Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 1121 insertions, 0 deletions

diff --git a/drivers/s390/scsi/zfcp_def.h b/drivers/s390/scsi/zfcp_def.h
new file mode 100644
index 000000000000..53fcccbb424c
--- /dev/null
+++ b/drivers/s390/scsi/zfcp_def.h
@@ -0,0 +1,1121 @@
+/* 
+ * 
+ * linux/drivers/s390/scsi/zfcp_def.h
+ * 
+ * FCP adapter driver for IBM eServer zSeries 
+ * 
+ * (C) Copyright IBM Corp. 2002, 2004
+ *
+ * Author(s): Martin Peschke <mpeschke@de.ibm.com> 
+ *            Raimund Schroeder <raimund.schroeder@de.ibm.com> 
+ *            Aron Zeh
+ *            Wolfgang Taphorn
+ *            Stefan Bader <stefan.bader@de.ibm.com> 
+ *            Heiko Carstens <heiko.carstens@de.ibm.com> 
+ *            Andreas Herrmann <aherrman@de.ibm.com>
+ *            Volker Sameske <sameske@de.ibm.com>
+ * 
+ * This program is free software; you can redistribute it and/or modify 
+ * it under the terms of the GNU General Public License as published by 
+ * the Free Software Foundation; either version 2, or (at your option) 
+ * any later version. 
+ * 
+ * This program is distributed in the hope that it will be useful, 
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of 
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
+ * GNU General Public License for more details. 
+ * 
+ * You should have received a copy of the GNU General Public License 
+ * along with this program; if not, write to the Free Software 
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 
+ */ 
+
+
+#ifndef ZFCP_DEF_H
+#define ZFCP_DEF_H
+
+#define ZFCP_DEF_REVISION "$Revision: 1.111 $"
+
+/*************************** INCLUDES *****************************************/
+
+#include <linux/init.h>
+#include <linux/moduleparam.h>
+#include <linux/miscdevice.h>
+#include <linux/major.h>
+#include <linux/blkdev.h>
+#include <linux/delay.h>
+#include <linux/timer.h>
+#include <scsi/scsi.h>
+#include <scsi/scsi_tcq.h>
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi_host.h>
+#include <scsi/scsi_transport.h>
+#include <scsi/scsi_transport_fc.h>
+#include "../../fc4/fc.h"
+#include "zfcp_fsf.h"
+#include <asm/ccwdev.h>
+#include <asm/qdio.h>
+#include <asm/debug.h>
+#include <asm/ebcdic.h>
+#include <linux/mempool.h>
+#include <linux/syscalls.h>
+#include <linux/ioctl.h>
+#include <linux/ioctl32.h>
+
+/************************ DEBUG FLAGS *****************************************/
+
+#define	ZFCP_PRINT_FLAGS
+
+/********************* GENERAL DEFINES *********************************/
+
+/* zfcp version number, it consists of major, minor, and patch-level number */
+#define ZFCP_VERSION		"4.2.0"
+
+/**
+ * zfcp_sg_to_address - determine kernel address from struct scatterlist
+ * @list: struct scatterlist
+ * Return: kernel address
+ */
+static inline void *
+zfcp_sg_to_address(struct scatterlist *list)
+{
+	return (void *) (page_address(list->page) + list->offset);
+}
+
+/**
+ * zfcp_address_to_sg - set up struct scatterlist from kernel address
+ * @address: kernel address
+ * @list: struct scatterlist
+ */
+static inline void
+zfcp_address_to_sg(void *address, struct scatterlist *list)
+{
+	list->page = virt_to_page(address);
+	list->offset = ((unsigned long) address) & (PAGE_SIZE - 1);
+}
+
+/********************* SCSI SPECIFIC DEFINES *********************************/
+
+/* 32 bit for SCSI ID and LUN as long as the SCSI stack uses this type */
+typedef u32 scsi_id_t;
+typedef u32 scsi_lun_t;
+
+#define ZFCP_ERP_SCSI_LOW_MEM_TIMEOUT           (100*HZ)
+#define ZFCP_SCSI_ER_TIMEOUT                    (100*HZ)
+
+/********************* 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
+ 
+/* allow as many chained SBALs as are supported by hardware */
+#define ZFCP_MAX_SBALS_PER_REQ		FSF_MAX_SBALS_PER_REQ
+#define ZFCP_MAX_SBALS_PER_CT_REQ	FSF_MAX_SBALS_PER_REQ
+#define ZFCP_MAX_SBALS_PER_ELS_REQ	FSF_MAX_SBALS_PER_ELS_REQ
+
+/* DMQ bug workaround: don't use last SBALE */
+#define ZFCP_MAX_SBALES_PER_SBAL	(QDIO_MAX_ELEMENTS_PER_BUFFER - 1)
+
+/* index of last SBALE (with respect to DMQ bug workaround) */
+#define ZFCP_LAST_SBALE_PER_SBAL	(ZFCP_MAX_SBALES_PER_SBAL - 1)
+
+/* max. number of (data buffer) SBALEs in largest SBAL chain */
+#define ZFCP_MAX_SBALES_PER_REQ		\
+	(ZFCP_MAX_SBALS_PER_REQ * ZFCP_MAX_SBALES_PER_SBAL - 2)
+        /* request ID + QTCB in SBALE 0 + 1 of first SBAL in chain */
+
+/* FIXME(tune): free space should be one max. SBAL chain plus what? */
+#define ZFCP_QDIO_PCI_INTERVAL		(QDIO_MAX_BUFFERS_PER_Q \
