scsi: pm80xx: Fix for phy enable/disable functionality

Added proper mask for phy id in mpi_phy_stop_resp().
Signed-off-by: Deepak Ukey <deepak.ukey@microchip.com>
Signed-off-by: Viswas G <Viswas.G@microchip.com>
Acked-by: Jack Wang <jinpu.wang@profitbricks.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/pm8001/pm8001_defs.h

@@ -132,4 +132,12 @@ enum pm8001_hba_info_flags {
 	PM8001F_RUN_TIME	= (1U << 1),
 };
 
+/**
+ * Phy Status
+ */
+#define PHY_LINK_DISABLE	0x00
+#define PHY_LINK_DOWN		0x01
+#define PHY_STATE_LINK_UP_SPCV	0x2
+#define PHY_STATE_LINK_UP_SPC	0x1
+
 #endif

drivers/scsi/pm8001/pm8001_hwi.c

@@ -3810,7 +3810,8 @@ static int mpi_hw_event(struct pm8001_hba_info *pm8001_ha, void* piomb)
 			" status = %x\n", status));
 		if (status == 0) {
 			phy->phy_state = 1;
-			if (pm8001_ha->flags == PM8001F_RUN_TIME)
+			if (pm8001_ha->flags == PM8001F_RUN_TIME &&
+					phy->enable_completion != NULL)
 				complete(phy->enable_completion);
 		}
 		break;

drivers/scsi/pm8001/pm8001_hwi.h

@@ -131,10 +131,6 @@
 #define LINKRATE_30			(0x02 << 8)
 #define LINKRATE_60			(0x04 << 8)
 
-/* for phy state */
-
-#define PHY_STATE_LINK_UP_SPC		0x1
-
 /* for new SPC controllers MEMBASE III is shared between BIOS and DATA */
 #define GSM_SM_BASE			0x4F0000
 struct mpi_msg_hdr{

drivers/scsi/pm8001/pm8001_init.c

@@ -121,7 +121,7 @@ static void pm8001_phy_init(struct pm8001_hba_info *pm8001_ha, int phy_id)
 {
 	struct pm8001_phy *phy = &pm8001_ha->phy[phy_id];
 	struct asd_sas_phy *sas_phy = &phy->sas_phy;
-	phy->phy_state = 0;
+	phy->phy_state = PHY_LINK_DISABLE;
 	phy->pm8001_ha = pm8001_ha;
 	sas_phy->enabled = (phy_id < pm8001_ha->chip->n_phy) ? 1 : 0;
 	sas_phy->class = SAS;
@@ -1067,6 +1067,7 @@ static int pm8001_pci_probe(struct pci_dev *pdev,
 	if (rc)
 		goto err_out_shost;
 	scsi_scan_host(pm8001_ha->shost);
+	pm8001_ha->flags = PM8001F_RUN_TIME;
 	return 0;
 
 err_out_shost:

drivers/scsi/pm8001/pm8001_sas.c

@@ -157,9 +157,12 @@ int pm8001_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func,
 	int rc = 0, phy_id = sas_phy->id;
 	struct pm8001_hba_info *pm8001_ha = NULL;
 	struct sas_phy_linkrates *rates;
+	struct sas_ha_struct *sas_ha;
+	struct pm8001_phy *phy;
 	DECLARE_COMPLETION_ONSTACK(completion);
 	unsigned long flags;
 	pm8001_ha = sas_phy->ha->lldd_ha;
+	phy = &pm8001_ha->phy[phy_id];
 	pm8001_ha->phy[phy_id].enable_completion = &completion;
 	switch (func) {
 	case PHY_FUNC_SET_LINK_RATE:
@@ -172,7 +175,7 @@ int pm8001_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func,
 			pm8001_ha->phy[phy_id].maximum_linkrate =
 				rates->maximum_linkrate;
 		}
-		if (pm8001_ha->phy[phy_id].phy_state == 0) {
+		if (pm8001_ha->phy[phy_id].phy_state ==  PHY_LINK_DISABLE) {
 			PM8001_CHIP_DISP->phy_start_req(pm8001_ha, phy_id);
 			wait_for_completion(&completion);
 		}
@@ -180,7 +183,7 @@ int pm8001_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func,
 					      PHY_LINK_RESET);
 		break;
 	case PHY_FUNC_HARD_RESET:
-		if (pm8001_ha->phy[phy_id].phy_state == 0) {
+		if (pm8001_ha->phy[phy_id].phy_state == PHY_LINK_DISABLE) {
 			PM8001_CHIP_DISP->phy_start_req(pm8001_ha, phy_id);
 			wait_for_completion(&completion);
 		}
@@ -188,7 +191,7 @@ int pm8001_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func,
 					      PHY_HARD_RESET);
 		break;
 	case PHY_FUNC_LINK_RESET:
-		if (pm8001_ha->phy[phy_id].phy_state == 0) {
+		if (pm8001_ha->phy[phy_id].phy_state == PHY_LINK_DISABLE) {
 			PM8001_CHIP_DISP->phy_start_req(pm8001_ha, phy_id);
 			wait_for_completion(&completion);
 		}
@@ -200,6 +203,25 @@ int pm8001_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func,
 					      PHY_LINK_RESET);
 		break;
 	case PHY_FUNC_DISABLE:
+		if (pm8001_ha->chip_id != chip_8001) {
+			if (pm8001_ha->phy[phy_id].phy_state ==
+				PHY_STATE_LINK_UP_SPCV) {
+				sas_ha = pm8001_ha->sas;
+				sas_phy_disconnected(&phy->sas_phy);
+				sas_ha->notify_phy_event(&phy->sas_phy,
+					PHYE_LOSS_OF_SIGNAL);
+				phy->phy_attached = 0;
+			}
+		} else {
+			if (pm8001_ha->phy[phy_id].phy_state ==
+				PHY_STATE_LINK_UP_SPC) {
+				sas_ha = pm8001_ha->sas;
+				sas_phy_disconnected(&phy->sas_phy);
+				sas_ha->notify_phy_event(&phy->sas_phy,
+					PHYE_LOSS_OF_SIGNAL);
+				phy->phy_attached = 0;
+			}
+		}
 		PM8001_CHIP_DISP->phy_stop_req(pm8001_ha, phy_id);
 		break;
 	case PHY_FUNC_GET_EVENTS:

