1 files changed, 62 insertions, 20 deletions

diff --git a/drivers/scsi/ibmvscsi/ibmvscsi.c b/drivers/scsi/ibmvscsi/ibmvscsi.c
index 5ecc63d1b43..22d91ee173c 100644
--- a/drivers/scsi/ibmvscsi/ibmvscsi.c
+++ b/drivers/scsi/ibmvscsi/ibmvscsi.c
@@ -70,11 +70,13 @@
 #include <linux/moduleparam.h>
 #include <linux/dma-mapping.h>
 #include <linux/delay.h>
+#include <asm/firmware.h>
 #include <asm/vio.h>
 #include <scsi/scsi.h>
 #include <scsi/scsi_cmnd.h>
 #include <scsi/scsi_host.h>
 #include <scsi/scsi_device.h>
+#include <scsi/scsi_transport_srp.h>
 #include "ibmvscsi.h"
 
 /* The values below are somewhat arbitrary default values, but 
@@ -87,8 +89,12 @@ static int max_channel = 3;
 static int init_timeout = 5;
 static int max_requests = IBMVSCSI_MAX_REQUESTS_DEFAULT;
 
+static struct scsi_transport_template *ibmvscsi_transport_template;
+
 #define IBMVSCSI_VERSION "1.5.8"
 
+static struct ibmvscsi_ops *ibmvscsi_ops;
+
 MODULE_DESCRIPTION("IBM Virtual SCSI");
 MODULE_AUTHOR("Dave Boutcher");
 MODULE_LICENSE("GPL");
@@ -506,8 +512,8 @@ static void ibmvscsi_reset_host(struct ibmvscsi_host_data *hostdata)
 	atomic_set(&hostdata->request_limit, 0);
 
 	purge_requests(hostdata, DID_ERROR);
-	if ((ibmvscsi_reset_crq_queue(&hostdata->queue, hostdata)) ||
-	    (ibmvscsi_send_crq(hostdata, 0xC001000000000000LL, 0)) ||
+	if ((ibmvscsi_ops->reset_crq_queue(&hostdata->queue, hostdata)) ||
+	    (ibmvscsi_ops->send_crq(hostdata, 0xC001000000000000LL, 0)) ||
 	    (vio_enable_interrupts(to_vio_dev(hostdata->dev)))) {
 		atomic_set(&hostdata->request_limit, -1);
 		dev_err(hostdata->dev, "error after reset\n");
@@ -612,7 +618,7 @@ static int ibmvscsi_send_srp_event(struct srp_event_struct *evt_struct,
 	}
 
 	if ((rc =
-	     ibmvscsi_send_crq(hostdata, crq_as_u64[0], crq_as_u64[1])) != 0) {
+	     ibmvscsi_ops->send_crq(hostdata, crq_as_u64[0], crq_as_u64[1])) != 0) {
 		list_del(&evt_struct->list);
 		del_timer(&evt_struct->timer);
 
@@ -1211,8 +1217,8 @@ void ibmvscsi_handle_crq(struct viosrp_crq *crq,
 		case 0x01:	/* Initialization message */
 			dev_info(hostdata->dev, "partner initialized\n");
 			/* Send back a response */
-			if ((rc = ibmvscsi_send_crq(hostdata,
-						    0xC002000000000000LL, 0)) == 0) {
+			if ((rc = ibmvscsi_ops->send_crq(hostdata,
+							 0xC002000000000000LL, 0)) == 0) {
 				/* Now login */
 				send_srp_login(hostdata);
 			} else {
@@ -1237,10 +1243,10 @@ void ibmvscsi_handle_crq(struct viosrp_crq *crq,
 			/* We need to re-setup the interpartition connection */
 			dev_info(hostdata->dev, "Re-enabling adapter!\n");
 			purge_requests(hostdata, DID_REQUEUE);
-			if ((ibmvscsi_reenable_crq_queue(&hostdata->queue,
-							hostdata)) ||
-			    (ibmvscsi_send_crq(hostdata,
-					       0xC001000000000000LL, 0))) {
+			if ((ibmvscsi_ops->reenable_crq_queue(&hostdata->queue,
+							      hostdata)) ||
+			    (ibmvscsi_ops->send_crq(hostdata,
+						    0xC001000000000000LL, 0))) {
 					atomic_set(&hostdata->request_limit,
 						   -1);
 					dev_err(hostdata->dev, "error after enable\n");
@@ -1250,10 +1256,10 @@ void ibmvscsi_handle_crq(struct viosrp_crq *crq,
 				crq->format);
 
 			purge_requests(hostdata, DID_ERROR);
-			if ((ibmvscsi_reset_crq_queue(&hostdata->queue,
-							hostdata)) ||
-			    (ibmvscsi_send_crq(hostdata,
-					       0xC001000000000000LL, 0))) {
+			if ((ibmvscsi_ops->reset_crq_queue(&hostdata->queue,
+							   hostdata)) ||
+			    (ibmvscsi_ops->send_crq(hostdata,
+						    0xC001000000000000LL, 0))) {
 					atomic_set(&hostdata->request_limit,
 						   -1);
 					dev_err(hostdata->dev, "error after reset\n");
@@ -1542,6 +1548,7 @@ static struct scsi_host_template driver_template = {
 	.this_id = -1,
 	.sg_tablesize = SG_ALL,
 	.use_clustering = ENABLE_CLUSTERING,
+	.use_sg_chaining = ENABLE_SG_CHAINING,
 	.shost_attrs = ibmvscsi_attrs,
 };
 
