Merge branch 'linus'

Conflicts:

	drivers/scsi/ipr.c

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 0 insertions, 2540 deletions

diff --git a/drivers/s390/net/iucv.c b/drivers/s390/net/iucv.c
deleted file mode 100644
index 229aeb5fc39..00000000000
--- a/drivers/s390/net/iucv.c
+++ /dev/null
@@ -1,2540 +0,0 @@
-/*
- * IUCV network driver
- *
- * Copyright (C) 2001 IBM Deutschland Entwicklung GmbH, IBM Corporation
- * Author(s):
- *    Original source:
- *      Alan Altmark (Alan_Altmark@us.ibm.com)  Sept. 2000
- *      Xenia Tkatschow (xenia@us.ibm.com)
- *    2Gb awareness and general cleanup:
- *      Fritz Elfert (elfert@de.ibm.com, felfert@millenux.com)
- *
- * Documentation used:
- *    The original source
- *    CP Programming Service, IBM document # SC24-5760
- *
- * 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.
- *
- */
-
-/* #define DEBUG */
-
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-
-#include <linux/spinlock.h>
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/list.h>
-#include <linux/errno.h>
-#include <linux/err.h>
-#include <linux/device.h>
-#include <asm/atomic.h>
-#include "iucv.h"
-#include <asm/io.h>
-#include <asm/s390_ext.h>
-#include <asm/ebcdic.h>
-#include <asm/smp.h>
-#include <asm/s390_rdev.h>
-
-/* FLAGS:
- * All flags are defined in the field IPFLAGS1 of each function
- * and can be found in CP Programming Services.
- * IPSRCCLS - Indicates you have specified a source class
- * IPFGMCL  - Indicates you have specified a target class
- * IPFGPID  - Indicates you have specified a pathid
- * IPFGMID  - Indicates you have specified a message ID
- * IPANSLST - Indicates that you are using an address list for
- *            reply data
- * IPBUFLST - Indicates that you are using an address list for
- *            message data
- */
-
-#define IPSRCCLS 	0x01
-#define IPFGMCL         0x01
-#define IPFGPID         0x02
-#define IPFGMID         0x04
-#define IPANSLST        0x08
-#define IPBUFLST        0x40
-
-static int
-iucv_bus_match (struct device *dev, struct device_driver *drv)
-{
-	return 0;
-}
-
-struct bus_type iucv_bus = {
-	.name = "iucv",
-	.match = iucv_bus_match,
-};
-
-struct device *iucv_root;
-
-/* General IUCV interrupt structure */
-typedef struct {
-	__u16 ippathid;
-	__u8  res1;
-	__u8  iptype;
-	__u32 res2;
-	__u8  ipvmid[8];
-	__u8  res3[24];
-} iucv_GeneralInterrupt;
-
-static iucv_GeneralInterrupt *iucv_external_int_buffer = NULL;
-
-/* Spin Lock declaration */
-
-static DEFINE_SPINLOCK(iucv_lock);
-
-static int messagesDisabled = 0;
-
-/***************INTERRUPT HANDLING ***************/
-
-typedef struct {
-	struct list_head queue;
-	iucv_GeneralInterrupt data;
-} iucv_irqdata;
-
-static struct list_head  iucv_irq_queue;
-static DEFINE_SPINLOCK(iucv_irq_queue_lock);
-
-/*
- *Internal function prototypes
- */
-static void iucv_tasklet_handler(unsigned long);
-static void iucv_irq_handler(__u16);
-
-static DECLARE_TASKLET(iucv_tasklet,iucv_tasklet_handler,0);
-
-/************ FUNCTION ID'S ****************************/
-
-#define ACCEPT          10
-#define CONNECT         11
-#define DECLARE_BUFFER  12
-#define PURGE           9
-#define QUERY           0
-#define QUIESCE         13
-#define RECEIVE         5
-#define REJECT          8
-#define REPLY           6
-#define RESUME          14
-#define RETRIEVE_BUFFER 2
-#define SEND            4
-#define SETMASK         16
-#define SEVER           15
-
-/**
- * Structure: handler
- * members: list - list management.
- *          structure: id
- *             userid - 8 char array of machine identification
- *             user_data - 16 char array for user identification
- *             mask - 24 char array used to compare the 2 previous
- *          interrupt_table - vector of interrupt functions.
- *          pgm_data -  ulong, application data that is passed
- *                      to the interrupt handlers
-*/
-typedef struct handler_t {
-	struct list_head list;
-	struct {
-		__u8 userid[8];
-		__u8 user_data[16];
-		__u8 mask[24];
-	}                    id;
-	iucv_interrupt_ops_t *interrupt_table;
-	void                 *pgm_data;
-} handler;
-
-/**
- * iucv_handler_table: List of registered handlers.
- */
-static struct list_head iucv_handler_table;
-
-/**
- * iucv_pathid_table: an array of *handler pointing into
- *                    iucv_handler_table for fast indexing by pathid;
- */
-static handler **iucv_pathid_table;
-
-static unsigned long max_connections;
-
-/**
- * iucv_cpuid: contains the logical cpu number of the cpu which
- * has declared the iucv buffer by issuing DECLARE_BUFFER.
- * If no cpu has done the initialization iucv_cpuid contains -1.
