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 */