[PATCH 10/23] scsi: hisi_sas: hardreset for SATA disk in LU reset

[John Garry]

When issuing an LU reset for a SATA target, issue an
internal abort and a hard reset.

Signed-off-by: John Garry <john.ga...@huawei.com>
Signed-off-by: Xiang Chen <chenxian...@hisilicon.com>
---
 drivers/scsi/hisi_sas/hisi_sas_main.c | 38 ++++++++++++++++++++++++++---------
 1 file changed, 29 insertions(+), 9 deletions(-)

diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c 
b/drivers/scsi/hisi_sas/hisi_sas_main.c
index 36d4e5a..19f2892 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -1037,23 +1037,43 @@ static int hisi_sas_I_T_nexus_reset(struct 
domain_device *device)
 
 static int hisi_sas_lu_reset(struct domain_device *device, u8 *lun)
 {
-       struct hisi_sas_tmf_task tmf_task;
        struct hisi_sas_device *sas_dev = device->lldd_dev;
        struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
        struct device *dev = &hisi_hba->pdev->dev;
        unsigned long flags;
        int rc = TMF_RESP_FUNC_FAILED;
 
-       tmf_task.tmf = TMF_LU_RESET;
        sas_dev->dev_status = HISI_SAS_DEV_EH;
-       rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task);
-       if (rc == TMF_RESP_FUNC_COMPLETE) {
-               spin_lock_irqsave(&hisi_hba->lock, flags);
-               hisi_sas_release_task(hisi_hba, device);
-               spin_unlock_irqrestore(&hisi_hba->lock, flags);
-       }
+       if (dev_is_sata(device)) {
+               struct sas_phy *phy;
+
+               /* Clear internal IO and then hardreset */
+               rc = hisi_sas_internal_task_abort(hisi_hba, device,
+                                                 HISI_SAS_INT_ABT_DEV, 0);
+               if (rc == TMF_RESP_FUNC_FAILED)
+                       goto out;
 
-       /* If failed, fall-through I_T_Nexus reset */
+               phy = sas_get_local_phy(device);
+
+               rc = sas_phy_reset(phy, 1);
+
+               if (rc == 0) {
+                       spin_lock_irqsave(&hisi_hba->lock, flags);
+                       hisi_sas_release_task(hisi_hba, device);
+                       spin_unlock_irqrestore(&hisi_hba->lock, flags);
+               }
+               sas_put_local_phy(phy);
+       } else {
+               struct hisi_sas_tmf_task tmf_task = { .tmf =  TMF_LU_RESET };
+
+               rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task);
+               if (rc == TMF_RESP_FUNC_COMPLETE) {
+                       spin_lock_irqsave(&hisi_hba->lock, flags);
+                       hisi_sas_release_task(hisi_hba, device);
+                       spin_unlock_irqrestore(&hisi_hba->lock, flags);
+               }
+       }
+out:
        dev_err(dev, "lu_reset: for device[%llx]:rc= %d\n",
                sas_dev->device_id, rc);
        return rc;
-- 
1.9.1