@@ -1553,6 +1560,8 @@ static int ibmvscsi_probe(struct vio_dev *vdev, const struct vio_device_id *id)
 	struct ibmvscsi_host_data *hostdata;
 	struct Scsi_Host *host;
 	struct device *dev = &vdev->dev;
+	struct srp_rport_identifiers ids;
+	struct srp_rport *rport;
 	unsigned long wait_switch = 0;
 	int rc;
 
@@ -1565,6 +1574,7 @@ static int ibmvscsi_probe(struct vio_dev *vdev, const struct vio_device_id *id)
 		goto scsi_host_alloc_failed;
 	}
 
+	host->transportt = ibmvscsi_transport_template;
 	hostdata = shost_priv(host);
 	memset(hostdata, 0x00, sizeof(*hostdata));
 	INIT_LIST_HEAD(&hostdata->sent);
@@ -1573,7 +1583,7 @@ static int ibmvscsi_probe(struct vio_dev *vdev, const struct vio_device_id *id)
 	atomic_set(&hostdata->request_limit, -1);
 	hostdata->host->max_sectors = 32 * 8; /* default max I/O 32 pages */
 
-	rc = ibmvscsi_init_crq_queue(&hostdata->queue, hostdata, max_requests);
+	rc = ibmvscsi_ops->init_crq_queue(&hostdata->queue, hostdata, max_requests);
 	if (rc != 0 && rc != H_RESOURCE) {
 		dev_err(&vdev->dev, "couldn't initialize crq. rc=%d\n", rc);
 		goto init_crq_failed;
@@ -1590,11 +1600,19 @@ static int ibmvscsi_probe(struct vio_dev *vdev, const struct vio_device_id *id)
 	if (scsi_add_host(hostdata->host, hostdata->dev))
 		goto add_host_failed;
 
+	/* we don't have a proper target_port_id so let's use the fake one */
+	memcpy(ids.port_id, hostdata->madapter_info.partition_name,
+	       sizeof(ids.port_id));
+	ids.roles = SRP_RPORT_ROLE_TARGET;
+	rport = srp_rport_add(host, &ids);
+	if (IS_ERR(rport))
+		goto add_srp_port_failed;
+
 	/* Try to send an initialization message.  Note that this is allowed
 	 * to fail if the other end is not acive.  In that case we don't
 	 * want to scan
 	 */
-	if (ibmvscsi_send_crq(hostdata, 0xC001000000000000LL, 0) == 0
+	if (ibmvscsi_ops->send_crq(hostdata, 0xC001000000000000LL, 0) == 0
 	    || rc == H_RESOURCE) {
 		/*
 		 * Wait around max init_timeout secs for the adapter to finish
@@ -1617,10 +1635,12 @@ static int ibmvscsi_probe(struct vio_dev *vdev, const struct vio_device_id *id)
 	vdev->dev.driver_data = hostdata;
 	return 0;
 
+      add_srp_port_failed:
+	scsi_remove_host(hostdata->host);
       add_host_failed:
 	release_event_pool(&hostdata->pool, hostdata);
       init_pool_failed:
-	ibmvscsi_release_crq_queue(&hostdata->queue, hostdata, max_requests);
+	ibmvscsi_ops->release_crq_queue(&hostdata->queue, hostdata, max_requests);
       init_crq_failed:
 	scsi_host_put(host);
       scsi_host_alloc_failed:
@@ -1631,9 +1651,10 @@ static int ibmvscsi_remove(struct vio_dev *vdev)
 {
 	struct ibmvscsi_host_data *hostdata = vdev->dev.driver_data;
 	release_event_pool(&hostdata->pool, hostdata);
-	ibmvscsi_release_crq_queue(&hostdata->queue, hostdata,
-				   max_requests);
-	
+	ibmvscsi_ops->release_crq_queue(&hostdata->queue, hostdata,
+					max_requests);
+
+	srp_remove_host(hostdata->host);
 	scsi_remove_host(hostdata->host);
 	scsi_host_put(hostdata->host);
 
@@ -1660,14 +1681,35 @@ static struct vio_driver ibmvscsi_driver = {
 	}
 };
 
+static struct srp_function_template ibmvscsi_transport_functions = {
+};
+
 int __init ibmvscsi_module_init(void)
 {
-	return vio_register_driver(&ibmvscsi_driver);
+	int ret;
+
+	if (firmware_has_feature(FW_FEATURE_ISERIES))
+		ibmvscsi_ops = &iseriesvscsi_ops;
+	else if (firmware_has_feature(FW_FEATURE_VIO))
+		ibmvscsi_ops = &rpavscsi_ops;
+	else
+		return -ENODEV;
+
+	ibmvscsi_transport_template =
+		srp_attach_transport(&ibmvscsi_transport_functions);
+	if (!ibmvscsi_transport_template)
+		return -ENOMEM;
+
+	ret = vio_register_driver(&ibmvscsi_driver);
+	if (ret)
+		srp_release_transport(ibmvscsi_transport_template);
+	return ret;
 }
 
 void __exit ibmvscsi_module_exit(void)
 {
 	vio_unregister_driver(&ibmvscsi_driver);
+	srp_release_transport(ibmvscsi_transport_template);
 }
 
 module_init(ibmvscsi_module_init);