- */
-static int iucv_cpuid = -1;
-/**
- * register_flag: is 0 when external interrupt has not been registered
- */
-static int register_flag;
-
-/****************FIVE 40-BYTE PARAMETER STRUCTURES******************/
-/* Data struct 1: iparml_control
- * Used for iucv_accept
- *          iucv_connect
- *          iucv_quiesce
- *          iucv_resume
- *          iucv_sever
- *          iucv_retrieve_buffer
- * Data struct 2: iparml_dpl     (data in parameter list)
- * Used for iucv_send_prmmsg
- *          iucv_send2way_prmmsg
- *          iucv_send2way_prmmsg_array
- *          iucv_reply_prmmsg
- * Data struct 3: iparml_db       (data in a buffer)
- * Used for iucv_receive
- *          iucv_receive_array
- *          iucv_reject
- *          iucv_reply
- *          iucv_reply_array
- *          iucv_send
- *          iucv_send_array
- *          iucv_send2way
- *          iucv_send2way_array
- *          iucv_declare_buffer
- * Data struct 4: iparml_purge
- * Used for iucv_purge
- *          iucv_query
- * Data struct 5: iparml_set_mask
- * Used for iucv_set_mask
- */
-
-typedef struct {
-	__u16 ippathid;
-	__u8  ipflags1;
-	__u8  iprcode;
-	__u16 ipmsglim;
-	__u16 res1;
-	__u8  ipvmid[8];
-	__u8  ipuser[16];
-	__u8  iptarget[8];
-} iparml_control;
-
-typedef struct {
-	__u16 ippathid;
-	__u8  ipflags1;
-	__u8  iprcode;
-	__u32 ipmsgid;
-	__u32 iptrgcls;
-	__u8  iprmmsg[8];
-	__u32 ipsrccls;
-	__u32 ipmsgtag;
-	__u32 ipbfadr2;
-	__u32 ipbfln2f;
-	__u32 res;
-} iparml_dpl;
-
-typedef struct {
-	__u16 ippathid;
-	__u8  ipflags1;
-	__u8  iprcode;
-	__u32 ipmsgid;
-	__u32 iptrgcls;
-	__u32 ipbfadr1;
-	__u32 ipbfln1f;
-	__u32 ipsrccls;
-	__u32 ipmsgtag;
-	__u32 ipbfadr2;
-	__u32 ipbfln2f;
-	__u32 res;
-} iparml_db;
-
-typedef struct {
-	__u16 ippathid;
-	__u8  ipflags1;
-	__u8  iprcode;
-	__u32 ipmsgid;
-	__u8  ipaudit[3];
-	__u8  res1[5];
-	__u32 res2;
-	__u32 ipsrccls;
-	__u32 ipmsgtag;
-	__u32 res3[3];
-} iparml_purge;
-
-typedef struct {
-	__u8  ipmask;
-	__u8  res1[2];
-	__u8  iprcode;
-	__u32 res2[9];
-} iparml_set_mask;
-
-typedef struct {
-	union {
-		iparml_control  p_ctrl;
-		iparml_dpl      p_dpl;
-		iparml_db       p_db;
-		iparml_purge    p_purge;
-		iparml_set_mask p_set_mask;
-	} param;
-	atomic_t in_use;
-	__u32    res;
-}  __attribute__ ((aligned(8))) iucv_param;
-#define PARAM_POOL_SIZE (PAGE_SIZE / sizeof(iucv_param))
-
-static iucv_param * iucv_param_pool;
-
-MODULE_AUTHOR("(C) 2001 IBM Corp. by Fritz Elfert (felfert@millenux.com)");
-MODULE_DESCRIPTION("Linux for S/390 IUCV lowlevel driver");
-MODULE_LICENSE("GPL");
-
-/*
- * Debugging stuff
- *******************************************************************************/
-
-
-#ifdef DEBUG
-static int debuglevel = 0;
-
-module_param(debuglevel, int, 0);
-MODULE_PARM_DESC(debuglevel,
- "Specifies the debug level (0=off ... 3=all)");
-
-static void
-iucv_dumpit(char *title, void *buf, int len)
-{
-	int i;
-	__u8 *p = (__u8 *)buf;
-
-	if (debuglevel < 3)
-		return;
-
-	printk(KERN_DEBUG "%s\n", title);
-	printk("  ");
-	for (i = 0; i < len; i++) {
-		if (!(i % 16) && i != 0)
-			printk ("\n  ");
-		else if (!(i % 4) && i != 0)
-			printk(" ");
-		printk("%02X", *p++);
-	}
-	if (len % 16)
-		printk ("\n");
-	return;
-}
-#define iucv_debug(lvl, fmt, args...) \
-do { \
-	if (debuglevel >= lvl) \
-		printk(KERN_DEBUG "%s: " fmt "\n", __FUNCTION__ , ## args); \
-} while (0)
-
-#else
-
-#define iucv_debug(lvl, fmt, args...)	do { } while (0)
-#define iucv_dumpit(title, buf, len)	do { } while (0)
-
-#endif
-
-/*
- * Internal functions
- *******************************************************************************/
-
-/**
- * print start banner
- */
-static void
-iucv_banner(void)
-{
-	printk(KERN_INFO "IUCV lowlevel driver initialized\n");
-}
-
-/**
- * iucv_init - Initialization
- *
- * Allocates and initializes various data structures.
- */
-static int
-iucv_init(void)
-{
-	int ret;
-
-	if (iucv_external_int_buffer)
-		return 0;
-
-	if (!MACHINE_IS_VM) {
-		printk(KERN_ERR "IUCV: IUCV connection needs VM as base\n");
-		return -EPROTONOSUPPORT;
-	}
-
-	ret = bus_register(&iucv_bus);
-	if (ret) {
-		printk(KERN_ERR "IUCV: failed to register bus.\n");
-		return ret;
-	}
-
-	iucv_root = s390_root_dev_register("iucv");
-	if (IS_ERR(iucv_root)) {
-		printk(KERN_ERR "IUCV: failed to register iucv root.\n");
-		bus_unregister(&iucv_bus);
-		return PTR_ERR(iucv_root);
-	}
-
-	/* Note: GFP_DMA used used to get memory below 2G */
-	iucv_external_int_buffer = kzalloc(sizeof(iucv_GeneralInterrupt),
-					   GFP_KERNEL|GFP_DMA);
-	if (!iucv_external_int_buffer) {
-		printk(KERN_WARNING
-		       "%s: Could not allocate external interrupt buffer\n",
-		       __FUNCTION__);
-		s390_root_dev_unregister(iucv_root);
-		bus_unregister(&iucv_bus);
-		return -ENOMEM;
-	}
-
-	/* Initialize parameter pool */
-	iucv_param_pool = kzalloc(sizeof(iucv_param) * PARAM_POOL_SIZE,
-				  GFP_KERNEL|GFP_DMA);
-	if (!iucv_param_pool) {
-		printk(KERN_WARNING "%s: Could not allocate param pool\n",
-		       __FUNCTION__);
-		kfree(iucv_external_int_buffer);
-		iucv_external_int_buffer = NULL;
-		s390_root_dev_unregister(iucv_root);
-		bus_unregister(&iucv_bus);
-		return -ENOMEM;
-	}
-
-	/* Initialize irq queue */
-	INIT_LIST_HEAD(&iucv_irq_queue);
-
-	/* Initialize handler table */
-	INIT_LIST_HEAD(&iucv_handler_table);
-
-	iucv_banner();
-	return 0;
-}
-
-/**
- * iucv_exit - De-Initialization
- *
- * Frees everything allocated from iucv_init.
