From: Quinn Tran <qutran@xxxxxxxxxxx>
Put adapter into a wind down state if OS does not
make any attempt to recover the adapter after
PCIE error.
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Quinn Tran <qutran@xxxxxxxxxxx>
Signed-off-by: Nilesh Javali <njavali@xxxxxxxxxxx>
---
drivers/scsi/qla2xxx/qla_bsg.c | 10 ++++++-
drivers/scsi/qla2xxx/qla_def.h | 4 +++
drivers/scsi/qla2xxx/qla_init.c | 20 ++++++++++++++
drivers/scsi/qla2xxx/qla_os.c | 48 +++++++++++++++++++++++++++++++++
4 files changed, 81 insertions(+), 1 deletion(-)
diff --git a/drivers/scsi/qla2xxx/qla_bsg.c b/drivers/scsi/qla2xxx/qla_bsg.c
index 606474ae4419..299c5cba92f4 100644
--- a/drivers/scsi/qla2xxx/qla_bsg.c
+++ b/drivers/scsi/qla2xxx/qla_bsg.c
@@ -3061,6 +3061,13 @@ qla24xx_bsg_timeout(struct bsg_job *bsg_job)
ql_log(ql_log_info, vha, 0x708b, "%s CMD timeout. bsg ptr %p.\n",
__func__, bsg_job);
+
+ if (qla2x00_isp_reg_stat(ha)) {
+ ql_log(ql_log_info, vha, 0x9007,
+ "PCI/Register disconnect.\n");
+ qla_pci_set_eeh_busy(vha);
+ }
+
/* find the bsg job from the active list of commands */
spin_lock_irqsave(&ha->hardware_lock, flags);
for (que = 0; que < ha->max_req_queues; que++) {
@@ -3078,7 +3085,8 @@ qla24xx_bsg_timeout(struct bsg_job *bsg_job)
sp->u.bsg_job == bsg_job) {
req->outstanding_cmds[cnt] = NULL;
spin_unlock_irqrestore(&ha->hardware_lock, flags);
- if (ha->isp_ops->abort_command(sp)) {
+
+ if (!ha->flags.eeh_busy && ha->isp_ops->abort_command(sp)) {
ql_log(ql_log_warn, vha, 0x7089,
"mbx abort_command failed.\n");
bsg_reply->result = -EIO;
diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index 5888362cf8d1..74d4234e5a31 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -4053,6 +4053,9 @@ struct qla_hw_data {
uint32_t n2n_fw_acc_sec:1;
uint32_t plogi_template_valid:1;
uint32_t port_isolated:1;
+ uint32_t eeh_flush:2;
+#define EEH_FLUSH_RDY 1
+#define EEH_FLUSH_DONE 2
} flags;
uint16_t max_exchg;
@@ -4087,6 +4090,7 @@ struct qla_hw_data {
uint32_t rsp_que_len;
uint32_t req_que_off;
uint32_t rsp_que_off;
+ unsigned long eeh_jif;
/* Multi queue data structs */
device_reg_t *mqiobase;
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index e4db1c1f3f6b..7860cf4319ef 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -47,6 +47,7 @@ qla2x00_sp_timeout(struct timer_list *t)
{
srb_t *sp = from_timer(sp, t, u.iocb_cmd.timer);
struct srb_iocb *iocb;
+ scsi_qla_host_t *vha = sp->vha;
WARN_ON(irqs_disabled());
iocb = &sp->u.iocb_cmd;
@@ -54,6 +55,12 @@ qla2x00_sp_timeout(struct timer_list *t)
/* ref: TMR */
kref_put(&sp->cmd_kref, qla2x00_sp_release);
+
+ if (vha && qla2x00_isp_reg_stat(vha->hw)) {
+ ql_log(ql_log_info, vha, 0x9008,
+ "PCI/Register disconnect.\n");
+ qla_pci_set_eeh_busy(vha);
+ }
}
void qla2x00_sp_free(srb_t *sp)
@@ -9671,6 +9678,12 @@ int qla2xxx_disable_port(struct Scsi_Host *host)
vha->hw->flags.port_isolated = 1;
+ if (qla2x00_isp_reg_stat(vha->hw)) {
