hisi_sas: Add abnormal irq handler

Add abnormal irq handler. This handler is concerned with phy down event.
Also add port formed and port deformed handlers.

Signed-off-by: John Garry <john.garry@huawei.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
diff --git a/drivers/scsi/hisi_sas/hisi_sas.h b/drivers/scsi/hisi_sas/hisi_sas.h
index 999f319..e5ee3c9 100644
--- a/drivers/scsi/hisi_sas/hisi_sas.h
+++ b/drivers/scsi/hisi_sas/hisi_sas.h
@@ -136,6 +136,7 @@
 			     struct hisi_sas_slot *slot, int abort);
 	void (*free_device)(struct hisi_hba *hisi_hba,
 			    struct hisi_sas_device *dev);
+	int (*get_wideport_bitmap)(struct hisi_hba *hisi_hba, int port_id);
 	int complete_hdr_size;
 };
 
@@ -330,6 +331,7 @@
 			  const struct hisi_sas_hw *ops);
 extern int hisi_sas_remove(struct platform_device *pdev);
 
+extern void hisi_sas_phy_down(struct hisi_hba *hisi_hba, int phy_no, int rdy);
 extern void hisi_sas_slot_task_free(struct hisi_hba *hisi_hba,
 				    struct sas_task *task,
 				    struct hisi_sas_slot *slot);