linux-kernel - [PATCH 4.19 120/140] scsi: hisi_sas: send primitive NOTIFY to SSP situation only

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Date:   Mon, 16 Dec 2019 18:49:48 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Xiang Chen <chenxiang66@...ilicon.com>,
        John Garry <john.garry@...wei.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.19 120/140] scsi: hisi_sas: send primitive NOTIFY to SSP situation only

From: Xiang Chen <chenxiang66@...ilicon.com>

[ Upstream commit 569eddcf3a0f4efff4ef96a7012010e0f7daa8b4 ]

Send primitive NOTIFY to SSP situation only, or it causes underflow issue
when sending IO. Also rename hisi_sas_hw.sl_notify() to hisi_sas_hw.
sl_notify_ssp().

Signed-off-by: Xiang Chen <chenxiang66@...ilicon.com>
Signed-off-by: John Garry <john.garry@...wei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@...cle.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/scsi/hisi_sas/hisi_sas.h       | 2 +-
 drivers/scsi/hisi_sas/hisi_sas_main.c  | 3 ++-
 drivers/scsi/hisi_sas/hisi_sas_v1_hw.c | 4 ++--
 drivers/scsi/hisi_sas/hisi_sas_v2_hw.c | 4 ++--
 drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 4 ++--
 5 files changed, 9 insertions(+), 8 deletions(-)

diff --git a/drivers/scsi/hisi_sas/hisi_sas.h b/drivers/scsi/hisi_sas/hisi_sas.h
index 6c7d2e201abed..d499c44661661 100644
--- a/drivers/scsi/hisi_sas/hisi_sas.h
+++ b/drivers/scsi/hisi_sas/hisi_sas.h
@@ -220,7 +220,7 @@ struct hisi_sas_hw {
 	int (*slot_index_alloc)(struct hisi_hba *hisi_hba, int *slot_idx,
 				struct domain_device *device);
 	struct hisi_sas_device *(*alloc_dev)(struct domain_device *device);
-	void (*sl_notify)(struct hisi_hba *hisi_hba, int phy_no);
+	void (*sl_notify_ssp)(struct hisi_hba *hisi_hba, int phy_no);
 	int (*get_free_slot)(struct hisi_hba *hisi_hba, struct hisi_sas_dq *dq);
 	void (*start_delivery)(struct hisi_sas_dq *dq);
 	void (*prep_ssp)(struct hisi_hba *hisi_hba,
diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
index f478d1f50dfc0..0ad8875c30e8e 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -716,7 +716,8 @@ static void hisi_sas_phyup_work(struct work_struct *work)
 	struct asd_sas_phy *sas_phy = &phy->sas_phy;
 	int phy_no = sas_phy->id;
 
-	hisi_hba->hw->sl_notify(hisi_hba, phy_no); /* This requires a sleep */
+	if (phy->identify.target_port_protocols == SAS_PROTOCOL_SSP)
+		hisi_hba->hw->sl_notify_ssp(hisi_hba, phy_no);
 	hisi_sas_bytes_dmaed(hisi_hba, phy_no);
 }
 
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
index 410eccf0bc5eb..8aa3222fe4865 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
@@ -834,7 +834,7 @@ static void phys_init_v1_hw(struct hisi_hba *hisi_hba)
 	mod_timer(timer, jiffies + HZ);
 }
 
-static void sl_notify_v1_hw(struct hisi_hba *hisi_hba, int phy_no)
+static void sl_notify_ssp_v1_hw(struct hisi_hba *hisi_hba, int phy_no)
 {
 	u32 sl_control;
 
@@ -1822,7 +1822,7 @@ static struct scsi_host_template sht_v1_hw = {
 static const struct hisi_sas_hw hisi_sas_v1_hw = {
 	.hw_init = hisi_sas_v1_init,
 	.setup_itct = setup_itct_v1_hw,
-	.sl_notify = sl_notify_v1_hw,
+	.sl_notify_ssp = sl_notify_ssp_v1_hw,
 	.clear_itct = clear_itct_v1_hw,
 	.prep_smp = prep_smp_v1_hw,
 	.prep_ssp = prep_ssp_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 c4774d63d5d04..ebc984ffe6a22 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
@@ -1584,7 +1584,7 @@ static void phys_init_v2_hw(struct hisi_hba *hisi_hba)
 	}
 }
 
-static void sl_notify_v2_hw(struct hisi_hba *hisi_hba, int phy_no)
+static void sl_notify_ssp_v2_hw(struct hisi_hba *hisi_hba, int phy_no)
 {
 	u32 sl_control;
 
@@ -3575,7 +3575,7 @@ static const struct hisi_sas_hw hisi_sas_v2_hw = {
 	.setup_itct = setup_itct_v2_hw,
 	.slot_index_alloc = slot_index_alloc_quirk_v2_hw,
 	.alloc_dev = alloc_dev_quirk_v2_hw,
-	.sl_notify = sl_notify_v2_hw,
+	.sl_notify_ssp = sl_notify_ssp_v2_hw,
 	.get_wideport_bitmap = get_wideport_bitmap_v2_hw,
 	.clear_itct = clear_itct_v2_hw,
 	.free_device = free_device_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 a7407d5376ba2..ce2f232b3df38 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
@@ -827,7 +827,7 @@ static void phys_init_v3_hw(struct hisi_hba *hisi_hba)
 	}
 }
 
-static void sl_notify_v3_hw(struct hisi_hba *hisi_hba, int phy_no)
+static void sl_notify_ssp_v3_hw(struct hisi_hba *hisi_hba, int phy_no)
 {
 	u32 sl_control;
 
@@ -2127,7 +2127,7 @@ static const struct hisi_sas_hw hisi_sas_v3_hw = {
 	.get_wideport_bitmap = get_wideport_bitmap_v3_hw,
 	.complete_hdr_size = sizeof(struct hisi_sas_complete_v3_hdr),
 	.clear_itct = clear_itct_v3_hw,
-	.sl_notify = sl_notify_v3_hw,
+	.sl_notify_ssp = sl_notify_ssp_v3_hw,
 	.prep_ssp = prep_ssp_v3_hw,
 	.prep_smp = prep_smp_v3_hw,
 	.prep_stp = prep_ata_v3_hw,
-- 
2.20.1