- */
-static int iucv_retrieve_buffer (void);
-
-static void
-iucv_exit(void)
-{
-	iucv_retrieve_buffer();
-	kfree(iucv_external_int_buffer);
-	iucv_external_int_buffer = NULL;
-	kfree(iucv_param_pool);
-	iucv_param_pool = NULL;
-	s390_root_dev_unregister(iucv_root);
-	bus_unregister(&iucv_bus);
-	printk(KERN_INFO "IUCV lowlevel driver unloaded\n");
-}
-
-/**
- * grab_param: - Get a parameter buffer from the pre-allocated pool.
- *
- * This function searches for an unused element in the pre-allocated pool
- * of parameter buffers. If one is found, it marks it "in use" and returns
- * a pointer to it. The calling function is responsible for releasing it
- * when it has finished its usage.
- *
- * Returns: A pointer to iucv_param.
- */
-static __inline__ iucv_param *
-grab_param(void)
-{
-	iucv_param *ptr;
-        static int hint = 0;
-
-	ptr = iucv_param_pool + hint;
-	do {
-		ptr++;
-		if (ptr >= iucv_param_pool + PARAM_POOL_SIZE)
-			ptr = iucv_param_pool;
-	} while (atomic_cmpxchg(&ptr->in_use, 0, 1) != 0);
-	hint = ptr - iucv_param_pool;
-
-	memset(&ptr->param, 0, sizeof(ptr->param));
-	return ptr;
-}
-
-/**
- * release_param - Release a parameter buffer.
- * @p: A pointer to a struct iucv_param, previously obtained by calling
- *     grab_param().
- *
- * This function marks the specified parameter buffer "unused".
- */
-static __inline__ void
-release_param(void *p)
-{
-	atomic_set(&((iucv_param *)p)->in_use, 0);
-}
-
-/**
- * iucv_add_handler: - Add a new handler
- * @new_handler: handle that is being entered into chain.
- *
- * Places new handle on iucv_handler_table, if identical handler is not
- * found.
- *
- * Returns: 0 on success, !0 on failure (handler already in chain).
- */
-static int
-iucv_add_handler (handler *new)
-{
-	ulong flags;
-
-	iucv_debug(1, "entering");
-	iucv_dumpit("handler:", new, sizeof(handler));
-
-	spin_lock_irqsave (&iucv_lock, flags);
-	if (!list_empty(&iucv_handler_table)) {
-		struct list_head *lh;
-
-		/**
-		 * Search list for handler with identical id. If one
-		 * is found, the new handler is _not_ added.
-		 */
-		list_for_each(lh, &iucv_handler_table) {
-			handler *h = list_entry(lh, handler, list);
-			if (!memcmp(&new->id, &h->id, sizeof(h->id))) {
-				iucv_debug(1, "ret 1");
-				spin_unlock_irqrestore (&iucv_lock, flags);
-				return 1;
-			}
-		}
-	}
-	/**
-	 * If we get here, no handler was found.
-	 */
-	INIT_LIST_HEAD(&new->list);
-	list_add(&new->list, &iucv_handler_table);
-	spin_unlock_irqrestore (&iucv_lock, flags);
-
-	iucv_debug(1, "exiting");
-	return 0;
-}
-
-/**
- * b2f0:
- * @code: identifier of IUCV call to CP.
- * @parm: pointer to 40 byte iparml area passed to CP
- *
- * Calls CP to execute IUCV commands.
- *
- * Returns: return code from CP's IUCV call
- */
-static inline ulong b2f0(__u32 code, void *parm)
-{
-	register unsigned long reg0 asm ("0");
-	register unsigned long reg1 asm ("1");
-	iucv_dumpit("iparml before b2f0 call:", parm, sizeof(iucv_param));
-
-	reg0 = code;
-	reg1 = virt_to_phys(parm);
-	asm volatile(".long 0xb2f01000" : : "d" (reg0), "a" (reg1));
-
-	iucv_dumpit("iparml after b2f0 call:", parm, sizeof(iucv_param));
-
-	return (unsigned long)*((__u8 *)(parm + 3));
-}
-
-/*
- * Name: iucv_add_pathid
- * Purpose: Adds a path id to the system.
- * Input: pathid -  pathid that is going to be entered into system
- *        handle -  address of handler that the pathid will be associated
- *		   with.
- *        pgm_data - token passed in by application.
