From: Himanshu Madhani <himanshu.madhani@cavium.com>
To: target-devel@vger.kernel.org, bart.vanassche@gmail.com,
hch@infradead.org, nab@linux-iscsi.org
Cc: giridhar.malavali@cavium.com, linux-scsi@vger.kernel.org,
himanshu.madhani@cavium.com
Subject: [PATCH v4 09/12] qla2xxx: Add Dual mode support in the driver
Date: Thu, 19 Jan 2017 22:28:01 -0800 [thread overview]
Message-ID: <1484893684-1255-10-git-send-email-himanshu.madhani@cavium.com> (raw)
In-Reply-To: <1484893684-1255-1-git-send-email-himanshu.madhani@cavium.com>
From: Quinn Tran <quinn.tran@cavium.com>
Add switch to allow both Initiator Mode & Target
mode to operate at the same time.
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
---
drivers/scsi/qla2xxx/qla_def.h | 1 +
drivers/scsi/qla2xxx/qla_init.c | 6 +-
drivers/scsi/qla2xxx/qla_isr.c | 19 ++++++-
drivers/scsi/qla2xxx/qla_target.c | 110 +++++++++++++++++++++++++++++++------
drivers/scsi/qla2xxx/qla_target.h | 3 +
drivers/scsi/qla2xxx/tcm_qla2xxx.c | 2 +-
6 files changed, 119 insertions(+), 22 deletions(-)
diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index 253f991..fd179df 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -3390,6 +3390,7 @@ struct qla_hw_data {
#define FLOGI_SP_SUPPORT BIT_13
uint8_t port_no; /* Physical port of adapter */
+ uint8_t exch_starvation;
/* Timeout timers. */
uint8_t loop_down_abort_time; /* port down timer */
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index 8b7c046..4c0a2d8 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -1568,8 +1568,7 @@ void qla2x00_fcport_event_handler(scsi_qla_host_t *vha,
}
}
- if (qla_ini_mode_enabled(vha) ||
- qla_dual_mode_enabled(vha))
+ if (qla_ini_mode_enabled(vha) || qla_dual_mode_enabled(vha))
rval = qla2x00_init_rings(vha);
ha->flags.chip_reset_done = 1;
@@ -3994,7 +3993,8 @@ static void qla2xxx_nvram_wwn_from_ofw(scsi_qla_host_t *vha, nvram_t *nv)
* Process any ATIO queue entries that came in
* while we weren't online.
*/
- if (qla_tgt_mode_enabled(vha)) {
+ if (qla_tgt_mode_enabled(vha) ||
+ qla_dual_mode_enabled(vha)) {
if (IS_QLA27XX(ha) || IS_QLA83XX(ha)) {
spin_lock_irqsave(&ha->tgt.atio_lock,
flags);
diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index 7ad9cdf..c67b52c 100644
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -1029,7 +1029,8 @@ static void qla_irq_affinity_notify(struct irq_affinity_notify *,
qla2x00_mark_all_devices_lost(vha, 1);
- if (vha->vp_idx == 0 && !qla_ini_mode_enabled(vha))
+ if (vha->vp_idx == 0 &&
+ (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)))
set_bit(SCR_PENDING, &vha->dpc_flags);
set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
@@ -1641,6 +1642,7 @@ static void qla_irq_affinity_notify(struct irq_affinity_notify *,
fcport->d_id.b.area, fcport->d_id.b.al_pa,
le32_to_cpu(logio->io_parameter[0]));
+ vha->hw->exch_starvation = 0;
data[0] = MBS_COMMAND_COMPLETE;
if (sp->type != SRB_LOGIN_CMD)
goto logio_done;
@@ -1676,6 +1678,21 @@ static void qla_irq_affinity_notify(struct irq_affinity_notify *,
case LSC_SCODE_NPORT_USED:
data[0] = MBS_LOOP_ID_USED;
break;
+ case LSC_SCODE_NOXCB:
+ vha->hw->exch_starvation++;
+ if (vha->hw->exch_starvation > 5) {
+ ql_log(ql_log_warn, vha, 0xffff,
+ "Exchange starvation. Resetting RISC\n");
+
+ vha->hw->exch_starvation = 0;
+
+ if (IS_P3P_TYPE(vha->hw))
+ set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
+ else
+ set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
+ qla2xxx_wake_dpc(vha);
+ }
+ /* drop through */
default:
data[0] = MBS_COMMAND_ERROR;
break;
diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
index b5cfab0..225d2bf 100644
--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -55,8 +55,17 @@
"disabled on enabling target mode and then on disabling target mode "