+                                         - (ZFCP_MAX_SBALS_PER_REQ + 4))
+
+#define ZFCP_SBAL_TIMEOUT               (5*HZ)
+
+#define ZFCP_TYPE2_RECOVERY_TIME        (8*HZ)
+
+/* queue polling (values in microseconds) */
+#define ZFCP_MAX_INPUT_THRESHOLD 	5000	/* FIXME: tune */
+#define ZFCP_MAX_OUTPUT_THRESHOLD 	1000	/* FIXME: tune */
+#define ZFCP_MIN_INPUT_THRESHOLD 	1	/* ignored by QDIO layer */
+#define ZFCP_MIN_OUTPUT_THRESHOLD 	1	/* ignored by QDIO layer */
+
+#define QDIO_SCSI_QFMT			1	/* 1 for FSF */
+
+/********************* FSF SPECIFIC DEFINES *********************************/
+
+#define ZFCP_ULP_INFO_VERSION                   26
+#define ZFCP_QTCB_VERSION	FSF_QTCB_CURRENT_VERSION
+/* ATTENTION: value must not be used by hardware */
+#define FSF_QTCB_UNSOLICITED_STATUS		0x6305
+#define ZFCP_STATUS_READ_FAILED_THRESHOLD	3
+#define ZFCP_STATUS_READS_RECOM		        FSF_STATUS_READS_RECOM
+#define ZFCP_EXCHANGE_CONFIG_DATA_RETRIES	6
+#define ZFCP_EXCHANGE_CONFIG_DATA_SLEEP		50
+
+/* timeout value for "default timer" for fsf requests */
+#define ZFCP_FSF_REQUEST_TIMEOUT (60*HZ);
+
+/*************** FIBRE CHANNEL PROTOCOL SPECIFIC DEFINES ********************/
+
+typedef unsigned long long wwn_t;
+typedef unsigned int       fc_id_t;
+typedef unsigned long long fcp_lun_t;
+/* data length field may be at variable position in FCP-2 FCP_CMND IU */
+typedef unsigned int       fcp_dl_t;
+
+#define ZFCP_FC_SERVICE_CLASS_DEFAULT	FSF_CLASS_3
+
+/* timeout for name-server lookup (in seconds) */
+#define ZFCP_NS_GID_PN_TIMEOUT		10
+
+/* largest SCSI command we can process */
+/* FCP-2 (FCP_CMND IU) allows up to (255-3+16) */
+#define ZFCP_MAX_SCSI_CMND_LENGTH	255
+/* maximum number of commands in LUN queue (tagged queueing) */
+#define ZFCP_CMND_PER_LUN               32
+
+/* task attribute values in FCP-2 FCP_CMND IU */
+#define SIMPLE_Q	0
+#define HEAD_OF_Q	1
+#define ORDERED_Q	2
+#define ACA_Q		4
+#define UNTAGGED	5
+
+/* task management flags in FCP-2 FCP_CMND IU */
+#define FCP_CLEAR_ACA		0x40
+#define FCP_TARGET_RESET	0x20
+#define FCP_LOGICAL_UNIT_RESET	0x10
+#define FCP_CLEAR_TASK_SET	0x04
+#define FCP_ABORT_TASK_SET	0x02
+
+#define FCP_CDB_LENGTH		16
+
+#define ZFCP_DID_MASK           0x00FFFFFF
+
+/* FCP(-2) FCP_CMND IU */
+struct fcp_cmnd_iu {
+	fcp_lun_t fcp_lun;	   /* FCP logical unit number */
+	u8  crn;	           /* command reference number */
+	u8  reserved0:5;	   /* reserved */
+	u8  task_attribute:3;	   /* task attribute */
+	u8  task_management_flags; /* task management flags */
+	u8  add_fcp_cdb_length:6;  /* additional FCP_CDB length */
+	u8  rddata:1;              /* read data */
+	u8  wddata:1;              /* write data */
+	u8  fcp_cdb[FCP_CDB_LENGTH];
+} __attribute__((packed));
+
+/* FCP(-2) FCP_RSP IU */
+struct fcp_rsp_iu {
+	u8  reserved0[10];
+	union {
+		struct {
+			u8 reserved1:3;
+			u8 fcp_conf_req:1;
+			u8 fcp_resid_under:1;
+			u8 fcp_resid_over:1;
+			u8 fcp_sns_len_valid:1;
+			u8 fcp_rsp_len_valid:1;
+		} bits;
+		u8 value;
+	} validity;
+	u8  scsi_status;
+	u32 fcp_resid;
+	u32 fcp_sns_len;
+	u32 fcp_rsp_len;
+} __attribute__((packed));
+
+
+#define RSP_CODE_GOOD		 0
+#define RSP_CODE_LENGTH_MISMATCH 1
+#define RSP_CODE_FIELD_INVALID	 2
+#define RSP_CODE_RO_MISMATCH	 3
+#define RSP_CODE_TASKMAN_UNSUPP	 4
+#define RSP_CODE_TASKMAN_FAILED	 5
+
+/* see fc-fs */
+#define LS_FAN 0x60000000
+#define LS_RSCN 0x61040000
+
+struct fcp_rscn_head {
+        u8  command;
+        u8  page_length; /* always 0x04 */
+        u16 payload_len;
+} __attribute__((packed));
+
+struct fcp_rscn_element {
+        u8  reserved:2;
+        u8  event_qual:4;
+        u8  addr_format:2;
+        u32 nport_did:24;
+} __attribute__((packed));
+
+#define ZFCP_PORT_ADDRESS   0x0
+#define ZFCP_AREA_ADDRESS   0x1
+#define ZFCP_DOMAIN_ADDRESS 0x2
+#define ZFCP_FABRIC_ADDRESS 0x3
+
+#define ZFCP_PORTS_RANGE_PORT   0xFFFFFF
+#define ZFCP_PORTS_RANGE_AREA   0xFFFF00
+#define ZFCP_PORTS_RANGE_DOMAIN 0xFF0000
+#define ZFCP_PORTS_RANGE_FABRIC 0x000000
+
+#define ZFCP_NO_PORTS_PER_AREA    0x100
+#define ZFCP_NO_PORTS_PER_DOMAIN  0x10000
+#define ZFCP_NO_PORTS_PER_FABRIC  0x1000000
+
+struct fcp_fan {
+        u32 command;
+        u32 fport_did;
+        wwn_t fport_wwpn;
+        wwn_t fport_wwname;
+} __attribute__((packed));
+
+/* see fc-ph */
+struct fcp_logo {
+        u32 command;
+        u32 nport_did;
+        wwn_t nport_wwpn;
+} __attribute__((packed));
+
+/*
+ * FC-FS stuff
+ */
+#define R_A_TOV				10 /* seconds */
+#define ZFCP_ELS_TIMEOUT		(2 * R_A_TOV)
+
