[SCSI] libsas: set attached device type and target protocols for local phys

Before:
$ cat /sys/class/sas_phy/phy-6\:3/device_type
none
$ cat /sys/class/sas_phy/phy-6\:3/target_port_protocols
none

After:
$ cat /sys/class/sas_phy/phy-6\:3/device_type
end device
$ cat /sys/class/sas_phy/phy-6\:3/target_port_protocols
sata

Also downgrade the phy_list_lock to _irq instead of _irqsave since
libsas will never call sas_get_port_device with interrupts disbled.

Signed-off-by: Dan Williams <[e-mail]>
Signed-off-by: James Bottomley <[e-mail]>

drivers/scsi/libsas/sas_discover.c

···
  */
 static int sas_get_port_device(struct asd_sas_port *port)
 {
-	unsigned long flags;
 	struct asd_sas_phy *phy;
 	struct sas_rphy *rphy;
 	struct domain_device *dev;
···
 	if (!dev)
 		return -ENOMEM;
 
-	spin_lock_irqsave(&port->phy_list_lock, flags);
+	spin_lock_irq(&port->phy_list_lock);
 	if (list_empty(&port->phy_list)) {
-		spin_unlock_irqrestore(&port->phy_list_lock, flags);
+		spin_unlock_irq(&port->phy_list_lock);
 		sas_put_device(dev);
 		return -ENODEV;
 	}
···
 	memcpy(dev->frame_rcvd, phy->frame_rcvd, min(sizeof(dev->frame_rcvd),
 					     (size_t)phy->frame_rcvd_size));
 	spin_unlock(&phy->frame_rcvd_lock);
-	spin_unlock_irqrestore(&port->phy_list_lock, flags);
+	spin_unlock_irq(&port->phy_list_lock);
 
 	if (dev->frame_rcvd[0] == 0x34 && port->oob_mode == SATA_OOB_MODE) {
 		struct dev_to_host_fis *fis =
···
 		sas_put_device(dev);
 		return -ENODEV;
 	}
+
+	spin_lock_irq(&port->phy_list_lock);
+	list_for_each_entry(phy, &port->phy_list, port_phy_el)
+		sas_phy_set_target(phy, dev);
+	spin_unlock_irq(&port->phy_list_lock);
 	rphy->identify.phy_identifier = phy->phy->identify.phy_identifier;
 	memcpy(dev->sas_addr, port->attached_sas_addr, SAS_ADDR_SIZE);
 	sas_fill_in_rphy(dev, rphy);

drivers/scsi/libsas/sas_internal.h

···
 #include <scsi/scsi_host.h>
 #include <scsi/scsi_transport_sas.h>
 #include <scsi/libsas.h>
+#include <scsi/sas_ata.h>
 
 #define sas_printk(fmt, ...) printk(KERN_NOTICE "sas: " fmt, ## __VA_ARGS__)
 
···
 	default:
 		rphy->identify.device_type = SAS_PHY_UNUSED;
 		break;
+	}
+}
+
+static inline void sas_phy_set_target(struct asd_sas_phy *p, struct domain_device *dev)
+{
+	struct sas_phy *phy = p->phy;
+
+	if (dev) {
+		if (dev_is_sata(dev))
+			phy->identify.device_type = SAS_END_DEVICE;
+		else
+			phy->identify.device_type = dev->dev_type;
+		phy->identify.target_port_protocols = dev->tproto;
+	} else {
+		phy->identify.device_type = SAS_PHY_UNUSED;
+		phy->identify.target_port_protocols = 0;
 	}
 }
 

drivers/scsi/libsas/sas_port.c

···
 
 	/* add the phy to the port */
 	list_add_tail(&phy->port_phy_el, &port->phy_list);
+	sas_phy_set_target(phy, port->port_dev);
 	phy->port = port;
 	port->num_phys++;
 	port->phy_mask |= (1U << phy->id);
···
 	spin_lock(&port->phy_list_lock);
 
 	list_del_init(&phy->port_phy_el);
+	sas_phy_set_target(phy, NULL);
 	phy->port = NULL;
 	port->num_phys--;
 	port->phy_mask &= ~(1U << phy->id);