- * Output: 0: successful addition of pathid
- *	   - EINVAL - pathid entry is being used by another application
- *	   - ENOMEM - storage allocation for a new pathid table failed
-*/
-static int
-__iucv_add_pathid(__u16 pathid, handler *handler)
-{
-
-	iucv_debug(1, "entering");
-
-	iucv_debug(1, "handler is pointing to %p", handler);
-
-	if (pathid > (max_connections - 1))
-		return -EINVAL;
-
-	if (iucv_pathid_table[pathid]) {
-		iucv_debug(1, "pathid entry is %p", iucv_pathid_table[pathid]);
-		printk(KERN_WARNING
-		       "%s: Pathid being used, error.\n", __FUNCTION__);
-		return -EINVAL;
-	}
-	iucv_pathid_table[pathid] = handler;
-
-	iucv_debug(1, "exiting");
-	return 0;
-}				/* end of add_pathid function */
-
-static int
-iucv_add_pathid(__u16 pathid, handler *handler)
-{
-	ulong flags;
-	int rc;
-
-	spin_lock_irqsave (&iucv_lock, flags);
-	rc = __iucv_add_pathid(pathid, handler);
-	spin_unlock_irqrestore (&iucv_lock, flags);
-	return rc;
-}
-
-static void
-iucv_remove_pathid(__u16 pathid)
-{
-	ulong flags;
-
-	if (pathid > (max_connections - 1))
-		return;
-
-	spin_lock_irqsave (&iucv_lock, flags);
-	iucv_pathid_table[pathid] = NULL;
-	spin_unlock_irqrestore (&iucv_lock, flags);
-}
-
-/**
- * iucv_declare_buffer_cpuid
- * Register at VM for subsequent IUCV operations. This is executed
- * on the reserved CPU iucv_cpuid. Called from iucv_declare_buffer().
- */
-static void
-iucv_declare_buffer_cpuid (void *result)
-{
-	iparml_db *parm;
-
-	parm = (iparml_db *)grab_param();
-	parm->ipbfadr1 = virt_to_phys(iucv_external_int_buffer);
-	if ((*((ulong *)result) = b2f0(DECLARE_BUFFER, parm)) == 1)
-		*((ulong *)result) = parm->iprcode;
-	release_param(parm);
-}
-
-/**
- * iucv_retrieve_buffer_cpuid:
- * Unregister IUCV usage at VM. This is always executed on the same
- * cpu that registered the buffer to VM.
- * Called from iucv_retrieve_buffer().
- */
-static void
-iucv_retrieve_buffer_cpuid (void *cpu)
-{
-	iparml_control *parm;
-
-	parm = (iparml_control *)grab_param();
-	b2f0(RETRIEVE_BUFFER, parm);
-	release_param(parm);
-}
-
-/**
- * Name: iucv_declare_buffer
- * Purpose: Specifies the guests real address of an external
- *          interrupt.
- * Input: void
- * Output: iprcode - return code from b2f0 call
- */
-static int
-iucv_declare_buffer (void)
-{
-	unsigned long flags;
-	ulong b2f0_result;
-
-	iucv_debug(1, "entering");
-	b2f0_result = -ENODEV;
-	spin_lock_irqsave (&iucv_lock, flags);
-	if (iucv_cpuid == -1) {
-		/* Reserve any cpu for use by iucv. */
-		iucv_cpuid = smp_get_cpu(CPU_MASK_ALL);
-		spin_unlock_irqrestore (&iucv_lock, flags);
-		smp_call_function_on(iucv_declare_buffer_cpuid,
-			&b2f0_result, 0, 1, iucv_cpuid);
-		if (b2f0_result) {
-			smp_put_cpu(iucv_cpuid);
-			iucv_cpuid = -1;
-		}
-		iucv_debug(1, "Address of EIB = %p", iucv_external_int_buffer);
-	} else {
-		spin_unlock_irqrestore (&iucv_lock, flags);
-		b2f0_result = 0;
-	}
-	iucv_debug(1, "exiting");
-	return b2f0_result;
-}
-
-/**
- * iucv_retrieve_buffer:
- *
- * Terminates all use of IUCV.
- * Returns: return code from CP
- */
-static int
-iucv_retrieve_buffer (void)
-{
-	iucv_debug(1, "entering");
-	if (iucv_cpuid != -1) {
-		smp_call_function_on(iucv_retrieve_buffer_cpuid,
-				     NULL, 0, 1, iucv_cpuid);
-		/* Release the cpu reserved by iucv_declare_buffer. */
-		smp_put_cpu(iucv_cpuid);
-		iucv_cpuid = -1;
-	}
-	iucv_debug(1, "exiting");
-	return 0;
-}
-
-/**
- * iucv_remove_handler:
- * @users_handler: handler to be removed
- *
- * Remove handler when application unregisters.
- */
-static void
-iucv_remove_handler(handler *handler)
-{
-	unsigned long flags;
-
-	if ((!iucv_pathid_table) || (!handler))
-		return;
-
-	iucv_debug(1, "entering");
-
-	spin_lock_irqsave (&iucv_lock, flags);
-	list_del(&handler->list);
-	if (list_empty(&iucv_handler_table)) {
-		if (register_flag) {
-			unregister_external_interrupt(0x4000, iucv_irq_handler);
-			register_flag = 0;
-		}
-	}
-	spin_unlock_irqrestore (&iucv_lock, flags);
-
-	iucv_debug(1, "exiting");
-	return;
-}
-
-/**
- * iucv_register_program:
- * @pgmname:  user identification
- * @userid:   machine identification
- * @pgmmask:  Indicates which bits in the pgmname and userid combined will be
- *            used to determine who is given control.
- * @ops:      Address of interrupt handler table.
- * @pgm_data: Application data to be passed to interrupt handlers.
- *
- * Registers an application with IUCV.
- * Returns:
- *           The address of handler, or NULL on failure.
- * NOTE on pgmmask:
- *   If pgmname, userid and pgmmask are provided, pgmmask is entered into the
- *   handler as is.
- *   If pgmmask is NULL, the internal mask is set to all 0xff's
- *   When userid is NULL, the first 8 bytes of the internal mask are forced
- *   to 0x00.
- *   If pgmmask and userid are NULL, the first 8 bytes of the internal mask
- *   are forced to 0x00 and the last 16 bytes to 0xff.