+#define ZFCP_LS_RLS			0x0f
+#define ZFCP_LS_ADISC			0x52
+#define ZFCP_LS_RPS			0x56
+#define ZFCP_LS_RSCN			0x61
+#define ZFCP_LS_RNID			0x78
+
+struct zfcp_ls_rjt_par {
+	u8 action;
+ 	u8 reason_code;
+ 	u8 reason_expl;
+ 	u8 vendor_unique;
+} __attribute__ ((packed));
+
+struct zfcp_ls_adisc {
+	u8		code;
+	u8		field[3];
+	u32		hard_nport_id;
+	u64		wwpn;
+	u64		wwnn;
+	u32		nport_id;
+} __attribute__ ((packed));
+
+struct zfcp_ls_adisc_acc {
+	u8		code;
+	u8		field[3];
+	u32		hard_nport_id;
+	u64		wwpn;
+	u64		wwnn;
+	u32		nport_id;
+} __attribute__ ((packed));
+
+struct zfcp_rc_entry {
+	u8 code;
+	const char *description;
+};
+
+/*
+ * FC-GS-2 stuff
+ */
+#define ZFCP_CT_REVISION		0x01
+#define ZFCP_CT_DIRECTORY_SERVICE	0xFC
+#define ZFCP_CT_NAME_SERVER		0x02
+#define ZFCP_CT_SYNCHRONOUS		0x00
+#define ZFCP_CT_GID_PN			0x0121
+#define ZFCP_CT_MAX_SIZE		0x1020
+#define ZFCP_CT_ACCEPT			0x8002
+#define ZFCP_CT_REJECT			0x8001
+
+/*
+ * FC-GS-4 stuff
+ */
+#define ZFCP_CT_TIMEOUT			(3 * R_A_TOV)
+
+
+/***************** S390 DEBUG FEATURE SPECIFIC DEFINES ***********************/
+
+/* debug feature entries per adapter */
+#define ZFCP_ERP_DBF_INDEX     1 
+#define ZFCP_ERP_DBF_AREAS     2
+#define ZFCP_ERP_DBF_LENGTH    16
+#define ZFCP_ERP_DBF_LEVEL     3
+#define ZFCP_ERP_DBF_NAME      "zfcperp"
+
+#define ZFCP_CMD_DBF_INDEX     2
+#define ZFCP_CMD_DBF_AREAS     1
+#define ZFCP_CMD_DBF_LENGTH    8
+#define ZFCP_CMD_DBF_LEVEL     3
+#define ZFCP_CMD_DBF_NAME      "zfcpcmd"
+
+#define ZFCP_ABORT_DBF_INDEX   2
+#define ZFCP_ABORT_DBF_AREAS   1
+#define ZFCP_ABORT_DBF_LENGTH  8
+#define ZFCP_ABORT_DBF_LEVEL   6
+#define ZFCP_ABORT_DBF_NAME    "zfcpabt"
+
+#define ZFCP_IN_ELS_DBF_INDEX  2
+#define ZFCP_IN_ELS_DBF_AREAS  1
+#define ZFCP_IN_ELS_DBF_LENGTH 8
+#define ZFCP_IN_ELS_DBF_LEVEL  6
+#define ZFCP_IN_ELS_DBF_NAME   "zfcpels"
+
+/******************** LOGGING MACROS AND DEFINES *****************************/
+
+/*
+ * Logging may be applied on certain kinds of driver operations
+ * independently. Additionally, different log-levels are supported for
+ * each of these areas.
+ */
+
+#define ZFCP_NAME               "zfcp"
+
+/* read-only LUN sharing switch initial value */
+#define ZFCP_RO_LUN_SHARING_DEFAULTS 0
+
+/* independent log areas */
+#define ZFCP_LOG_AREA_OTHER	0
+#define ZFCP_LOG_AREA_SCSI	1
+#define ZFCP_LOG_AREA_FSF	2
+#define ZFCP_LOG_AREA_CONFIG	3
+#define ZFCP_LOG_AREA_CIO	4
+#define ZFCP_LOG_AREA_QDIO	5
+#define ZFCP_LOG_AREA_ERP	6
+#define ZFCP_LOG_AREA_FC	7
+
+/* log level values*/
+#define ZFCP_LOG_LEVEL_NORMAL	0
+#define ZFCP_LOG_LEVEL_INFO	1
+#define ZFCP_LOG_LEVEL_DEBUG	2
+#define ZFCP_LOG_LEVEL_TRACE	3
+
+/*
+ * this allows removal of logging code by the preprocessor
+ * (the most detailed log level still to be compiled in is specified, 
+ * higher log levels are removed)
+ */
+#define ZFCP_LOG_LEVEL_LIMIT	ZFCP_LOG_LEVEL_TRACE
+
+/* get "loglevel" nibble assignment */
+#define ZFCP_GET_LOG_VALUE(zfcp_lognibble) \
+	       ((atomic_read(&zfcp_data.loglevel) >> (zfcp_lognibble<<2)) & 0xF)
+
+/* set "loglevel" nibble */
+#define ZFCP_SET_LOG_NIBBLE(value, zfcp_lognibble) \
+	       (value << (zfcp_lognibble << 2))
+
+/* all log-level defaults are combined to generate initial log-level */
+#define ZFCP_LOG_LEVEL_DEFAULTS \
+	(ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_NORMAL, ZFCP_LOG_AREA_OTHER) | \
+	 ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_NORMAL, ZFCP_LOG_AREA_SCSI) | \
+	 ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_NORMAL, ZFCP_LOG_AREA_FSF) | \
+	 ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_NORMAL, ZFCP_LOG_AREA_CONFIG) | \
+	 ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_NORMAL, ZFCP_LOG_AREA_CIO) | \
+	 ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_NORMAL, ZFCP_LOG_AREA_QDIO) | \
+	 ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_NORMAL, ZFCP_LOG_AREA_ERP) | \
+	 ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_NORMAL, ZFCP_LOG_AREA_FC))
+
+/* check whether we have the right level for logging */
+#define ZFCP_LOG_CHECK(level) \
+	((ZFCP_GET_LOG_VALUE(ZFCP_LOG_AREA)) >= level)
+
+/* logging routine for zfcp */
+#define _ZFCP_LOG(fmt, args...) \
+	printk(KERN_ERR ZFCP_NAME": %s(%d): " fmt, __FUNCTION__, \
+	       __LINE__ , ##args)
+
+#define ZFCP_LOG(level, fmt, args...) \
+do { \
+	if (ZFCP_LOG_CHECK(level)) \
+		_ZFCP_LOG(fmt, ##args); \
+} while (0)
+	
+#if ZFCP_LOG_LEVEL_LIMIT < ZFCP_LOG_LEVEL_NORMAL
+# define ZFCP_LOG_NORMAL(fmt, args...)
