[SCSI] zfcp: Keep ccw device and model id in zfcp_ccw.c
Christof Schmitt [Fri, 15 May 2009 11:18:21 +0000 (13:18 +0200)]
Keep the information about the device and model id in zfcp_ccw. This
requires an additional helper function to check for the privileged
cfdc subchannel, but it allows the removal of the redundant defines
from the zfcp_def header file.

Reviewed-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

drivers/s390/scsi/zfcp_ccw.c
drivers/s390/scsi/zfcp_def.h
drivers/s390/scsi/zfcp_ext.h
drivers/s390/scsi/zfcp_fsf.c

index 4f19b28..b2fe5cd 100644 (file)
 
 #include "zfcp_ext.h"
 
+#define ZFCP_MODEL_PRIV 0x4
+
+static struct ccw_device_id zfcp_ccw_device_id[] = {
+       { CCW_DEVICE_DEVTYPE(0x1731, 0x3, 0x1732, 0x3) },
+       { CCW_DEVICE_DEVTYPE(0x1731, 0x3, 0x1732, ZFCP_MODEL_PRIV) },
+       {},
+};
+MODULE_DEVICE_TABLE(ccw, zfcp_ccw_device_id);
+
+/**
+ * zfcp_ccw_priv_sch - check if subchannel is privileged
+ * @adapter: Adapter/Subchannel to check
+ */
+int zfcp_ccw_priv_sch(struct zfcp_adapter *adapter)
+{
+       return adapter->ccw_device->id.dev_model == ZFCP_MODEL_PRIV;
+}
+
 /**
  * zfcp_ccw_probe - probe function of zfcp driver
  * @ccw_device: pointer to belonging ccw device
@@ -199,14 +217,6 @@ static void zfcp_ccw_shutdown(struct ccw_device *cdev)
        up(&zfcp_data.config_sema);
 }
 
-static struct ccw_device_id zfcp_ccw_device_id[] = {
-       { CCW_DEVICE_DEVTYPE(0x1731, 0x3, 0x1732, 0x3) },
-       { CCW_DEVICE_DEVTYPE(0x1731, 0x3, 0x1732, 0x4) }, /* priv. */
-       {},
-};
-
-MODULE_DEVICE_TABLE(ccw, zfcp_ccw_device_id);
-
 static struct ccw_driver zfcp_ccw_driver = {
        .owner       = THIS_MODULE,
        .name        = "zfcp",
index 4c362a9..2074d45 100644 (file)
 
 /********************* CIO/QDIO SPECIFIC DEFINES *****************************/
 
-/* Adapter Identification Parameters */
-#define ZFCP_CONTROL_UNIT_TYPE  0x1731
-#define ZFCP_CONTROL_UNIT_MODEL 0x03
-#define ZFCP_DEVICE_TYPE        0x1732
-#define ZFCP_DEVICE_MODEL       0x03
-#define ZFCP_DEVICE_MODEL_PRIV 0x04
-
 /* DMQ bug workaround: don't use last SBALE */
 #define ZFCP_MAX_SBALES_PER_SBAL       (QDIO_MAX_ELEMENTS_PER_BUFFER - 1)
 
index 2e31b53..120a9a1 100644 (file)
@@ -27,6 +27,7 @@ extern int zfcp_sg_setup_table(struct scatterlist *, int);
 
 /* zfcp_ccw.c */
 extern int zfcp_ccw_register(void);
+extern int zfcp_ccw_priv_sch(struct zfcp_adapter *);
 extern struct zfcp_adapter *zfcp_get_adapter_by_busid(char *);
 
 /* zfcp_cfdc.c */
index 6fae268..e6dae37 100644 (file)
@@ -1887,7 +1887,7 @@ static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req)
 
                if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE) &&
                    (adapter->adapter_features & FSF_FEATURE_LUN_SHARING) &&
-                   (adapter->ccw_device->id.dev_model != ZFCP_DEVICE_MODEL_PRIV)) {
+                   !zfcp_ccw_priv_sch(adapter)) {
                        exclusive = (bottom->lun_access_info &
                                        FSF_UNIT_ACCESS_EXCLUSIVE);
                        readwrite = (bottom->lun_access_info &