percent */
#define QLA_EARLY_LINKUP(_ha) \
((_ha->flags.n2n_ae || _ha->flags.lip_ae) && \
_ha->flags.fw_started && !_ha->flags.fw_init_done)
/*
* Qlogic host adapter specific data structure.
*/
@ -3371,9 +3375,11 @@ struct qla_hw_data {
uint32_t fawwpn_enabled:1;
uint32_t exlogins_enabled:1;
uint32_t exchoffld_enabled:1;
/* 35 bits */
uint32_t lip_ae:1;
uint32_t n2n_ae:1;
uint32_t fw_started:1;
uint32_t fw_init_done:1;
} flags;
/* This spinlock is used to protect "io transactions", you must
@ -3466,7 +3472,6 @@ struct qla_hw_data {
#define P2P_LOOP 3
uint8_t interrupts_on;
uint32_t isp_abort_cnt;
#define PCI_DEVICE_ID_QLOGIC_ISP2532 0x2532
#define PCI_DEVICE_ID_QLOGIC_ISP8432 0x8432
#define PCI_DEVICE_ID_QLOGIC_ISP8001 0x8001
@ -3947,6 +3952,7 @@ typedef struct scsi_qla_host {
struct list_head vp_fcports; /* list of fcports */
struct list_head work_list;
spinlock_t work_lock;
struct work_struct iocb_work;
/* Commonly used flags and state information. */
struct Scsi_Host *host;

12
drivers/scsi/qla2xxx/qla_init.c
View File

@ -3178,6 +3178,7 @@ next_check:
} else {
ql_dbg(ql_dbg_init, vha, 0x00d3,
"Init Firmware -- success.\n");
ha->flags.fw_started = 1;
}
return (rval);
@ -4000,6 +4001,7 @@ qla2x00_configure_loop(scsi_qla_host_t *vha)
atomic_set(&vha->loop_state, LOOP_READY);
ql_dbg(ql_dbg_disc, vha, 0x2069,
"LOOP READY.\n");
ha->flags.fw_init_done = 1;
/*
* Process any ATIO queue entries that came in
@ -5491,6 +5493,11 @@ qla2x00_abort_isp_cleanup(scsi_qla_host_t *vha)
if (!(IS_P3P_TYPE(ha)))
ha->isp_ops->reset_chip(vha);
ha->flags.n2n_ae = 0;
ha->flags.lip_ae = 0;
ha->current_topology = 0;
ha->flags.fw_started = 0;
ha->flags.fw_init_done = 0;
ha->chip_reset++;
atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
@ -6767,6 +6774,8 @@ qla2x00_try_to_stop_firmware(scsi_qla_host_t *vha)
return;
if (!ha->fw_major_version)
return;
if (!ha->flags.fw_started)
return;
ret = qla2x00_stop_firmware(vha);
for (retries = 5; ret != QLA_SUCCESS && ret != QLA_FUNCTION_TIMEOUT &&
@ -6780,6 +6789,9 @@ qla2x00_try_to_stop_firmware(scsi_qla_host_t *vha)
"Attempting retry of stop-firmware command.\n");
ret = qla2x00_stop_firmware(vha);
}
ha->flags.fw_started = 0;
ha->flags.fw_init_done = 0;
}
int