+#else
+# define ZFCP_LOG_NORMAL(fmt, args...) \
+do { \
+	if (ZFCP_LOG_CHECK(ZFCP_LOG_LEVEL_NORMAL)) \
+		printk(KERN_ERR ZFCP_NAME": " fmt, ##args); \
+} while (0)
+#endif
+
+#if ZFCP_LOG_LEVEL_LIMIT < ZFCP_LOG_LEVEL_INFO
+# define ZFCP_LOG_INFO(fmt, args...)
+#else
+# define ZFCP_LOG_INFO(fmt, args...) \
+do { \
+	if (ZFCP_LOG_CHECK(ZFCP_LOG_LEVEL_INFO)) \
+		printk(KERN_ERR ZFCP_NAME": " fmt, ##args); \
+} while (0)
+#endif
+
+#if ZFCP_LOG_LEVEL_LIMIT < ZFCP_LOG_LEVEL_DEBUG
+# define ZFCP_LOG_DEBUG(fmt, args...)
+#else
+# define ZFCP_LOG_DEBUG(fmt, args...) \
+	ZFCP_LOG(ZFCP_LOG_LEVEL_DEBUG, fmt , ##args)
+#endif
+
+#if ZFCP_LOG_LEVEL_LIMIT < ZFCP_LOG_LEVEL_TRACE
+# define ZFCP_LOG_TRACE(fmt, args...)
+#else
+# define ZFCP_LOG_TRACE(fmt, args...) \
+	ZFCP_LOG(ZFCP_LOG_LEVEL_TRACE, fmt , ##args)
+#endif
+
+#ifndef ZFCP_PRINT_FLAGS
+# define ZFCP_LOG_FLAGS(level, fmt, args...)
+#else
+extern u32 flags_dump;
+# define ZFCP_LOG_FLAGS(level, fmt, args...) \
+do { \
+	if (level <= flags_dump) \
+		_ZFCP_LOG(fmt, ##args); \
+} while (0)
+#endif
+
+/*************** ADAPTER/PORT/UNIT AND FSF_REQ STATUS FLAGS ******************/
+
+/* 
+ * Note, the leftmost status byte is common among adapter, port 
+ * and unit
+ */
+#define ZFCP_COMMON_FLAGS			0xfff00000
+#define ZFCP_SPECIFIC_FLAGS			0x000fffff
+
+/* common status bits */
+#define ZFCP_STATUS_COMMON_REMOVE		0x80000000
+#define ZFCP_STATUS_COMMON_RUNNING		0x40000000
+#define ZFCP_STATUS_COMMON_ERP_FAILED		0x20000000
+#define ZFCP_STATUS_COMMON_UNBLOCKED		0x10000000
+#define ZFCP_STATUS_COMMON_OPENING              0x08000000
+#define ZFCP_STATUS_COMMON_OPEN                 0x04000000
+#define ZFCP_STATUS_COMMON_CLOSING              0x02000000
+#define ZFCP_STATUS_COMMON_ERP_INUSE		0x01000000
+#define ZFCP_STATUS_COMMON_ACCESS_DENIED	0x00800000
+
+/* adapter status */
+#define ZFCP_STATUS_ADAPTER_QDIOUP		0x00000002
+#define ZFCP_STATUS_ADAPTER_REGISTERED		0x00000004
+#define ZFCP_STATUS_ADAPTER_XCONFIG_OK		0x00000008
+#define ZFCP_STATUS_ADAPTER_HOST_CON_INIT	0x00000010
+#define ZFCP_STATUS_ADAPTER_ERP_THREAD_UP	0x00000020
+#define ZFCP_STATUS_ADAPTER_ERP_THREAD_KILL	0x00000080
+#define ZFCP_STATUS_ADAPTER_ERP_PENDING		0x00000100
+#define ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED	0x00000200
+
+#define ZFCP_STATUS_ADAPTER_SCSI_UP			\
+		(ZFCP_STATUS_COMMON_UNBLOCKED |	\
+		 ZFCP_STATUS_ADAPTER_REGISTERED)
+
+
+/* FC-PH/FC-GS well-known address identifiers for generic services */
+#define ZFCP_DID_MANAGEMENT_SERVICE		0xFFFFFA
+#define ZFCP_DID_TIME_SERVICE			0xFFFFFB
+#define ZFCP_DID_DIRECTORY_SERVICE		0xFFFFFC
+#define ZFCP_DID_ALIAS_SERVICE			0xFFFFF8
+#define ZFCP_DID_KEY_DISTRIBUTION_SERVICE	0xFFFFF7
+
+/* remote port status */
+#define ZFCP_STATUS_PORT_PHYS_OPEN		0x00000001
+#define ZFCP_STATUS_PORT_DID_DID		0x00000002
+#define ZFCP_STATUS_PORT_PHYS_CLOSING		0x00000004
+#define ZFCP_STATUS_PORT_NO_WWPN		0x00000008
+#define ZFCP_STATUS_PORT_NO_SCSI_ID		0x00000010
+#define ZFCP_STATUS_PORT_INVALID_WWPN		0x00000020
+#define ZFCP_STATUS_PORT_ACCESS_DENIED		0x00000040
+
+/* for ports with well known addresses */
+#define ZFCP_STATUS_PORT_WKA \
+		(ZFCP_STATUS_PORT_NO_WWPN | \
+		 ZFCP_STATUS_PORT_NO_SCSI_ID)
+
+/* logical unit status */
+#define ZFCP_STATUS_UNIT_NOTSUPPUNITRESET	0x00000001
+#define ZFCP_STATUS_UNIT_TEMPORARY		0x00000002
+#define ZFCP_STATUS_UNIT_SHARED			0x00000004
+#define ZFCP_STATUS_UNIT_READONLY		0x00000008
+
+/* FSF request status (this does not have a common part) */
+#define ZFCP_STATUS_FSFREQ_NOT_INIT		0x00000000
+#define ZFCP_STATUS_FSFREQ_POOL  		0x00000001
+#define ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT	0x00000002
+#define ZFCP_STATUS_FSFREQ_COMPLETED		0x00000004
+#define ZFCP_STATUS_FSFREQ_ERROR		0x00000008
+#define ZFCP_STATUS_FSFREQ_CLEANUP		0x00000010
+#define ZFCP_STATUS_FSFREQ_ABORTING		0x00000020
+#define ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED	0x00000040
+#define ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED       0x00000080
+#define ZFCP_STATUS_FSFREQ_ABORTED              0x00000100
+#define ZFCP_STATUS_FSFREQ_TMFUNCFAILED         0x00000200
+#define ZFCP_STATUS_FSFREQ_TMFUNCNOTSUPP        0x00000400
+#define ZFCP_STATUS_FSFREQ_RETRY                0x00000800
+#define ZFCP_STATUS_FSFREQ_DISMISSED            0x00001000
+
+/*********************** ERROR RECOVERY PROCEDURE DEFINES ********************/