- */
-
-iucv_handle_t
-iucv_register_program (__u8 pgmname[16],
-		       __u8 userid[8],
-		       __u8 pgmmask[24],
-		       iucv_interrupt_ops_t * ops, void *pgm_data)
-{
-	ulong rc = 0;		/* return code from function calls */
-	handler *new_handler;
-
-	iucv_debug(1, "entering");
-
-	if (ops == NULL) {
-		/* interrupt table is not defined */
-		printk(KERN_WARNING "%s: Interrupt table is not defined, "
-		       "exiting\n", __FUNCTION__);
-		return NULL;
-	}
-	if (!pgmname) {
-		printk(KERN_WARNING "%s: pgmname not provided\n", __FUNCTION__);
-		return NULL;
-	}
-
-	/* Allocate handler entry */
-	new_handler = kmalloc(sizeof(handler), GFP_ATOMIC);
-	if (new_handler == NULL) {
-		printk(KERN_WARNING "%s: storage allocation for new handler "
-		       "failed.\n", __FUNCTION__);
-		return NULL;
-	}
-
-	if (!iucv_pathid_table) {
-		if (iucv_init()) {
-			kfree(new_handler);
-			return NULL;
-		}
-
-		max_connections = iucv_query_maxconn();
-		iucv_pathid_table = kcalloc(max_connections, sizeof(handler *),
-					GFP_ATOMIC);
-		if (iucv_pathid_table == NULL) {
-			printk(KERN_WARNING "%s: iucv_pathid_table storage "
-			       "allocation failed\n", __FUNCTION__);
-			kfree(new_handler);
-			return NULL;
-		}
-	}
-	memset(new_handler, 0, sizeof (handler));
-	memcpy(new_handler->id.user_data, pgmname,
-		sizeof (new_handler->id.user_data));
-	if (userid) {
-		memcpy (new_handler->id.userid, userid,
-			sizeof (new_handler->id.userid));
-		ASCEBC (new_handler->id.userid,
-			sizeof (new_handler->id.userid));
-		EBC_TOUPPER (new_handler->id.userid,
-			     sizeof (new_handler->id.userid));
-
-		if (pgmmask) {
-			memcpy (new_handler->id.mask, pgmmask,
-				sizeof (new_handler->id.mask));
-		} else {
-			memset (new_handler->id.mask, 0xFF,
-				sizeof (new_handler->id.mask));
-		}
-	} else {
-		if (pgmmask) {
-			memcpy (new_handler->id.mask, pgmmask,
-				sizeof (new_handler->id.mask));
-		} else {
-			memset (new_handler->id.mask, 0xFF,
-				sizeof (new_handler->id.mask));
-		}
-		memset (new_handler->id.userid, 0x00,
-			sizeof (new_handler->id.userid));
-	}
-	/* fill in the rest of handler */
-	new_handler->pgm_data = pgm_data;
-	new_handler->interrupt_table = ops;
-
-	/*
-	 * Check if someone else is registered with same pgmname, userid
-	 * and mask. If someone is already registered with same pgmname,
-	 * userid and mask, registration will fail and NULL will be returned
-	 * to the application.
-	 * If identical handler not found, then handler is added to list.
-	 */
-	rc = iucv_add_handler(new_handler);
-	if (rc) {
-		printk(KERN_WARNING "%s: Someone already registered with same "
-		       "pgmname, userid, pgmmask\n", __FUNCTION__);
-		kfree (new_handler);
-		return NULL;
-	}
-
-	rc = iucv_declare_buffer();
-	if (rc) {
-		char *err = "Unknown";
-		iucv_remove_handler(new_handler);
-		kfree(new_handler);
-		switch(rc) {
-		case 0x03:
-			err = "Directory error";
-			break;
-		case 0x0a:
-			err = "Invalid length";
-			break;
-		case 0x13:
-			err = "Buffer already exists";
-			break;
-		case 0x3e:
-			err = "Buffer overlap";
-			break;
-		case 0x5c:
-			err = "Paging or storage error";
-			break;
-		}
-		printk(KERN_WARNING "%s: iucv_declare_buffer "
-		       "returned error 0x%02lx (%s)\n", __FUNCTION__, rc, err);
-		return NULL;
-	}
-	if (!register_flag) {
-		/* request the 0x4000 external interrupt */
-		rc = register_external_interrupt (0x4000, iucv_irq_handler);
-		if (rc) {
-			iucv_remove_handler(new_handler);
-			kfree (new_handler);
-			printk(KERN_WARNING "%s: "
-			       "register_external_interrupt returned %ld\n",
-			       __FUNCTION__, rc);
-			return NULL;
-
-		}
-		register_flag = 1;
-	}
-	iucv_debug(1, "exiting");
-	return new_handler;
-}				/* end of register function */
-
-/**
- * iucv_unregister_program:
- * @handle: address of handler
- *
- * Unregister application with IUCV.
- * Returns:
- *   0 on success, -EINVAL, if specified handle is invalid.
- */
-
-int
-iucv_unregister_program (iucv_handle_t handle)
-{
-	handler *h = NULL;
-	struct list_head *lh;
-	int i;
-	ulong flags;
-
-	iucv_debug(1, "entering");
-	iucv_debug(1, "address of handler is %p", h);
-
-	/* Checking if handle is valid  */
-	spin_lock_irqsave (&iucv_lock, flags);
-	list_for_each(lh, &iucv_handler_table) {
-		if ((handler *)handle == list_entry(lh, handler, list)) {
-			h = (handler *)handle;
-			break;
-		}
-	}
-	if (!h) {
-		spin_unlock_irqrestore (&iucv_lock, flags);
-		if (handle)
-			printk(KERN_WARNING
-			       "%s: Handler not found in iucv_handler_table.\n",
-			       __FUNCTION__);
-		else
-			printk(KERN_WARNING
-			       "%s: NULL handle passed by application.\n",
-			       __FUNCTION__);
-		return -EINVAL;
-	}
-
-	/**
-	 * First, walk thru iucv_pathid_table and sever any pathid which is
-	 * still pointing to the handler to be removed.
-	 */
-	for (i = 0; i < max_connections; i++)
-		if (iucv_pathid_table[i] == h) {
-			spin_unlock_irqrestore (&iucv_lock, flags);
-			iucv_sever(i, h->id.user_data);
-			spin_lock_irqsave(&iucv_lock, flags);
-		}
-	spin_unlock_irqrestore (&iucv_lock, flags);
-
-	iucv_remove_handler(h);
-	kfree(h);
-
-	iucv_debug(1, "exiting");
-	return 0;
-}
-
-/**
- * iucv_accept:
- * @pathid:             Path identification number
- * @msglim_reqstd:      The number of outstanding messages requested.
