|
|
@@ -30,6 +30,7 @@
|
|
|
|
|
|
#include <linux/kernel.h>
|
|
|
#include <linux/module.h>
|
|
|
+#include <linux/moduleparam.h>
|
|
|
#include <linux/mod_devicetable.h>
|
|
|
#include <linux/device.h>
|
|
|
#include <linux/scatterlist.h>
|
|
|
@@ -47,6 +48,18 @@
|
|
|
#include "fw-topology.h"
|
|
|
#include "fw-device.h"
|
|
|
|
|
|
+/*
|
|
|
+ * So far only bridges from Oxford Semiconductor are known to support
|
|
|
+ * concurrent logins. Depending on firmware, four or two concurrent logins
|
|
|
+ * are possible on OXFW911 and newer Oxsemi bridges.
|
|
|
+ *
|
|
|
+ * Concurrent logins are useful together with cluster filesystems.
|
|
|
+ */
|
|
|
+static int sbp2_param_exclusive_login = 1;
|
|
|
+module_param_named(exclusive_login, sbp2_param_exclusive_login, bool, 0644);
|
|
|
+MODULE_PARM_DESC(exclusive_login, "Exclusive login to sbp2 device "
|
|
|
+ "(default = Y, use N for concurrent initiators)");
|
|
|
+
|
|
|
/* I don't know why the SCSI stack doesn't define something like this... */
|
|
|
typedef void (*scsi_done_fn_t)(struct scsi_cmnd *);
|
|
|
|
|
|
@@ -155,7 +168,7 @@ struct sbp2_orb {
|
|
|
#define MANAGEMENT_ORB_LUN(v) ((v))
|
|
|
#define MANAGEMENT_ORB_FUNCTION(v) ((v) << 16)
|
|
|
#define MANAGEMENT_ORB_RECONNECT(v) ((v) << 20)
|
|
|
-#define MANAGEMENT_ORB_EXCLUSIVE ((1) << 28)
|
|
|
+#define MANAGEMENT_ORB_EXCLUSIVE(v) ((v) ? 1 << 28 : 0)
|
|
|
#define MANAGEMENT_ORB_REQUEST_FORMAT(v) ((v) << 29)
|
|
|
#define MANAGEMENT_ORB_NOTIFY ((1) << 31)
|
|
|
|
|
|
@@ -431,14 +444,9 @@ sbp2_send_management_orb(struct fw_unit *unit, int node_id, int generation,
|
|
|
orb->request.status_fifo.high = sd->address_handler.offset >> 32;
|
|
|
orb->request.status_fifo.low = sd->address_handler.offset;
|
|
|
|
|
|
- /*
|
|
|
- * FIXME: Yeah, ok this isn't elegant, we hardwire exclusive
|
|
|
- * login and 1 second reconnect time. The reconnect setting
|
|
|
- * is probably fine, but the exclusive login should be an option.
|
|
|
- */
|
|
|
if (function == SBP2_LOGIN_REQUEST) {
|
|
|
orb->request.misc |=
|
|
|
- MANAGEMENT_ORB_EXCLUSIVE |
|
|
|
+ MANAGEMENT_ORB_EXCLUSIVE(sbp2_param_exclusive_login) |
|
|
|
MANAGEMENT_ORB_RECONNECT(0);
|
|
|
}
|
|
|
|
Stefan Richter