[SCSI] Add SATA support to libsas

Hook the scsi_host_template functions in libsas to delegate
functionality to libata when appropriate.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>

Misc code changes and merge fixes and update for libata->drivers/ata
move
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

drivers/scsi/aic94xx/aic94xx_init.c

@@ -81,6 +81,9 @@ static struct scsi_host_template aic94xx_sht = {
 	.use_clustering		= ENABLE_CLUSTERING,
 	.eh_device_reset_handler	= sas_eh_device_reset_handler,
 	.eh_bus_reset_handler	= sas_eh_bus_reset_handler,
+	.slave_alloc		= sas_slave_alloc,
+	.target_destroy		= sas_target_destroy,
+	.ioctl			= sas_ioctl,
 };
 
 static int __devinit asd_map_memio(struct asd_ha_struct *asd_ha)

drivers/scsi/libsas/sas_discover.c

@@ -255,6 +255,7 @@ static int sas_get_port_device(struct asd_sas_port *port)
 
 	switch (dev->dev_type) {
 	case SAS_END_DEV:
+	case SATA_DEV:
 		rphy = sas_end_device_alloc(port->port);
 		break;
 	case EDGE_DEV:
@@ -265,7 +266,6 @@ static int sas_get_port_device(struct asd_sas_port *port)
 		rphy = sas_expander_alloc(port->port,
 					  SAS_FANOUT_EXPANDER_DEVICE);
 		break;
-	case SATA_DEV:
 	default:
 		printk("ERROR: Unidentified device type %d\n", dev->dev_type);
 		rphy = NULL;
@@ -480,7 +480,14 @@ static int sas_discover_sata_dev(struct domain_device *dev)
 	   present.
 	sas_satl_register_dev(dev);
 	*/
-	return 0;
+
+	sas_fill_in_rphy(dev, dev->rphy);
+
+	res = sas_rphy_add(dev->rphy);
+	if (res)
+		goto out_err;
+
+	return res;
 out_err:
 	dev->sata_dev.identify_packet_device = NULL;
 	dev->sata_dev.identify_device = NULL;

include/scsi/libsas.h

@@ -30,6 +30,7 @@
 #include <linux/timer.h>
 #include <linux/pci.h>
 #include <scsi/sas.h>
+#include <linux/libata.h>
 #include <linux/list.h>
 #include <asm/semaphore.h>
 #include <scsi/scsi_device.h>
@@ -165,6 +166,13 @@ struct sata_device {
 
         u8     port_no;        /* port number, if this is a PM (Port) */
         struct list_head children; /* PM Ports if this is a PM */
+
+	struct ata_port *ap;
+	struct ata_host ata_host;
+	struct ata_taskfile tf;
+	u32 sstatus;
+	u32 serror;
+	u32 scontrol;
 };
 
 /* ---------- Domain device ---------- */
@@ -661,4 +669,8 @@ int __sas_task_abort(struct sas_task *);
 int sas_eh_device_reset_handler(struct scsi_cmnd *cmd);
 int sas_eh_bus_reset_handler(struct scsi_cmnd *cmd);
 
+extern void sas_target_destroy(struct scsi_target *);
+extern int sas_slave_alloc(struct scsi_device *);
+extern int sas_ioctl(struct scsi_device *sdev, int cmd, void __user *arg);
+
 #endif /* _SASLIB_H_ */