linux-kernel - [PATCH v3 11/18] scsi: libsas: Add TMF handler exec complete callback

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Date:   Tue, 22 Feb 2022 20:50:52 +0800
From:   John Garry <john.garry@...wei.com>
To:     <jejb@...ux.ibm.com>, <martin.petersen@...cle.com>,
        <artur.paszkiewicz@...el.com>, <jinpu.wang@...ud.ionos.com>,
        <chenxiang66@...ilicon.com>, <damien.lemoal@...nsource.wdc.com>,
        <hch@....de>
CC:     <Ajish.Koshy@...rochip.com>, <yanaijie@...wei.com>,
        <linux-doc@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-scsi@...r.kernel.org>, <linuxarm@...wei.com>,
        <liuqi115@...wei.com>, <Viswas.G@...rochip.com>,
        John Garry <john.garry@...wei.com>
Subject: [PATCH v3 11/18] scsi: libsas: Add TMF handler exec complete callback

The pm8001 TMF handler has some special processing when the TMF completes,
so add a callback and fill it in for the pm8001 driver.

Signed-off-by: John Garry <john.garry@...wei.com>
Reviewed-by: Christoph Hellwig <hch@....de>
Tested-by: Yihang Li <liyihang6@...ilicon.com>
Tested-by: Damien Le Moal <damien.lemoal@...nsource.wdc.com>
---
 drivers/scsi/libsas/sas_scsi_host.c |  3 +++
 drivers/scsi/pm8001/pm8001_init.c   |  1 +
 drivers/scsi/pm8001/pm8001_sas.c    | 14 ++++++++++++++
 drivers/scsi/pm8001/pm8001_sas.h    |  1 +
 include/scsi/libsas.h               |  3 +++
 5 files changed, 22 insertions(+)

diff --git a/drivers/scsi/libsas/sas_scsi_host.c b/drivers/scsi/libsas/sas_scsi_host.c
index af2dd95a2b28..0f599744738d 100644
--- a/drivers/scsi/libsas/sas_scsi_host.c
+++ b/drivers/scsi/libsas/sas_scsi_host.c
@@ -957,6 +957,9 @@ int sas_execute_tmf(struct domain_device *device, void *parameter,
 
 		wait_for_completion(&task->slow_task->completion);
 
+		if (i->dft->lldd_tmf_exec_complete)
+			i->dft->lldd_tmf_exec_complete(device);
+
 		res = TMF_RESP_FUNC_FAILED;
 
 		if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
diff --git a/drivers/scsi/pm8001/pm8001_init.c b/drivers/scsi/pm8001/pm8001_init.c
index b8cf1bae4040..8eef8f4de42f 100644
--- a/drivers/scsi/pm8001/pm8001_init.c
+++ b/drivers/scsi/pm8001/pm8001_init.c
@@ -128,6 +128,7 @@ static struct sas_domain_function_template pm8001_transport_ops = {
 	.lldd_lu_reset		= pm8001_lu_reset,
 	.lldd_query_task	= pm8001_query_task,
 	.lldd_port_formed	= pm8001_port_formed,
+	.lldd_tmf_exec_complete = pm8001_setds_completion,
 };
 
 /**
diff --git a/drivers/scsi/pm8001/pm8001_sas.c b/drivers/scsi/pm8001/pm8001_sas.c
index a53e4b54154f..69da7246ea20 100644
--- a/drivers/scsi/pm8001/pm8001_sas.c
+++ b/drivers/scsi/pm8001/pm8001_sas.c
@@ -1376,3 +1376,17 @@ void pm8001_port_formed(struct asd_sas_phy *sas_phy)
 	}
 	sas_port->lldd_port = port;
 }
+
+void pm8001_setds_completion(struct domain_device *dev)
+{
+	struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev);
+	struct pm8001_device *pm8001_dev = dev->lldd_dev;
+	DECLARE_COMPLETION_ONSTACK(completion_setstate);
+
+	if (pm8001_ha->chip_id != chip_8001) {
+		pm8001_dev->setds_completion = &completion_setstate;
+		PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha,
+			pm8001_dev, DS_OPERATIONAL);
+		wait_for_completion(&completion_setstate);
+	}
+}
diff --git a/drivers/scsi/pm8001/pm8001_sas.h b/drivers/scsi/pm8001/pm8001_sas.h
index 0b1086042ca6..c19c9c80206c 100644
--- a/drivers/scsi/pm8001/pm8001_sas.h
+++ b/drivers/scsi/pm8001/pm8001_sas.h
@@ -742,6 +742,7 @@ pm8001_ccb_task_free_done(struct pm8001_hba_info *pm8001_ha,
 	smp_mb(); /*in order to force CPU ordering*/
 	task->task_done(task);
 }
+void pm8001_setds_completion(struct domain_device *dev);
 
 #endif
 
diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h
index 9c181ebccfee..dd6551e809a0 100644
--- a/include/scsi/libsas.h
+++ b/include/scsi/libsas.h
@@ -652,6 +652,9 @@ struct sas_domain_function_template {
 	int (*lldd_lu_reset)(struct domain_device *, u8 *lun);
 	int (*lldd_query_task)(struct sas_task *);
 
+	/* Special TMF callbacks */
+	void (*lldd_tmf_exec_complete)(struct domain_device *dev);
+
 	/* Port and Adapter management */
 	int (*lldd_clear_nexus_port)(struct asd_sas_port *);
 	int (*lldd_clear_nexus_ha)(struct sas_ha_struct *);
-- 
2.26.2