- * @user_data:          Data specified by the iucv_connect function.
- * @flags1:             Contains options for this path.
- *     - IPPRTY (0x20)   Specifies if you want to send priority message.
- *     - IPRMDATA (0x80) Specifies whether your program can handle a message
- *                       in the parameter list.
- *     - IPQUSCE (0x40)  Specifies whether you want to quiesce the path being
- *		         established.
- * @handle:             Address of handler.
- * @pgm_data:           Application data passed to interrupt handlers.
- * @flags1_out:         Pointer to an int. If not NULL, on return the options for
- *                      the path are stored at the given location:
- *     - IPPRTY (0x20)  Indicates you may send a priority message.
- * @msglim:             Pointer to an __u16. If not NULL, on return the maximum
- *                      number of outstanding messages is stored at the given
- *                      location.
- *
- * This function is issued after the user receives a Connection Pending external
- * interrupt and now wishes to complete the IUCV communication path.
- * Returns:
- *   return code from CP
- */
-int
-iucv_accept(__u16 pathid, __u16 msglim_reqstd,
-	     __u8 user_data[16], int flags1,
-	     iucv_handle_t handle, void *pgm_data,
-	     int *flags1_out, __u16 * msglim)
-{
-	ulong b2f0_result = 0;
-	ulong flags;
-	struct list_head *lh;
-	handler *h = NULL;
-	iparml_control *parm;
-
-	iucv_debug(1, "entering");
-	iucv_debug(1, "pathid = %d", pathid);
-
-	/* Checking if handle is valid  */
-	spin_lock_irqsave (&iucv_lock, flags);
-	list_for_each(lh, &iucv_handler_table) {
-		if ((handler *)handle == list_entry(lh, handler, list)) {
-			h = (handler *)handle;
-			break;
-		}
-	}
-	spin_unlock_irqrestore (&iucv_lock, flags);
-
-	if (!h) {
-		if (handle)
-			printk(KERN_WARNING
-			       "%s: Handler not found in iucv_handler_table.\n",
-			       __FUNCTION__);
-		else
-			printk(KERN_WARNING
-			       "%s: NULL handle passed by application.\n",
-			       __FUNCTION__);
-		return -EINVAL;
-	}
-
-	parm = (iparml_control *)grab_param();
-
-	parm->ippathid = pathid;
-	parm->ipmsglim = msglim_reqstd;
-	if (user_data)
-		memcpy(parm->ipuser, user_data, sizeof(parm->ipuser));
-
-	parm->ipflags1 = (__u8)flags1;
-	b2f0_result = b2f0(ACCEPT, parm);
-
-	if (!b2f0_result) {
-		if (msglim)
-			*msglim = parm->ipmsglim;
-		if (pgm_data)
-			h->pgm_data = pgm_data;
-		if (flags1_out)
-			*flags1_out = (parm->ipflags1 & IPPRTY) ? IPPRTY : 0;
-	}
-	release_param(parm);
-
-	iucv_debug(1, "exiting");
-	return b2f0_result;
-}
-
-/**
- * iucv_connect:
- * @pathid:        Path identification number
- * @msglim_reqstd: Number of outstanding messages requested
- * @user_data:     16-byte user data
- * @userid:        8-byte of user identification
- * @system_name:   8-byte identifying the system name
- * @flags1:        Specifies options for this path:
- *     - IPPRTY (0x20)   Specifies if you want to send priority message.
- *     - IPRMDATA (0x80) Specifies whether your program can handle a message
- *                       in  the parameter list.
- *     - IPQUSCE (0x40)  Specifies whether you want to quiesce the path being
- *                       established.
- *     - IPLOCAL (0x01)  Allows an application to force the partner to be on the
- *                       local system. If local is specified then target class
- *                       cannot be specified.
- * @flags1_out:    Pointer to an int. If not NULL, on return the options for
- *                 the path are stored at the given location:
- *     - IPPRTY (0x20)   Indicates you may send a priority message.
- * @msglim:        Pointer to an __u16. If not NULL, on return the maximum
- *                 number of outstanding messages is stored at the given
- *                 location.
- * @handle:        Address of handler.
- * @pgm_data:      Application data to be passed to interrupt handlers.
- *
- * This function establishes an IUCV path. Although the connect may complete
- * successfully, you are not able to use the path until you receive an IUCV
- * Connection Complete external interrupt.