+
+#define ZFCP_MAX_ERPS                   3
+
+#define ZFCP_ERP_FSFREQ_TIMEOUT		(30 * HZ)
+#define ZFCP_ERP_MEMWAIT_TIMEOUT	HZ
+
+#define ZFCP_STATUS_ERP_TIMEDOUT	0x10000000
+#define ZFCP_STATUS_ERP_CLOSE_ONLY	0x01000000
+#define ZFCP_STATUS_ERP_DISMISSING	0x00100000
+#define ZFCP_STATUS_ERP_DISMISSED	0x00200000
+#define ZFCP_STATUS_ERP_LOWMEM		0x00400000
+
+#define ZFCP_ERP_STEP_UNINITIALIZED	0x00000000
+#define ZFCP_ERP_STEP_FSF_XCONFIG	0x00000001
+#define ZFCP_ERP_STEP_PHYS_PORT_CLOSING	0x00000010
+#define ZFCP_ERP_STEP_PORT_CLOSING	0x00000100
+#define ZFCP_ERP_STEP_NAMESERVER_OPEN	0x00000200
+#define ZFCP_ERP_STEP_NAMESERVER_LOOKUP	0x00000400
+#define ZFCP_ERP_STEP_PORT_OPENING	0x00000800
+#define ZFCP_ERP_STEP_UNIT_CLOSING	0x00001000
+#define ZFCP_ERP_STEP_UNIT_OPENING	0x00002000
+
+/* Ordered by escalation level (necessary for proper erp-code operation) */
+#define ZFCP_ERP_ACTION_REOPEN_ADAPTER		0x4
+#define ZFCP_ERP_ACTION_REOPEN_PORT_FORCED	0x3
+#define ZFCP_ERP_ACTION_REOPEN_PORT		0x2
+#define ZFCP_ERP_ACTION_REOPEN_UNIT		0x1
+
+#define ZFCP_ERP_ACTION_RUNNING			0x1
+#define ZFCP_ERP_ACTION_READY			0x2
+
+#define ZFCP_ERP_SUCCEEDED	0x0
+#define ZFCP_ERP_FAILED		0x1
+#define ZFCP_ERP_CONTINUES	0x2
+#define ZFCP_ERP_EXIT		0x3
+#define ZFCP_ERP_DISMISSED	0x4
+#define ZFCP_ERP_NOMEM		0x5
+
+
+/******************** CFDC SPECIFIC STUFF *****************************/
+
+/* Firewall data channel sense data record */
+struct zfcp_cfdc_sense_data {
+	u32 signature;           /* Request signature */
+	u32 devno;               /* FCP adapter device number */
+	u32 command;             /* Command code */
+	u32 fsf_status;          /* FSF request status and status qualifier */
+	u8  fsf_status_qual[FSF_STATUS_QUALIFIER_SIZE];
+	u8  payloads[256];       /* Access conflicts list */
+	u8  control_file[0];     /* Access control table */
+};
+
+#define ZFCP_CFDC_SIGNATURE			0xCFDCACDF
+
+#define ZFCP_CFDC_CMND_DOWNLOAD_NORMAL		0x00010001
+#define ZFCP_CFDC_CMND_DOWNLOAD_FORCE		0x00010101
+#define ZFCP_CFDC_CMND_FULL_ACCESS		0x00000201
+#define ZFCP_CFDC_CMND_RESTRICTED_ACCESS	0x00000401
+#define ZFCP_CFDC_CMND_UPLOAD			0x00010002
+
+#define ZFCP_CFDC_DOWNLOAD			0x00000001
+#define ZFCP_CFDC_UPLOAD			0x00000002
+#define ZFCP_CFDC_WITH_CONTROL_FILE		0x00010000
+
+#define ZFCP_CFDC_DEV_NAME			"zfcp_cfdc"
+#define ZFCP_CFDC_DEV_MAJOR			MISC_MAJOR
+#define ZFCP_CFDC_DEV_MINOR			MISC_DYNAMIC_MINOR
+
+#define ZFCP_CFDC_MAX_CONTROL_FILE_SIZE		127 * 1024
+
+/************************* STRUCTURE DEFINITIONS *****************************/
+
+struct zfcp_fsf_req;
+
+/* holds various memory pools of an adapter */
+struct zfcp_adapter_mempool {
+	mempool_t *fsf_req_erp;
+	mempool_t *fsf_req_scsi;
+	mempool_t *fsf_req_abort;
+	mempool_t *fsf_req_status_read;
+	mempool_t *data_status_read;
+	mempool_t *data_gid_pn;
+};
+
+struct  zfcp_exchange_config_data{
+};
+
+struct zfcp_open_port {
+        struct zfcp_port *port;
+};
+
+struct zfcp_close_port {
+	struct zfcp_port *port;
+};
+
+struct zfcp_open_unit {
+	struct zfcp_unit *unit;
+};
+
+struct zfcp_close_unit {
+	struct zfcp_unit *unit;
+};
+
+struct zfcp_close_physical_port {
+        struct zfcp_port *port;
+};
+
+struct zfcp_send_fcp_command_task {
+	struct zfcp_fsf_req *fsf_req;
+	struct zfcp_unit *unit;
+ 	struct scsi_cmnd *scsi_cmnd;
+	unsigned long start_jiffies;
+};
+
+struct zfcp_send_fcp_command_task_management {
+	struct zfcp_unit *unit;
+};
+
+struct zfcp_abort_fcp_command {
+	struct zfcp_fsf_req *fsf_req;
+	struct zfcp_unit *unit;
+};
+
+/*
+ * header for CT_IU
+ */
+struct ct_hdr {
+	u8 revision;		// 0x01
+	u8 in_id[3];		// 0x00
+	u8 gs_type;		// 0xFC	Directory Service
+	u8 gs_subtype;		// 0x02	Name Server
+	u8 options;		// 0x00 single bidirectional exchange
+	u8 reserved0;
+	u16 cmd_rsp_code;	// 0x0121 GID_PN, or 0x0100 GA_NXT
+	u16 max_res_size;	// <= (4096 - 16) / 4
+	u8 reserved1;
+	u8 reason_code;
+	u8 reason_code_expl;
+	u8 vendor_unique;
+} __attribute__ ((packed));
+
+/* nameserver request CT_IU -- for requests where
+ * a port name is required */
+struct ct_iu_gid_pn_req {
+	struct ct_hdr header;
+	wwn_t wwpn;
+} __attribute__ ((packed));
+
+/* FS_ACC IU and data unit for GID_PN nameserver request */
+struct ct_iu_gid_pn_resp {
+	struct ct_hdr header;
+	fc_id_t d_id;
+} __attribute__ ((packed));
+