14
drivers/scsi/qla2xxx/qla_isr.c
View File

@ -708,6 +708,8 @@ skip_rio:
"mbx7=%xh.\n", mb[1], mb[2], mb[3], mbx);
ha->isp_ops->fw_dump(vha, 1);
ha->flags.fw_init_done = 0;
ha->flags.fw_started = 0;
if (IS_FWI2_CAPABLE(ha)) {
if (mb[1] == 0 && mb[2] == 0) {
@ -761,6 +763,9 @@ skip_rio:
break;
case MBA_LIP_OCCURRED: /* Loop Initialization Procedure */
ha->flags.lip_ae = 1;
ha->flags.n2n_ae = 0;
ql_dbg(ql_dbg_async, vha, 0x5009,
"LIP occurred (%x).\n", mb[1]);
@ -797,6 +802,10 @@ skip_rio:
break;
case MBA_LOOP_DOWN: /* Loop Down Event */
ha->flags.n2n_ae = 0;
ha->flags.lip_ae = 0;
ha->current_topology = 0;
mbx = (IS_QLA81XX(ha) || IS_QLA8031(ha))
? RD_REG_WORD(&reg24->mailbox4) : 0;
mbx = (IS_P3P_TYPE(ha)) ? RD_REG_WORD(&reg82->mailbox_out[4])
@ -866,6 +875,9 @@ skip_rio:
/* case MBA_DCBX_COMPLETE: */
case MBA_POINT_TO_POINT: /* Point-to-Point */
ha->flags.lip_ae = 0;
ha->flags.n2n_ae = 1;
if (IS_QLA2100(ha))
break;
@ -2706,7 +2718,7 @@ void qla24xx_process_response_queue(struct scsi_qla_host *vha,
struct sts_entry_24xx *pkt;
struct qla_hw_data *ha = vha->hw;
if (!vha->flags.online)
if (!ha->flags.fw_started)
return;
while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {

6
drivers/scsi/qla2xxx/qla_mbx.c
View File

@ -3638,11 +3638,11 @@ qla24xx_report_id_acquisition(scsi_qla_host_t *vha,
if (rptid_entry->format == 0) {
/* loop */
ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x10b7,
ql_dbg(ql_dbg_async, vha, 0x10b7,
"Format 0 : Number of VPs setup %d, number of "
"VPs acquired %d.\n", rptid_entry->vp_setup,
rptid_entry->vp_acquired);
ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x10b8,
ql_dbg(ql_dbg_async, vha, 0x10b8,
"Primary port id %02x%02x%02x.\n",
rptid_entry->port_id[2], rptid_entry->port_id[1],
rptid_entry->port_id[0]);
@ -3651,7 +3651,7 @@ qla24xx_report_id_acquisition(scsi_qla_host_t *vha,
} else if (rptid_entry->format == 1) {
/* fabric */
ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x10b9,
ql_dbg(ql_dbg_async, vha, 0x10b9,
"Format 1: VP[%d] enabled - status %d - with "
"port id %02x%02x%02x.\n", rptid_entry->vp_idx,
rptid_entry->vp_status,

21
drivers/scsi/qla2xxx/qla_os.c
View File

@ -2560,6 +2560,20 @@ qla2xxx_scan_finished(struct Scsi_Host *shost, unsigned long time)
return atomic_read(&vha->loop_state) == LOOP_READY;
}
static void qla2x00_iocb_work_fn(struct work_struct *work)
{
struct scsi_qla_host *vha = container_of(work,
struct scsi_qla_host, iocb_work);
int cnt = 0;
while (!list_empty(&vha->work_list)) {
qla2x00_do_work(vha);
cnt++;
if (cnt > 10)
break;
}
}
/*
* PCI driver interface
*/
@ -3078,6 +3092,7 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
*/
qla2xxx_wake_dpc(base_vha);
INIT_WORK(&base_vha->iocb_work, qla2x00_iocb_work_fn);
INIT_WORK(&ha->board_disable, qla2x00_disable_board_on_pci_error);
if (IS_QLA8031(ha) || IS_MCTP_CAPABLE(ha)) {
@ -4321,7 +4336,11 @@ qla2x00_post_work(struct scsi_qla_host *vha, struct qla_work_evt *e)
spin_lock_irqsave(&vha->work_lock, flags);
list_add_tail(&e->list, &vha->work_list);
spin_unlock_irqrestore(&vha->work_lock, flags);
qla2xxx_wake_dpc(vha);
if (QLA_EARLY_LINKUP(vha->hw))
schedule_work(&vha->iocb_work);
else
qla2xxx_wake_dpc(vha);
return QLA_SUCCESS;
}

