[SCSI] hpsa: bring format-in-progress drives online when ready

Do not expose drives that are undergoing a format immediately
to the OS, instead wait until they are ready before bringing
them online.  This is so that logical drives created with
"rapid parity initialization" do not get immediately kicked
off the system for being unresponsive.
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

drivers/scsi/hpsa.h

@@ -46,6 +46,7 @@ struct hpsa_scsi_dev_t {
 	unsigned char vendor[8];        /* bytes 8-15 of inquiry data */
 	unsigned char model[16];        /* bytes 16-31 of inquiry data */
 	unsigned char raid_level;	/* from inquiry page 0xC1 */
+	unsigned char volume_offline;	/* discovered via TUR or VPD */
 	u32 ioaccel_handle;
 	int offload_config;		/* I/O accel RAID offload configured */
 	int offload_enabled;		/* I/O accel RAID offload enabled */
@@ -197,10 +198,18 @@ struct ctlr_info {
 		CTLR_STATE_CHANGE_EVENT_REDUNDANT_CNTRL | \
 		CTLR_STATE_CHANGE_EVENT_AIO_ENABLED_DISABLED | \
 		CTLR_STATE_CHANGE_EVENT_AIO_CONFIG_CHANGE)
+	spinlock_t offline_device_lock;
+	struct list_head offline_device_list;
 	int	acciopath_status;
 	int	drv_req_rescan;	/* flag for driver to request rescan event */
 	int	raid_offload_debug;
 };
+
+struct offline_device_entry {
+	unsigned char scsi3addr[8];
+	struct list_head offline_list;
+};
+
 #define HPSA_ABORT_MSG 0
 #define HPSA_DEVICE_RESET_MSG 1
 #define HPSA_RESET_TYPE_CONTROLLER 0x00

drivers/scsi/hpsa_cmd.h

@@ -147,8 +147,23 @@
 #define HPSA_VPD_SUPPORTED_PAGES        0x00
 #define HPSA_VPD_LV_DEVICE_GEOMETRY     0xC1
 #define HPSA_VPD_LV_IOACCEL_STATUS      0xC2
+#define HPSA_VPD_LV_STATUS		0xC3
 #define HPSA_VPD_HEADER_SZ              4
 
+/* Logical volume states */
+#define HPSA_VPD_LV_STATUS_UNSUPPORTED			-1
+#define HPSA_LV_OK                                      0x0
+#define HPSA_LV_UNDERGOING_ERASE			0x0F
+#define HPSA_LV_UNDERGOING_RPI				0x12
+#define HPSA_LV_PENDING_RPI				0x13
+#define HPSA_LV_ENCRYPTED_NO_KEY			0x14
+#define HPSA_LV_PLAINTEXT_IN_ENCRYPT_ONLY_CONTROLLER	0x15
+#define HPSA_LV_UNDERGOING_ENCRYPTION			0x16
+#define HPSA_LV_UNDERGOING_ENCRYPTION_REKEYING		0x17
+#define HPSA_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER	0x18
+#define HPSA_LV_PENDING_ENCRYPTION			0x19
+#define HPSA_LV_PENDING_ENCRYPTION_REKEYING		0x1A
+
 struct vals32 {
 	u32   lower;
 	u32   upper;