+typedef void (*zfcp_send_ct_handler_t)(unsigned long);
+
+/**
+ * struct zfcp_send_ct - used to pass parameters to function zfcp_fsf_send_ct
+ * @port: port where the request is sent to
+ * @req: scatter-gather list for request
+ * @resp: scatter-gather list for response
+ * @req_count: number of elements in request scatter-gather list
+ * @resp_count: number of elements in response scatter-gather list
+ * @handler: handler function (called for response to the request)
+ * @handler_data: data passed to handler function
+ * @pool: pointer to memory pool for ct request structure
+ * @timeout: FSF timeout for this request
+ * @timer: timer (e.g. for request initiated by erp)
+ * @completion: completion for synchronization purposes
+ * @status: used to pass error status to calling function
+ */
+struct zfcp_send_ct {
+	struct zfcp_port *port;
+	struct scatterlist *req;
+	struct scatterlist *resp;
+	unsigned int req_count;
+	unsigned int resp_count;
+	zfcp_send_ct_handler_t handler;
+	unsigned long handler_data;
+	mempool_t *pool;
+	int timeout;
+	struct timer_list *timer;
+	struct completion *completion;
+	int status;
+};
+
+/* used for name server requests in error recovery */
+struct zfcp_gid_pn_data {
+	struct zfcp_send_ct ct;
+	struct scatterlist req;
+	struct scatterlist resp;
+	struct ct_iu_gid_pn_req ct_iu_req;
+	struct ct_iu_gid_pn_resp ct_iu_resp;
+        struct zfcp_port *port;
+};
+
+typedef void (*zfcp_send_els_handler_t)(unsigned long);
+
+/**
+ * struct zfcp_send_els - used to pass parameters to function zfcp_fsf_send_els
+ * @adapter: adapter where request is sent from
+ * @d_id: destiniation id of port where request is sent to
+ * @req: scatter-gather list for request
+ * @resp: scatter-gather list for response
+ * @req_count: number of elements in request scatter-gather list
+ * @resp_count: number of elements in response scatter-gather list
+ * @handler: handler function (called for response to the request)
+ * @handler_data: data passed to handler function
+ * @timer: timer (e.g. for request initiated by erp)
+ * @completion: completion for synchronization purposes
+ * @ls_code: hex code of ELS command
+ * @status: used to pass error status to calling function
+ */
+struct zfcp_send_els {
+	struct zfcp_adapter *adapter;
+	fc_id_t d_id;
+	struct scatterlist *req;
+	struct scatterlist *resp;
+	unsigned int req_count;
+	unsigned int resp_count;
+	zfcp_send_els_handler_t handler;
+	unsigned long handler_data;
+	struct timer_list *timer;
+	struct completion *completion;
+	int ls_code;
+	int status;
+};
+
+struct zfcp_status_read {
+	struct fsf_status_read_buffer *buffer;
+};
+
+struct zfcp_fsf_done {
+	struct completion *complete;
+	int status;
+};
+
+/* request specific data */
+union zfcp_req_data {
+	struct zfcp_exchange_config_data exchange_config_data;
+	struct zfcp_open_port		  open_port;
+	struct zfcp_close_port		  close_port;
+	struct zfcp_open_unit		  open_unit;
+	struct zfcp_close_unit		  close_unit;
+	struct zfcp_close_physical_port	  close_physical_port;
+	struct zfcp_send_fcp_command_task send_fcp_command_task;
+        struct zfcp_send_fcp_command_task_management
+					  send_fcp_command_task_management;
+	struct zfcp_abort_fcp_command	  abort_fcp_command;
+	struct zfcp_send_ct *send_ct;
+	struct zfcp_send_els *send_els;
+	struct zfcp_status_read 	  status_read;
+	struct fsf_qtcb_bottom_port *port_data;
+};
+
+struct zfcp_qdio_queue {
+	struct qdio_buffer *buffer[QDIO_MAX_BUFFERS_PER_Q]; /* SBALs */
+	u8		   free_index;	      /* index of next free bfr
+						 in queue (free_count>0) */
+	atomic_t           free_count;	      /* number of free buffers
+						 in queue */
+	rwlock_t	   queue_lock;	      /* lock for operations on queue */
+        int                distance_from_int; /* SBALs used since PCI indication
+						 was last set */
+};
+
+struct zfcp_erp_action {
+	struct list_head list;
+	int action;	              /* requested action code */
+	struct zfcp_adapter *adapter; /* device which should be recovered */
+	struct zfcp_port *port;
+	struct zfcp_unit *unit;
+	volatile u32 status;	      /* recovery status */
+	u32 step;	              /* active step of this erp action */
+	struct zfcp_fsf_req *fsf_req; /* fsf request currently pending
+					 for this action */
+	struct timer_list timer;
+};
+
+
+struct zfcp_adapter {
+	struct list_head	list;              /* list of adapters */