"enabled back; "
"\"disabled\" - initiator mode will never be enabled; "
+ "\"dual\" - Initiator Modes will be enabled. Target Mode can be activated "
+ "when ready "
"\"enabled\" (default) - initiator mode will always stay enabled.");
+static int ql_dm_tgt_ex_pct = 50;
+module_param(ql_dm_tgt_ex_pct, int, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(ql_dm_tgt_ex_pct,
+ "For Dual Mode (qlini_mode=dual), this parameter determines "
+ "the percentage of exchanges/cmds FW will allocate resources "
+ "for Target mode.");
+
int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
static int temp_sam_status = SAM_STAT_BUSY;
@@ -1295,7 +1304,8 @@ int qlt_stop_phase1(struct qla_tgt *tgt)
wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
/* Big hammer */
- if (!ha->flags.host_shutting_down && qla_tgt_mode_enabled(vha))
+ if (!ha->flags.host_shutting_down &&
+ (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)))
qlt_disable_vha(vha);
/* Wait for sessions to clear out (just in case) */
@@ -5263,6 +5273,32 @@ void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
break;
+ case MBA_REJECTED_FCP_CMD:
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xffff,
+ "qla_target(%d): Async event LS_REJECT occurred "
+ "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
+ le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
+ le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
+
+ if (le16_to_cpu(mailbox[3]) == 1) {
+ /* exchange starvation. */
+ vha->hw->exch_starvation++;
+ if (vha->hw->exch_starvation > 5) {
+ ql_log(ql_log_warn, vha, 0xffff,
+ "Exchange starvation-. Resetting RISC\n");
+
+ vha->hw->exch_starvation = 0;
+ if (IS_P3P_TYPE(vha->hw))
+ set_bit(FCOE_CTX_RESET_NEEDED,
+ &vha->dpc_flags);
+ else
+ set_bit(ISP_ABORT_NEEDED,
+ &vha->dpc_flags);
+ qla2xxx_wake_dpc(vha);
+ }
+ }
+ break;
+
case MBA_PORT_UPDATE:
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d,
"qla_target(%d): Port update async event %#x "
@@ -5272,10 +5308,11 @@ void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
login_code = le16_to_cpu(mailbox[2]);
- if (login_code == 0x4)
+ if (login_code == 0x4) {
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e,
"Async MB 2: Got PLOGI Complete\n");
- else if (login_code == 0x7)
+ vha->hw->exch_starvation = 0;
+ } else if (login_code == 0x7)
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f,
"Async MB 2: Port Logged Out\n");
break;
@@ -5826,7 +5863,10 @@ static void qlt_set_mode(struct scsi_qla_host *vha)
vha->host->active_mode = MODE_TARGET;
break;
case QLA2XXX_INI_MODE_ENABLED:
- vha->host->active_mode |= MODE_TARGET;
+ vha->host->active_mode = MODE_UNKNOWN;
+ break;
+ case QLA2XXX_INI_MODE_DUAL:
+ vha->host->active_mode = MODE_DUAL;
break;
default:
break;
@@ -5849,8 +5889,8 @@ static void qlt_clear_mode(struct scsi_qla_host *vha)
vha->host->active_mode = MODE_INITIATOR;
break;
case QLA2XXX_INI_MODE_ENABLED:
- vha->host->active_mode &= ~MODE_TARGET;
- vha->host->active_mode |= MODE_INITIATOR;
+ case QLA2XXX_INI_MODE_DUAL:
+ vha->host->active_mode = MODE_INITIATOR;
break;
default:
break;
@@ -5945,9 +5985,6 @@ static void qlt_disable_vha(struct scsi_qla_host *vha)
void
qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
{
- if (!qla_tgt_mode_enabled(vha))
- return;
-
vha->vha_tgt.qla_tgt = NULL;
mutex_init(&vha->vha_tgt.tgt_mutex);
@@ -5978,7 +6015,6 @@ static void qlt_disable_vha(struct scsi_qla_host *vha)
ct_req->req.rff_id.fc4_feature = BIT_1;
} else if (qla_dual_mode_enabled(vha))
ct_req->req.rff_id.fc4_feature = BIT_0 | BIT_1;
-
}
/*
@@ -5997,7 +6033,7 @@ static void qlt_disable_vha(struct scsi_qla_host *vha)
uint16_t cnt;
struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring;