- * Returns: return code from CP, or one of the following
- *     - ENOMEM
- *     - return code from iucv_declare_buffer
- *     - EINVAL - invalid handle passed by application
- *     - EINVAL - pathid address is NULL
- *     - ENOMEM - pathid table storage allocation failed
- *     - return code from internal function add_pathid
- */
-int
-iucv_connect (__u16 *pathid, __u16 msglim_reqstd,
-	      __u8 user_data[16], __u8 userid[8],
-	      __u8 system_name[8], int flags1,
-	      int *flags1_out, __u16 * msglim,
-	      iucv_handle_t handle, void *pgm_data)
-{
-	iparml_control *parm;
-	iparml_control local_parm;
-	struct list_head *lh;
-	ulong b2f0_result = 0;
-	ulong flags;
-	int add_pathid_result = 0;
-	handler *h = NULL;
-	__u8 no_memory[16] = "NO MEMORY";
-
-	iucv_debug(1, "entering");
-
-	/* Checking if handle is valid  */
-	spin_lock_irqsave (&iucv_lock, flags);
-	list_for_each(lh, &iucv_handler_table) {
-		if ((handler *)handle == list_entry(lh, handler, list)) {
-			h = (handler *)handle;
-			break;
-		}
-	}
-	spin_unlock_irqrestore (&iucv_lock, flags);
-
-	if (!h) {
-		if (handle)
-			printk(KERN_WARNING
-			       "%s: Handler not found in iucv_handler_table.\n",
-			       __FUNCTION__);
-		else
-			printk(KERN_WARNING
-			       "%s: NULL handle passed by application.\n",
-			       __FUNCTION__);
-		return -EINVAL;
-	}
-
-	if (pathid == NULL) {
-		printk(KERN_WARNING "%s: NULL pathid pointer\n",
-		       __FUNCTION__);
-		return -EINVAL;
-	}
-
-	parm = (iparml_control *)grab_param();
-
-	parm->ipmsglim = msglim_reqstd;
-
-	if (user_data)
-		memcpy(parm->ipuser, user_data, sizeof(parm->ipuser));
-
-	if (userid) {
-		memcpy(parm->ipvmid, userid, sizeof(parm->ipvmid));
-		ASCEBC(parm->ipvmid, sizeof(parm->ipvmid));
-		EBC_TOUPPER(parm->ipvmid, sizeof(parm->ipvmid));
-	}
-
-	if (system_name) {
-		memcpy(parm->iptarget, system_name, sizeof(parm->iptarget));
-		ASCEBC(parm->iptarget, sizeof(parm->iptarget));
-		EBC_TOUPPER(parm->iptarget, sizeof(parm->iptarget));
-	}
-
-	/* In order to establish an IUCV connection, the procedure is:
-         *
-         * b2f0(CONNECT)
-         * take the ippathid from the b2f0 call
-         * register the handler to the ippathid
-         *
-         * Unfortunately, the ConnectionEstablished message gets sent after the
-         * b2f0(CONNECT) call but before the register is handled.
-         *
-         * In order for this race condition to be eliminated, the IUCV Control
-         * Interrupts must be disabled for the above procedure.
-         *
-         * David Kennedy <dkennedy@linuxcare.com>
-         */
-
-	/* Enable everything but IUCV Control messages */
-	iucv_setmask(~(AllInterrupts));
-	messagesDisabled = 1;
-
-	spin_lock_irqsave (&iucv_lock, flags);
-	parm->ipflags1 = (__u8)flags1;
-	b2f0_result = b2f0(CONNECT, parm);
-	memcpy(&local_parm, parm, sizeof(local_parm));
-	release_param(parm);
-	parm = &local_parm;
-	if (!b2f0_result)
-		add_pathid_result = __iucv_add_pathid(parm->ippathid, h);
-	spin_unlock_irqrestore (&iucv_lock, flags);
-
-	if (b2f0_result) {
-		iucv_setmask(~0);
-		messagesDisabled = 0;
-		return b2f0_result;
-	}
-
-	*pathid = parm->ippathid;
-
-	/* Enable everything again */
-	iucv_setmask(IUCVControlInterruptsFlag);
-
-	if (msglim)
-		*msglim = parm->ipmsglim;
-	if (flags1_out)
-		*flags1_out = (parm->ipflags1 & IPPRTY) ? IPPRTY : 0;
-
-	if (add_pathid_result) {
-		iucv_sever(*pathid, no_memory);
-		printk(KERN_WARNING "%s: add_pathid failed with rc ="
-			" %d\n", __FUNCTION__, add_pathid_result);
-		return(add_pathid_result);
-	}
-
-	iucv_debug(1, "exiting");
-	return b2f0_result;
-}
-
-/**
- * iucv_purge:
- * @pathid: Path identification number
- * @msgid:  Message ID of message to purge.
- * @srccls: Message class of the message to purge.
- * @audit:  Pointer to an __u32. If not NULL, on return, information about
- *          asynchronous errors that may have affected the normal completion
- *          of this message ist stored at the given location.
- *
- * Cancels a message you have sent.
- * Returns: return code from CP
- */
-int
-iucv_purge (__u16 pathid, __u32 msgid, __u32 srccls, __u32 *audit)
-{
-	iparml_purge *parm;
-	ulong b2f0_result = 0;
-
-	iucv_debug(1, "entering");
-	iucv_debug(1, "pathid = %d", pathid);
-
-	parm = (iparml_purge *)grab_param();
-
-	parm->ipmsgid = msgid;
-	parm->ippathid = pathid;
-	parm->ipsrccls = srccls;
-	parm->ipflags1 |= (IPSRCCLS | IPFGMID | IPFGPID);
-	b2f0_result = b2f0(PURGE, parm);
-
-	if (!b2f0_result && audit) {
-		memcpy(audit, parm->ipaudit, sizeof(parm->ipaudit));
-		/* parm->ipaudit has only 3 bytes */
-		*audit >>= 8;
-	}
-
-	release_param(parm);
-
-	iucv_debug(1, "b2f0_result = %ld", b2f0_result);
-	iucv_debug(1, "exiting");
-	return b2f0_result;
-}
-
-/**
- * iucv_query_generic:
- * @want_maxconn: Flag, describing which value is to be returned.
- *
- * Helper function for iucv_query_maxconn() and iucv_query_bufsize().
- *
- * Returns: The buffersize, if want_maxconn is 0; the maximum number of
- *           connections, if want_maxconn is 1 or an error-code < 0 on failure.
- */
-static int
-iucv_query_generic(int want_maxconn)
-{
-	register unsigned long reg0 asm ("0");
-	register unsigned long reg1 asm ("1");
-	iparml_purge *parm = (iparml_purge *)grab_param();
-	int bufsize, maxconn;
-	int ccode;
-
-	/**
-	 * Call b2f0 and store R0 (max buffer size),
-	 * R1 (max connections) and CC.
-	 */
-	reg0 = QUERY;
-	reg1 = virt_to_phys(parm);
-	asm volatile(
-		"	.long	0xb2f01000\n"
-		"	ipm	%0\n"
-		"	srl	%0,28\n"
-		: "=d" (ccode), "+d" (reg0), "+d" (reg1) : : "cc");
-	bufsize = reg0;
-	maxconn = reg1;
-	release_param(parm);
-
-	if (ccode)
-		return -EPERM;
-	if (want_maxconn)
-		return maxconn;
-	return bufsize;
-}
-
-/**
- * iucv_query_maxconn:
- *
- * Determines the maximum number of connections thay may be established.
