Commit 055945df authored by John Garry's avatar John Garry Committed by Martin K. Petersen
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scsi: hisi_sas: hardreset for SATA disk in LU reset



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

Signed-off-by: default avatarJohn Garry <john.garry@huawei.com>
Signed-off-by: default avatarXiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent c35279f2
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+29 −9
Original line number Diff line number Diff line
@@ -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;
	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;

		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);
		}

	/* If failed, fall-through I_T_Nexus reset */
	}
out:
	dev_err(dev, "lu_reset: for device[%llx]:rc= %d\n",
		sas_dev->device_id, rc);
	return rc;