- if (!qla_tgt_mode_enabled(vha))
+ if (qla_ini_mode_enabled(vha))
return;
for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) {
@@ -6090,8 +6126,10 @@ static void qlt_disable_vha(struct scsi_qla_host *vha)
qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
{
struct qla_hw_data *ha = vha->hw;
+ u32 tmp;
+ u16 t;
- if (qla_tgt_mode_enabled(vha)) {
+ if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
if (!ha->tgt.saved_set) {
/* We save only once */
ha->tgt.saved_exchange_count = nv->exchange_count;
@@ -6104,7 +6142,24 @@ static void qlt_disable_vha(struct scsi_qla_host *vha)
ha->tgt.saved_set = 1;
}
- nv->exchange_count = cpu_to_le16(0xFFFF);
+ if (qla_tgt_mode_enabled(vha)) {
+ nv->exchange_count = cpu_to_le16(0xFFFF);
+ } else { /* dual */
+ if (ql_dm_tgt_ex_pct > 100) {
+ ql_dm_tgt_ex_pct = 50;
+ } else if (ql_dm_tgt_ex_pct == 100) {
+ /* leave some for FW */
+ ql_dm_tgt_ex_pct = 95;
+ }
+
+ tmp = ha->orig_fw_xcb_count * ql_dm_tgt_ex_pct;
+ tmp = tmp/100;
+ if (tmp > 0xffff)
+ tmp = 0xffff;
+
+ t = tmp & 0xffff;
+ nv->exchange_count = cpu_to_le16(t);
+ }
/* Enable target mode */
nv->firmware_options_1 |= cpu_to_le32(BIT_4);
@@ -6189,11 +6244,13 @@ static void qlt_disable_vha(struct scsi_qla_host *vha)
qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
{
struct qla_hw_data *ha = vha->hw;
+ u32 tmp;
+ u16 t;
if (!QLA_TGT_MODE_ENABLED())
return;
- if (qla_tgt_mode_enabled(vha)) {
+ if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
if (!ha->tgt.saved_set) {
/* We save only once */
ha->tgt.saved_exchange_count = nv->exchange_count;
@@ -6206,7 +6263,23 @@ static void qlt_disable_vha(struct scsi_qla_host *vha)
ha->tgt.saved_set = 1;
}
- nv->exchange_count = cpu_to_le16(0xFFFF);
+ if (qla_tgt_mode_enabled(vha)) {
+ nv->exchange_count = cpu_to_le16(0xFFFF);
+ } else { /* dual */
+ if (ql_dm_tgt_ex_pct > 100) {
+ ql_dm_tgt_ex_pct = 50;
+ } else if (ql_dm_tgt_ex_pct == 100) {
+ /* leave some for FW */
+ ql_dm_tgt_ex_pct = 95;
+ }
+
+ tmp = ha->orig_fw_xcb_count * ql_dm_tgt_ex_pct;
+ tmp = tmp/100;
+ if (tmp > 0xffff)
+ tmp = 0xffff;
+ t = tmp & 0xffff;
+ nv->exchange_count = cpu_to_le16(t);
+ }
/* Enable target mode */
nv->firmware_options_1 |= cpu_to_le32(BIT_4);
@@ -6316,10 +6389,11 @@ static void qlt_disable_vha(struct scsi_qla_host *vha)
qlt_modify_vp_config(struct scsi_qla_host *vha,
struct vp_config_entry_24xx *vpmod)
{
- if (qla_tgt_mode_enabled(vha))
+ /* enable target mode. Bit5 = 1 => disable */
+ if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))
vpmod->options_idx1 &= ~BIT_5;
- /* Disable ini mode, if requested. */
+ /* Disable ini mode, if requested. bit4 = 1 => disable */
if (qla_tgt_mode_enabled(vha))
vpmod->options_idx1 &= ~BIT_4;
}
@@ -6474,6 +6548,8 @@ static int __init qlt_parse_ini_mode(void)
ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
+ else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0)
+ ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL;
else
return false;
diff --git a/drivers/scsi/qla2xxx/qla_target.h b/drivers/scsi/qla2xxx/qla_target.h
index 5e56192..ac86b37 100644
--- a/drivers/scsi/qla2xxx/qla_target.h
+++ b/drivers/scsi/qla2xxx/qla_target.h
@@ -45,10 +45,12 @@
#define QLA2XXX_INI_MODE_STR_EXCLUSIVE "exclusive"
#define QLA2XXX_INI_MODE_STR_DISABLED "disabled"
#define QLA2XXX_INI_MODE_STR_ENABLED "enabled"
+#define QLA2XXX_INI_MODE_STR_DUAL "dual"
#define QLA2XXX_INI_MODE_EXCLUSIVE 0
#define QLA2XXX_INI_MODE_DISABLED 1
#define QLA2XXX_INI_MODE_ENABLED 2
+#define QLA2XXX_INI_MODE_DUAL 3
#define QLA2XXX_COMMAND_COUNT_INIT 250
#define QLA2XXX_IMMED_NOTIFY_COUNT_INIT 250
@@ -975,6 +977,7 @@ extern int qlt_lport_register(void *, u64, u64, u64,
* is not set. Right now, ha value is ignored.