drivers/scsi/pm8001/pm80xx_hwi.c

@@ -3118,8 +3118,9 @@ static int mpi_phy_start_resp(struct pm8001_hba_info *pm8001_ha, void *piomb)
 		pm8001_printk("phy start resp status:0x%x, phyid:0x%x\n",
 				status, phy_id));
 	if (status == 0) {
-		phy->phy_state = 1;
-		if (pm8001_ha->flags == PM8001F_RUN_TIME)
+		phy->phy_state = PHY_LINK_DOWN;
+		if (pm8001_ha->flags == PM8001F_RUN_TIME &&
+				phy->enable_completion != NULL)
 			complete(phy->enable_completion);
 	}
 	return 0;
@@ -3211,7 +3212,7 @@ static int mpi_hw_event(struct pm8001_hba_info *pm8001_ha, void *piomb)
 			return 0;
 		}
 		phy->phy_attached = 0;
-		phy->phy_state = 0;
+		phy->phy_state = PHY_LINK_DISABLE;
 		break;
 	case HW_EVENT_PORT_INVALID:
 		PM8001_MSG_DBG(pm8001_ha,
@@ -3384,13 +3385,14 @@ static int mpi_phy_stop_resp(struct pm8001_hba_info *pm8001_ha, void *piomb)
 	u32 status =
 		le32_to_cpu(pPayload->status);
 	u32 phyid =
-		le32_to_cpu(pPayload->phyid);
+		le32_to_cpu(pPayload->phyid) & 0xFF;
 	struct pm8001_phy *phy = &pm8001_ha->phy[phyid];
 	PM8001_MSG_DBG(pm8001_ha,
 			pm8001_printk("phy:0x%x status:0x%x\n",
 					phyid, status));
-	if (status == 0)
-		phy->phy_state = 0;
+	if (status == PHY_STOP_SUCCESS ||
+		status == PHY_STOP_ERR_DEVICE_ATTACHED)
+		phy->phy_state = PHY_LINK_DISABLE;
 	return 0;
 }
 

drivers/scsi/pm8001/pm80xx_hwi.h

@@ -170,6 +170,10 @@
 #define LINKRATE_60			(0x04 << 8)
 #define LINKRATE_120			(0x08 << 8)
 
+/*phy_stop*/
+#define PHY_STOP_SUCCESS		0x00
+#define PHY_STOP_ERR_DEVICE_ATTACHED	0x1046
+
 /* phy_profile */
 #define SAS_PHY_ANALOG_SETTINGS_PAGE	0x04
 #define PHY_DWORD_LENGTH		0xC
@@ -216,8 +220,6 @@
 #define SAS_DOPNRJT_RTRY_TMO            128
 #define SAS_COPNRJT_RTRY_TMO            128
 
-/* for phy state */
-#define PHY_STATE_LINK_UP_SPCV		0x2
 /*
   Making ORR bigger than IT NEXUS LOSS which is 2000000us = 2 second.
   Assuming a bigger value 3 second, 3000000/128 = 23437.5 where 128