+ ql_log(ql_log_info, vha, 0x9006,
+ "PCI/Register disconnect, exiting.\n");
+ qla_pci_set_eeh_busy(vha);
+ return FAILED;
+ }
if (qla2x00_chip_is_down(vha))
return 0;
@@ -9686,6 +9699,13 @@ int qla2xxx_enable_port(struct Scsi_Host *host)
{
scsi_qla_host_t *vha = shost_priv(host);
+ if (qla2x00_isp_reg_stat(vha->hw)) {
+ ql_log(ql_log_info, vha, 0x9001,
+ "PCI/Register disconnect, exiting.\n");
+ qla_pci_set_eeh_busy(vha);
+ return FAILED;
+ }
+
vha->hw->flags.port_isolated = 0;
/* Set the flag to 1, so that isp_abort can proceed */
vha->flags.online = 1;
diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index 4f3125b826c4..210fb5c52421 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -333,6 +333,11 @@ MODULE_PARM_DESC(ql2xabts_wait_nvme,
"To wait for ABTS response on I/O timeouts for NVMe. (default: 1)");
+u32 ql2xdelay_before_pci_error_handling = 5;
+module_param(ql2xdelay_before_pci_error_handling, uint, 0644);
+MODULE_PARM_DESC(ql2xdelay_before_pci_error_handling,
+ "Number of seconds delayed before qla begin PCI error self-handling (default: 5).\n");
+
static void qla2x00_clear_drv_active(struct qla_hw_data *);
static void qla2x00_free_device(scsi_qla_host_t *);
static int qla2xxx_map_queues(struct Scsi_Host *shost);
@@ -7238,6 +7243,44 @@ static void qla_heart_beat(struct scsi_qla_host *vha, u16 dpc_started)
}
}
+static void qla_wind_down_chip(scsi_qla_host_t *vha)
+{
+ struct qla_hw_data *ha = vha->hw;
+
+ if (!ha->flags.eeh_busy)
+ return;
+ if (ha->pci_error_state)
+ /* system is trying to recover */
+ return;
+
+ /*
+ * Current system is not handling PCIE error. At this point, this is
+ * best effort to wind down the adapter.
+ */
+ if (time_after_eq(jiffies, ha->eeh_jif + ql2xdelay_before_pci_error_handling * HZ) &&
+ !ha->flags.eeh_flush) {
+ ql_log(ql_log_info, vha, 0x9009,
+ "PCI Error detected, attempting to reset hardware.\n");
+
+ ha->isp_ops->reset_chip(vha);
+ ha->isp_ops->disable_intrs(ha);
+
+ ha->flags.eeh_flush = EEH_FLUSH_RDY;
+ ha->eeh_jif = jiffies;
+
+ } else if (ha->flags.eeh_flush == EEH_FLUSH_RDY &&
+ time_after_eq(jiffies, ha->eeh_jif + 5 * HZ)) {
+ pci_clear_master(ha->pdev);
+
+ /* flush all command */
+ qla2x00_abort_isp_cleanup(vha);
+ ha->flags.eeh_flush = EEH_FLUSH_DONE;
+
+ ql_log(ql_log_info, vha, 0x900a,
+ "PCI Error handling complete, all IOs aborted.\n");
+ }
+}
+
/**************************************************************************
* qla2x00_timer
*
@@ -7261,6 +7304,8 @@ qla2x00_timer(struct timer_list *t)
fc_port_t *fcport = NULL;
if (ha->flags.eeh_busy) {
+ qla_wind_down_chip(vha);
+
ql_dbg(ql_dbg_timer, vha, 0x6000,
"EEH = %d, restarting timer.\n",
ha->flags.eeh_busy);
@@ -7841,6 +7886,9 @@ void qla_pci_set_eeh_busy(struct scsi_qla_host *vha)
spin_lock_irqsave(&base_vha->work_lock, flags);
if (!ha->flags.eeh_busy) {
+ ha->eeh_jif = jiffies;
+ ha->flags.eeh_flush = 0;
+
ha->flags.eeh_busy = 1;
do_cleanup = true;
}
--
2.19.0.rc0