*/
#define QLA_TGT_MODE_ENABLED() (ql2x_ini_mode != QLA2XXX_INI_MODE_ENABLED)
+
extern int ql2x_ini_mode;
static inline bool qla_tgt_mode_enabled(struct scsi_qla_host *ha)
diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.c b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
index e37d7ee..8b878a2 100644
--- a/drivers/scsi/qla2xxx/tcm_qla2xxx.c
+++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
@@ -1744,7 +1744,7 @@ static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha,
(struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr;
struct fc_vport_identifiers vport_id;
- if (!qla_tgt_mode_enabled(base_vha)) {
+ if (qla_ini_mode_enabled(base_vha)) {
pr_err("qla2xxx base_vha not enabled for target mode\n");
return -EPERM;
}
--
1.8.3.1
next prev parent reply other threads:[~2017-01-20 6:28 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-20 6:27 [PATCH v4 00/12] qla2xxx: Feature updates for target Himanshu Madhani
2017-01-20 6:27 ` [PATCH v4 01/12] qla2xxx: Remove direct access of scsi_status field in se_cmd Himanshu Madhani
2017-01-20 6:27 ` [PATCH v4 02/12] qla2xxx: Cleanup TMF code translation from qla_target Himanshu Madhani
2017-01-20 6:27 ` [PATCH v4 03/12] qla2xxx: Make trace flags more readable Himanshu Madhani
2017-01-20 6:27 ` [PATCH v4 04/12] qla2xxx: Remove SRR code Himanshu Madhani
2017-01-20 6:27 ` [PATCH v4 05/12] qla2xxx: Fix wrong argument in sp done callback Himanshu Madhani
2017-01-20 6:27 ` [PATCH v4 06/12] qla2xxx: Use d_id instead of s_id for more clarity Himanshu Madhani
2017-01-20 6:27 ` [PATCH v4 07/12] qla2xxx: Track I-T nexus as single fc_port struct Himanshu Madhani
2017-01-20 6:28 ` [PATCH v4 08/12] qla2xxx: Add framework for Async fabric discovery Himanshu Madhani
2017-01-20 6:28 ` Himanshu Madhani [this message]
2017-01-20 6:28 ` [PATCH v4 10/12] qla2xxx: Remove unused reverse_ini_mode Himanshu Madhani
2017-01-20 6:28 ` [PATCH v4 11/12] qla2xxx: Improve RSCN handling in driver Himanshu Madhani
2017-01-20 6:28 ` [PATCH v4 12/12] qla2xxx: Simplify usage of SRB structure " Himanshu Madhani
2017-01-20 22:09 ` [PATCH v4 00/12] qla2xxx: Feature updates for target Bart Van Assche
2017-01-24 17:24 ` Bart Van Assche
2017-01-24 18:32 ` Madhani, Himanshu
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1484893684-1255-10-git-send-email-himanshu.madhani@cavium.com \
--to=himanshu.madhani@cavium.com \
--cc=bart.vanassche@gmail.com \
--cc=giridhar.malavali@cavium.com \
--cc=hch@infradead.org \
--cc=linux-scsi@vger.kernel.org \
--cc=nab@linux-iscsi.org \
--cc=target-devel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.