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Subject[PATCH 1/9] scsi: hisi_sas: add host reset interface for test
Date
From: Xiang Chen <chenxiang66@hisilicon.com>

Add host reset interface to make it easier for testing the host
reset feature.

Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: John Garry <john.garry@huawei.com>
---
drivers/scsi/hisi_sas/hisi_sas_main.c | 13 +++++++++++++
drivers/scsi/hisi_sas/hisi_sas_v1_hw.c | 1 +
drivers/scsi/hisi_sas/hisi_sas_v2_hw.c | 1 +
drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 1 +
4 files changed, 16 insertions(+)

diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
index 14bac4966c87..a1eaddcf740d 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -2234,6 +2234,19 @@ void hisi_sas_kill_tasklets(struct hisi_hba *hisi_hba)
}
EXPORT_SYMBOL_GPL(hisi_sas_kill_tasklets);

+int hisi_sas_host_reset(struct Scsi_Host *shost, int reset_type)
+{
+ struct hisi_hba *hisi_hba = shost_priv(shost);
+
+ if (reset_type != SCSI_ADAPTER_RESET)
+ return -EOPNOTSUPP;
+
+ queue_work(hisi_hba->wq, &hisi_hba->rst_work);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(hisi_sas_host_reset);
+
struct scsi_transport_template *hisi_sas_stt;
EXPORT_SYMBOL_GPL(hisi_sas_stt);

diff --git a/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
index 293807443480..078ddd3871f2 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
@@ -1823,6 +1823,7 @@ static struct scsi_host_template sht_v1_hw = {
.target_destroy = sas_target_destroy,
.ioctl = sas_ioctl,
.shost_attrs = host_attrs_v1_hw,
+ .host_reset = hisi_sas_host_reset,
};

static const struct hisi_sas_hw hisi_sas_v1_hw = {
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
index 89160ab3efb0..33b72c7f72c5 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
@@ -3599,6 +3599,7 @@ static struct scsi_host_template sht_v2_hw = {
.target_destroy = sas_target_destroy,
.ioctl = sas_ioctl,
.shost_attrs = host_attrs_v2_hw,
+ .host_reset = hisi_sas_host_reset,
};

static const struct hisi_sas_hw hisi_sas_v2_hw = {
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
index 086695a4099f..e8323d038d53 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
@@ -2678,6 +2678,7 @@ static struct scsi_host_template sht_v3_hw = {
.ioctl = sas_ioctl,
.shost_attrs = host_attrs_v3_hw,
.tag_alloc_policy = BLK_TAG_ALLOC_RR,
+ .host_reset = hisi_sas_host_reset,
};

static const struct hisi_sas_hw hisi_sas_v3_hw = {
--
2.17.1
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