[SCSI] fc_transport: Add an API to allow an LLD to create vports

[safe/jmp/linux-2.6] / include / scsi / scsi_device.h

diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h
index 4deb934..b49e725 100644 (file)
--- a/include/scsi/scsi_device.h
+++ b/include/scsi/scsi_device.h
@@ -6,6 +6,7 @@
 #include <linux/spinlock.h>
 #include <linux/workqueue.h>
 #include <linux/blkdev.h>
+#include <scsi/scsi.h>
 #include <asm/atomic.h>
 
 struct request_queue;
@@ -41,9 +42,11 @@ enum scsi_device_state {
                                 * originate in the mid-layer) */
        SDEV_OFFLINE,           /* Device offlined (by error handling or
                                 * user request */
-       SDEV_BLOCK,             /* Device blocked by scsi lld.  No scsi 
-                                * commands from user or midlayer should be issued
-                                * to the scsi lld. */
+       SDEV_BLOCK,             /* Device blocked by scsi lld.  No
+                                * scsi commands from user or midlayer
+                                * should be issued to the scsi
+                                * lld. */
+       SDEV_CREATED_BLOCK,     /* same as above but for created devices */
 };
 
 enum scsi_device_event {
@@ -140,7 +143,8 @@ struct scsi_device {
        unsigned fix_capacity:1;        /* READ_CAPACITY is too high by 1 */
        unsigned guess_capacity:1;      /* READ_CAPACITY might be too high by 1 */
        unsigned retry_hwerror:1;       /* Retry HARDWARE_ERROR */
-       unsigned last_sector_bug:1;     /* Always read last sector in a 1 sector read */
+       unsigned last_sector_bug:1;     /* do not use multisector accesses on
+                                          SD_LAST_BUGGY_SECTORS */
 
        DECLARE_BITMAP(supported_events, SDEV_EVT_MAXBITS); /* supported events */
        struct list_head event_list;    /* asserted events */
@@ -382,10 +386,23 @@ static inline unsigned int sdev_id(struct scsi_device *sdev)
 #define scmd_id(scmd) sdev_id((scmd)->device)
 #define scmd_channel(scmd) sdev_channel((scmd)->device)
 
+/*
+ * checks for positions of the SCSI state machine
+ */
 static inline int scsi_device_online(struct scsi_device *sdev)
 {
        return sdev->sdev_state != SDEV_OFFLINE;
 }
+static inline int scsi_device_blocked(struct scsi_device *sdev)
+{
+       return sdev->sdev_state == SDEV_BLOCK ||
+               sdev->sdev_state == SDEV_CREATED_BLOCK;
+}
+static inline int scsi_device_created(struct scsi_device *sdev)
+{
+       return sdev->sdev_state == SDEV_CREATED ||
+               sdev->sdev_state == SDEV_CREATED_BLOCK;
+}
 
 /* accessor functions for the SCSI parameters */
 static inline int scsi_device_sync(struct scsi_device *sdev)
@@ -423,6 +440,11 @@ static inline int scsi_device_enclosure(struct scsi_device *sdev)
        return sdev->inquiry[6] & (1<<6);
 }
 
+static inline int scsi_device_protection(struct scsi_device *sdev)
+{
+       return sdev->scsi_level > SCSI_2 && sdev->inquiry[5] & (1<<0);
+}
+
 #define MODULE_ALIAS_SCSI_DEVICE(type) \
        MODULE_ALIAS("scsi:t-" __stringify(type) "*")
 #define SCSI_DEVICE_MODALIAS_FMT "scsi:t-0x%02x"