+	atomic_t                refcount;          /* reference count */
+	wait_queue_head_t	remove_wq;         /* can be used to wait for
+						      refcount drop to zero */
+	wwn_t			wwnn;	           /* WWNN */
+	wwn_t			wwpn;	           /* WWPN */
+	fc_id_t			s_id;	           /* N_Port ID */
+	struct ccw_device       *ccw_device;	   /* S/390 ccw device */
+	u8			fc_service_class;
+	u32			fc_topology;	   /* FC topology */
+	u32			fc_link_speed;	   /* FC interface speed */
+	u32			hydra_version;	   /* Hydra version */
+	u32			fsf_lic_version;
+        u32			supported_features;/* of FCP channel */
+        u32			hardware_version;  /* of FCP channel */
+        u8			serial_number[32]; /* of hardware */
+	struct Scsi_Host	*scsi_host;	   /* Pointer to mid-layer */
+	unsigned short          scsi_host_no;      /* Assigned host number */
+	unsigned char		name[9];
+	struct list_head	port_list_head;	   /* remote port list */
+	struct list_head        port_remove_lh;    /* head of ports to be
+						      removed */
+	u32			ports;	           /* number of remote ports */
+        struct timer_list       scsi_er_timer;     /* SCSI err recovery watch */
+	struct list_head	fsf_req_list_head; /* head of FSF req list */
+	rwlock_t		fsf_req_list_lock; /* lock for ops on list of
+						      FSF requests */
+        atomic_t       		fsf_reqs_active;   /* # active FSF reqs */
+	struct zfcp_qdio_queue	request_queue;	   /* request queue */
+	u32			fsf_req_seq_no;	   /* FSF cmnd seq number */
+	wait_queue_head_t	request_wq;	   /* can be used to wait for
+						      more avaliable SBALs */
+	struct zfcp_qdio_queue	response_queue;	   /* response queue */
+	rwlock_t		abort_lock;        /* Protects against SCSI
+						      stack abort/command
+						      completion races */
+	u16			status_read_failed; /* # failed status reads */
+	atomic_t		status;	           /* status of this adapter */
+	struct list_head	erp_ready_head;	   /* error recovery for this
+						      adapter/devices */
+	struct list_head	erp_running_head;
+	rwlock_t		erp_lock;
+	struct semaphore	erp_ready_sem;
+	wait_queue_head_t	erp_thread_wqh;
+	wait_queue_head_t	erp_done_wqh;
+	struct zfcp_erp_action	erp_action;	   /* pending error recovery */
+        atomic_t                erp_counter;
+	u32			erp_total_count;   /* total nr of enqueued erp
+						      actions */
+	u32			erp_low_mem_count; /* nr of erp actions waiting
+						      for memory */
+	struct zfcp_port	*nameserver_port;  /* adapter's nameserver */
+        debug_info_t            *erp_dbf;          /* S/390 debug features */
+	debug_info_t            *abort_dbf;
+	debug_info_t            *in_els_dbf;
+	debug_info_t            *cmd_dbf;
+	spinlock_t              dbf_lock;
+	struct zfcp_adapter_mempool	pool;      /* Adapter memory pools */
+	struct qdio_initialize  qdio_init_data;    /* for qdio_establish */
+	struct device           generic_services;  /* directory for WKA ports */
+};
+
+/*
+ * the struct device sysfs_device must be at the beginning of this structure.
+ * pointer to struct device is used to free port structure in release function
+ * of the device. don't change!
+ */
+struct zfcp_port {
+	struct device          sysfs_device;   /* sysfs device */
+	struct list_head       list;	       /* list of remote ports */
+	atomic_t               refcount;       /* reference count */
+	wait_queue_head_t      remove_wq;      /* can be used to wait for
+						  refcount drop to zero */
+	struct zfcp_adapter    *adapter;       /* adapter used to access port */
+	struct list_head       unit_list_head; /* head of logical unit list */
+	struct list_head       unit_remove_lh; /* head of luns to be removed
+						  list */
+	u32		       units;	       /* # of logical units in list */
+	atomic_t	       status;	       /* status of this remote port */
+	scsi_id_t	       scsi_id;	       /* own SCSI ID */
+	wwn_t		       wwnn;	       /* WWNN if known */
+	wwn_t		       wwpn;	       /* WWPN */
+	fc_id_t		       d_id;	       /* D_ID */
+	u32		       handle;	       /* handle assigned by FSF */
+	struct zfcp_erp_action erp_action;     /* pending error recovery */
+        atomic_t               erp_counter;
+};
+
+/* the struct device sysfs_device must be at the beginning of this structure.
+ * pointer to struct device is used to free unit structure in release function
+ * of the device. don't change!
