From: Andrew Vasquez <andrewv@marvell.com>
Date: Wed, 26 Feb 2020 14:40:11 -0800
Subject: scsi: qla2xxx: Use a dedicated interrupt handler for
'handshake-required' ISPs
Patch-mainline: v5.7-rc1
Git-commit: 7b2a73963c91cf6bad6b8f58636560cd1f3cf319
References: bsc#1157424
There's no point checking flags.disable_msix_handshake in the
interrupt handler hot-path. Instead perform the check during
queue-pair instantiation and use the proper interrupt handler.
Link: https://lore.kernel.org/r/20200226224022.24518-8-hmadhani@marvell.com
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Andrew Vasquez <andrewv@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Daniel Wagner <dwagner@suse.de>
---
drivers/scsi/qla2xxx/qla_def.h | 1 +
drivers/scsi/qla2xxx/qla_gbl.h | 2 ++
drivers/scsi/qla2xxx/qla_isr.c | 31 ++++++++++++++++++++++++-------
drivers/scsi/qla2xxx/qla_mid.c | 3 ++-
4 files changed, 29 insertions(+), 8 deletions(-)
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -3250,6 +3250,7 @@ struct isp_operations {
#define QLA_MSIX_RSP_Q 0x01
#define QLA_ATIO_VECTOR 0x02
#define QLA_MSIX_QPAIR_MULTIQ_RSP_Q 0x03
+#define QLA_MSIX_QPAIR_MULTIQ_RSP_Q_HS 0x04
#define QLA_MIDX_DEFAULT 0
#define QLA_MIDX_RSP_Q 1
--- a/drivers/scsi/qla2xxx/qla_gbl.h
+++ b/drivers/scsi/qla2xxx/qla_gbl.h
@@ -565,6 +565,8 @@ qla2x00_process_completed_request(struct
uint32_t);
extern irqreturn_t
qla2xxx_msix_rsp_q(int irq, void *dev_id);
+extern irqreturn_t
+qla2xxx_msix_rsp_q_hs(int irq, void *dev_id);
fc_port_t *qla2x00_find_fcport_by_loopid(scsi_qla_host_t *, uint16_t);
fc_port_t *qla2x00_find_fcport_by_wwpn(scsi_qla_host_t *, u8 *, u8);
fc_port_t *qla2x00_find_fcport_by_nportid(scsi_qla_host_t *, port_id_t *, u8);
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -3584,6 +3584,25 @@ qla2xxx_msix_rsp_q(int irq, void *dev_id
{
struct qla_hw_data *ha;
struct qla_qpair *qpair;
+
+ qpair = dev_id;
+ if (!qpair) {
+ ql_log(ql_log_info, NULL, 0x505b,
+ "%s: NULL response queue pointer.\n", __func__);
+ return IRQ_NONE;
+ }
+ ha = qpair->hw;
+
+ queue_work(ha->wq, &qpair->q_work);
+
+ return IRQ_HANDLED;
+}
+
+irqreturn_t
+qla2xxx_msix_rsp_q_hs(int irq, void *dev_id)
+{
+ struct qla_hw_data *ha;
+ struct qla_qpair *qpair;
struct device_reg_24xx __iomem *reg;
unsigned long flags;
@@ -3595,13 +3614,10 @@ qla2xxx_msix_rsp_q(int irq, void *dev_id
}
ha = qpair->hw;
- /* Clear the interrupt, if enabled, for this response queue */
- if (unlikely(!ha->flags.disable_msix_handshake)) {
- reg = &ha->iobase->isp24;
- spin_lock_irqsave(&ha->hardware_lock, flags);
- WRT_REG_DWORD(®->hccr, HCCRX_CLR_RISC_INT);
- spin_unlock_irqrestore(&ha->hardware_lock, flags);
- }
+ reg = &ha->iobase->isp24;
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ WRT_REG_DWORD(®->hccr, HCCRX_CLR_RISC_INT);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
queue_work(ha->wq, &qpair->q_work);
@@ -3620,6 +3636,7 @@ static const struct qla_init_msix_entry
{ "rsp_q", qla24xx_msix_rsp_q },
{ "atio_q", qla83xx_msix_atio_q },
{ "qpair_multiq", qla2xxx_msix_rsp_q },
+ { "qpair_multiq_hs", qla2xxx_msix_rsp_q_hs },
};
static const struct qla_init_msix_entry qla82xx_msix_entries[] = {
--- a/drivers/scsi/qla2xxx/qla_mid.c
+++ b/drivers/scsi/qla2xxx/qla_mid.c
@@ -896,7 +896,8 @@ qla25xx_create_rsp_que(struct qla_hw_dat
rsp->rsp_q_out);
ret = qla25xx_request_irq(ha, qpair, qpair->msix,
- QLA_MSIX_QPAIR_MULTIQ_RSP_Q);
+ ha->flags.disable_msix_handshake ?
+ QLA_MSIX_QPAIR_MULTIQ_RSP_Q : QLA_MSIX_QPAIR_MULTIQ_RSP_Q_HS);
if (ret)
goto que_failed;