scsi: hisi_sas: Set iptt aborted flag when receiving an abnormal CQ

driver inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I62ZXO
CVE: NA

------------------------------------------------

During the write I/O, when the SAS PHY switch is tested, the hardware
may reports two CQs for one IO. the first cq indicates invalid port when
DPH scheduling, the second cq indicates that response frame has been
written to the memory but the I/O is ended abnormally due to I/O data
underload. So set iptt aborted flag when receiving an abnormal CQ, then the
host will discards the IPTT frame received from the SAS hard disk.
Signed-off-by: NXingui Yang <yangxingui@huawei.com>
Reviewed-by: Nkang fenglong <kangfenglong@huawei.com>
Signed-off-by: NYongqiang Liu <liuyongqiang13@huawei.com>

drivers/scsi/hisi_sas/hisi_sas_v3_hw.c

@@ -2265,6 +2265,23 @@ static bool is_ncq_err(struct hisi_sas_complete_v3_hdr *complete_hdr)
 		(dw3 & FIS_ATA_STATUS_ERR);
 }
 
+static void set_aborted_iptt(struct hisi_hba *hisi_hba,
+			     struct hisi_sas_slot *slot)
+{
+	u32 cfg_abt_set_query_iptt = hisi_sas_read32(hisi_hba,
+			CFG_ABT_SET_QUERY_IPTT);
+	cfg_abt_set_query_iptt &= ~CFG_SET_ABORTED_IPTT_MSK;
+	cfg_abt_set_query_iptt |= (1 << CFG_SET_ABORTED_EN_OFF) |
+			(slot->idx << CFG_SET_ABORTED_IPTT_OFF);
+	hisi_sas_write32(hisi_hba, CFG_ABT_SET_QUERY_IPTT,
+			cfg_abt_set_query_iptt);
+	cfg_abt_set_query_iptt &= ~(1 << CFG_SET_ABORTED_EN_OFF);
+	hisi_sas_write32(hisi_hba, CFG_ABT_SET_QUERY_IPTT,
+			cfg_abt_set_query_iptt);
+	hisi_sas_write32(hisi_hba, CFG_ABT_SET_IPTT_DONE,
+			1 << CFG_ABT_SET_IPTT_DONE_OFF);
+}
+
 static void
 slot_err_v3_hw(struct hisi_hba *hisi_hba, struct sas_task *task,
 	       struct hisi_sas_slot *slot)
@@ -2420,6 +2437,7 @@ slot_complete_v3_hw(struct hisi_hba *hisi_hba, struct hisi_sas_slot *slot)
 		u32 device_id = (complete_hdr->dw1 & 0xffff0000) >> 16;
 		struct hisi_sas_itct *itct = &hisi_hba->itct[device_id];
 
+		set_aborted_iptt(hisi_hba, slot);
 		slot_err_v3_hw(hisi_hba, task, slot);
 		dev_info(dev, "erroneous completion iptt=%d task=%pK dev id=%d sas_addr=0x%llx "
 			"CQ hdr: 0x%x 0x%x 0x%x 0x%x "