+ */
+struct zfcp_unit {
+	struct device          sysfs_device;   /* sysfs device */
+	struct list_head       list;	       /* list of logical units */
+	atomic_t               refcount;       /* reference count */
+	wait_queue_head_t      remove_wq;      /* can be used to wait for
+						  refcount drop to zero */
+	struct zfcp_port       *port;	       /* remote port of unit */
+	atomic_t	       status;	       /* status of this logical unit */
+	scsi_lun_t	       scsi_lun;       /* own SCSI LUN */
+	fcp_lun_t	       fcp_lun;	       /* own FCP_LUN */
+	u32		       handle;	       /* handle assigned by FSF */
+        struct scsi_device     *device;        /* scsi device struct pointer */
+	struct zfcp_erp_action erp_action;     /* pending error recovery */
+        atomic_t               erp_counter;
+};
+
+/* FSF request */
+struct zfcp_fsf_req {
+	struct list_head       list;	       /* list of FSF requests */
+	struct zfcp_adapter    *adapter;       /* adapter request belongs to */
+	u8		       sbal_number;    /* nr of SBALs free for use */
+	u8		       sbal_first;     /* first SBAL for this request */
+	u8		       sbal_last;      /* last possible SBAL for
+						  this reuest */
+	u8		       sbal_curr;      /* current SBAL during creation
+						  of request */
+	u8		       sbale_curr;     /* current SBALE during creation
+						  of request */
+	wait_queue_head_t      completion_wq;  /* can be used by a routine
+						  to wait for completion */
+	volatile u32	       status;	       /* status of this request */
+	u32		       fsf_command;    /* FSF Command copy */
+	struct fsf_qtcb	       *qtcb;	       /* address of associated QTCB */
+	u32		       seq_no;         /* Sequence number of request */
+        union zfcp_req_data    data;           /* Info fields of request */ 
+	struct zfcp_erp_action *erp_action;    /* used if this request is
+						  issued on behalf of erp */
+	mempool_t	       *pool;	       /* used if request was alloacted
+						  from emergency pool */
+};
+
+typedef void zfcp_fsf_req_handler_t(struct zfcp_fsf_req*);
+
+/* driver data */
+struct zfcp_data {
+	struct scsi_host_template scsi_host_template;
+        atomic_t                status;             /* Module status flags */
+	struct list_head	adapter_list_head;  /* head of adapter list */
+	struct list_head	adapter_remove_lh;  /* head of adapters to be
+						       removed */
+        rwlock_t                status_read_lock;   /* for status read thread */
+        struct list_head        status_read_receive_head;
+        struct list_head        status_read_send_head;
+        struct semaphore        status_read_sema;
+	wait_queue_head_t	status_read_thread_wqh;
+	u32			adapters;	    /* # of adapters in list */
+	rwlock_t                config_lock;        /* serialises changes
+						       to adapter/port/unit
+						       lists */
+	struct semaphore        config_sema;        /* serialises configuration
+						       changes */
+	atomic_t		loglevel;            /* current loglevel */
+	char                    init_busid[BUS_ID_SIZE];
+	wwn_t                   init_wwpn;
+	fcp_lun_t               init_fcp_lun;
+	char 			*driver_version;
+};
+
+/**
+ * struct zfcp_sg_list - struct describing a scatter-gather list
+ * @sg: pointer to array of (struct scatterlist)
+ * @count: number of elements in scatter-gather list
+ */
+struct zfcp_sg_list {
+	struct scatterlist *sg;
+	unsigned int count;
+};
+
+/* number of elements for various memory pools */
+#define ZFCP_POOL_FSF_REQ_ERP_NR	1
+#define ZFCP_POOL_FSF_REQ_SCSI_NR	1
+#define ZFCP_POOL_FSF_REQ_ABORT_NR	1
+#define ZFCP_POOL_STATUS_READ_NR	ZFCP_STATUS_READS_RECOM
+#define ZFCP_POOL_DATA_GID_PN_NR	1
+
+/* struct used by memory pools for fsf_requests */
+struct zfcp_fsf_req_pool_element {
+	struct zfcp_fsf_req fsf_req;
+	struct fsf_qtcb qtcb;
+};
+
+/********************** ZFCP SPECIFIC DEFINES ********************************/
+
+#define ZFCP_FSFREQ_CLEANUP_TIMEOUT	HZ/10
+
+#define ZFCP_KNOWN              0x00000001
+#define ZFCP_REQ_AUTO_CLEANUP	0x00000002
+#define ZFCP_WAIT_FOR_SBAL	0x00000004
+#define ZFCP_REQ_NO_QTCB	0x00000008
+
+#define ZFCP_SET                0x00000100
+#define ZFCP_CLEAR              0x00000200
+
+#define ZFCP_INTERRUPTIBLE	1
+#define ZFCP_UNINTERRUPTIBLE	0
+
+#ifndef atomic_test_mask
+#define atomic_test_mask(mask, target) \
+           ((atomic_read(target) & mask) == mask)
+#endif
+
+extern void _zfcp_hex_dump(char *, int);
+#define ZFCP_HEX_DUMP(level, addr, count) \
+		if (ZFCP_LOG_CHECK(level)) { \
+			_zfcp_hex_dump(addr, count); \
+		}
+
+#define zfcp_get_busid_by_adapter(adapter) (adapter->ccw_device->dev.bus_id)
+#define zfcp_get_busid_by_port(port) (zfcp_get_busid_by_adapter(port->adapter))
+#define zfcp_get_busid_by_unit(unit) (zfcp_get_busid_by_port(unit->port))
+
+/*
+ *  functions needed for reference/usage counting
+ */
+
+static inline void
+zfcp_unit_get(struct zfcp_unit *unit)
+{
+	atomic_inc(&unit->refcount);
+}
+
+static inline void
+zfcp_unit_put(struct zfcp_unit *unit)
+{
+	if (atomic_dec_return(&unit->refcount) == 0)
+		wake_up(&unit->remove_wq);
+}
+
+static inline void
+zfcp_unit_wait(struct zfcp_unit *unit)
+{
+	wait_event(unit->remove_wq, atomic_read(&unit->refcount) == 0);
+}
+
+static inline void
+zfcp_port_get(struct zfcp_port *port)
+{
+	atomic_inc(&port->refcount);
+}
+
+static inline void
+zfcp_port_put(struct zfcp_port *port)
+{
+	if (atomic_dec_return(&port->refcount) == 0)
+		wake_up(&port->remove_wq);
+}
+
+static inline void
+zfcp_port_wait(struct zfcp_port *port)
+{
+	wait_event(port->remove_wq, atomic_read(&port->refcount) == 0);
+}
+
+static inline void
+zfcp_adapter_get(struct zfcp_adapter *adapter)
+{
+	atomic_inc(&adapter->refcount);
+}
+
+static inline void
+zfcp_adapter_put(struct zfcp_adapter *adapter)
+{
+	if (atomic_dec_return(&adapter->refcount) == 0)
+		wake_up(&adapter->remove_wq);
+}
+
+static inline void
+zfcp_adapter_wait(struct zfcp_adapter *adapter)
+{
+	wait_event(adapter->remove_wq, atomic_read(&adapter->refcount) == 0);
+}
+
+#endif /* ZFCP_DEF_H */