38
drivers/scsi/qla2xxx/qla_target.c
View File

@ -638,6 +638,7 @@ int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport,
break;
case SRB_NACK_PRLI:
fcport->fw_login_state = DSC_LS_PRLI_PEND;
fcport->deleted = 0;
c = "PRLI";
break;
case SRB_NACK_LOGO:
@ -1576,6 +1577,9 @@ static void qlt_send_notify_ack(struct scsi_qla_host *vha,
request_t *pkt;
struct nack_to_isp *nack;
if (!ha->flags.fw_started)
return;
ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha);
/* Send marker if required */
@ -3053,7 +3057,7 @@ int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
else
vha->tgt_counters.core_qla_que_buf++;
if (!vha->flags.online || cmd->reset_count != ha->chip_reset) {
if (!ha->flags.fw_started || cmd->reset_count != ha->chip_reset) {
/*
* Either the port is not online or this request was from
* previous life, just abort the processing.
@ -3194,7 +3198,7 @@ int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
spin_lock_irqsave(&ha->hardware_lock, flags);
if (!vha->flags.online || (cmd->reset_count != ha->chip_reset) ||
if (!ha->flags.fw_started || (cmd->reset_count != ha->chip_reset) ||
(cmd->sess && cmd->sess->deleted)) {
/*
* Either the port is not online or this request was from
@ -3372,7 +3376,7 @@ static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha,
ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c,
"Sending TERM ELS CTIO (ha=%p)\n", ha);
pkt = (request_t *)qla2x00_alloc_iocbs_ready(vha, NULL);
pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
if (pkt == NULL) {
ql_dbg(ql_dbg_tgt, vha, 0xe080,
"qla_target(%d): %s failed: unable to allocate "
@ -4697,7 +4701,8 @@ static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
}
if (sess != NULL) {
if (sess->fw_login_state == DSC_LS_PLOGI_PEND) {
if (sess->fw_login_state != DSC_LS_PLOGI_PEND &&
sess->fw_login_state != DSC_LS_PLOGI_COMP) {
/*
* Impatient initiator sent PRLI before last
* PLOGI could finish. Will force him to re-try,
@ -4736,15 +4741,23 @@ static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
/* Make session global (not used in fabric mode) */
if (ha->current_topology != ISP_CFG_F) {
set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
qla2xxx_wake_dpc(vha);
if (sess) {
ql_dbg(ql_dbg_disc, vha, 0xffff,
"%s %d %8phC post nack\n",
__func__, __LINE__, sess->port_name);
qla24xx_post_nack_work(vha, sess, iocb,
SRB_NACK_PRLI);
res = 0;
} else {
set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
qla2xxx_wake_dpc(vha);
}
} else {
if (sess) {
ql_dbg(ql_dbg_disc, vha, 0xffff,
"%s %d %8phC post nack\n",
__func__, __LINE__, sess->port_name);
"%s %d %8phC post nack\n",
__func__, __LINE__, sess->port_name);
qla24xx_post_nack_work(vha, sess, iocb,
SRB_NACK_PRLI);
res = 0;
@ -4752,7 +4765,6 @@ static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
}
break;
case ELS_TPRLO:
if (le16_to_cpu(iocb->u.isp24.flags) &
NOTIFY24XX_FLAGS_GLOBAL_TPRLO) {
@ -5222,7 +5234,7 @@ static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
unsigned long flags;
if (unlikely(tgt == NULL)) {
ql_dbg(ql_dbg_io, vha, 0x3064,
ql_dbg(ql_dbg_tgt, vha, 0x3064,
"ATIO pkt, but no tgt (ha %p)", ha);
return;
}
@ -6359,7 +6371,7 @@ qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked)
struct atio_from_isp *pkt;
int cnt, i;
if (!vha->flags.online)
if (!ha->flags.fw_started)
return;
while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) ||