- *
- * Returns: Maximum number of connections that can be.
- */
-ulong
-iucv_query_maxconn(void)
-{
-	return iucv_query_generic(1);
-}
-
-/**
- * iucv_query_bufsize:
- *
- * Determines the size of the external interrupt buffer.
- *
- * Returns: Size of external interrupt buffer.
- */
-ulong
-iucv_query_bufsize (void)
-{
-	return iucv_query_generic(0);
-}
-
-/**
- * iucv_quiesce:
- * @pathid:    Path identification number
- * @user_data: 16-byte user data
- *
- * Temporarily suspends incoming messages on an IUCV path.
- * You can later reactivate the path by invoking the iucv_resume function.
- * Returns: return code from CP
- */
-int
-iucv_quiesce (__u16 pathid, __u8 user_data[16])
-{
-	iparml_control *parm;
-	ulong b2f0_result = 0;
-
-	iucv_debug(1, "entering");
-	iucv_debug(1, "pathid = %d", pathid);
-
-	parm = (iparml_control *)grab_param();
-
-	memcpy(parm->ipuser, user_data, sizeof(parm->ipuser));
-	parm->ippathid = pathid;
-
-	b2f0_result = b2f0(QUIESCE, parm);
-	release_param(parm);
-
-	iucv_debug(1, "b2f0_result = %ld", b2f0_result);
-	iucv_debug(1, "exiting");
-
-	return b2f0_result;
-}
-
-/**
- * iucv_receive:
- * @pathid: Path identification number.
- * @buffer: Address of buffer to receive. Must be below 2G.
- * @buflen: Length of buffer to receive.
- * @msgid:  Specifies the message ID.
- * @trgcls: Specifies target class.
- * @flags1_out: Receives options for path on return.
- *    - IPNORPY (0x10)  Specifies whether a reply is required
- *    - IPPRTY (0x20)   Specifies if you want to send priority message
- *    - IPRMDATA (0x80) Specifies the data is contained in the parameter list
- * @residual_buffer: Receives the address of buffer updated by the number
- *                   of bytes you have received on return.
- * @residual_length: On return, receives one of the following values:
- *    - 0                          If the receive buffer is the same length as
- *                                 the message.
- *    - Remaining bytes in buffer  If the receive buffer is longer than the
- *                                 message.
- *    - Remaining bytes in message If the receive buffer is shorter than the
- *                                 message.
- *
- * This function receives messages that are being sent to you over established
- * paths.
- * Returns: return code from CP IUCV call; If the receive buffer is shorter
- *   than the message, always 5
- *   -EINVAL - buffer address is pointing to NULL
- */
-int
-iucv_receive (__u16 pathid, __u32 msgid, __u32 trgcls,
-	      void *buffer, ulong buflen,
-	      int *flags1_out, ulong * residual_buffer, ulong * residual_length)
-{
-	iparml_db *parm;
-	ulong b2f0_result;
-	int moved = 0;	/* number of bytes moved from parmlist to buffer */
-
-	iucv_debug(2, "entering");
-
-	if (!buffer)
-		return -EINVAL;
-
-	parm = (iparml_db *)grab_param();
-
-	parm->ipbfadr1 = (__u32) (addr_t) buffer;
-	parm->ipbfln1f = (__u32) ((ulong) buflen);
-	parm->ipmsgid = msgid;
-	parm->ippathid = pathid;
-	parm->iptrgcls = trgcls;
-	parm->ipflags1 = (IPFGPID | IPFGMID | IPFGMCL);
-
-	b2f0_result = b2f0(RECEIVE, parm);
-
-	if (!b2f0_result || b2f0_result == 5) {
-		if (flags1_out) {
-			iucv_debug(2, "*flags1_out = %d", *flags1_out);
-			*flags1_out = (parm->ipflags1 & (~0x07));
-			iucv_debug(2, "*flags1_out = %d", *flags1_out);
-		}
-
-		if (!(parm->ipflags1 & IPRMDATA)) {	/*msg not in parmlist */
-			if (residual_length)
-				*residual_length = parm->ipbfln1f;
-
-			if (residual_buffer)
-				*residual_buffer = parm->ipbfadr1;
-		} else {
-			moved = min_t (unsigned long, buflen, 8);
-
-			memcpy ((char *) buffer,
-				(char *) &parm->ipbfadr1, moved);
-
-			if (buflen < 8)
-				b2f0_result = 5;
-
-			if (residual_length)
-				*residual_length = abs (buflen - 8);
-
-			if (residual_buffer)
-				*residual_buffer = (ulong) (buffer + moved);
-		}
-	}
-	release_param(parm);
-
-	iucv_debug(2, "exiting");
-	return b2f0_result;
-}
-
-/*
- * Name: iucv_receive_array
- * Purpose: This function receives messages that are being sent to you
- *          over established paths.
- * Input: pathid - path identification number
- *        buffer - address of array of buffers
- *        buflen - total length of buffers
- *        msgid - specifies the message ID.
- *        trgcls - specifies target class
- * Output:
- *        flags1_out: Options for path.
- *          IPNORPY - 0x10 specifies whether a reply is required
- *          IPPRTY - 0x20 specifies if you want to send priority message
- *         IPRMDATA - 0x80 specifies the data is contained in the parameter list
- *       residual_buffer - address points to the current list entry IUCV
- *                         is working on.
- *       residual_length -
- *              Contains one of the following values, if the receive buffer is:
- *               The same length as the message, this field is zero.
- *               Longer than the message, this field contains the number of
- *                bytes remaining in the buffer.
- *               Shorter than the message, this field contains the residual
- *                count (that is, the number of bytes remaining in the
- *                message that does not fit into the buffer. In this case
- *		  b2f0_result = 5.
- * Return: b2f0_result - return code from CP
- *         (-EINVAL) - buffer address is NULL
- */
-int
-iucv_receive_array (__u16 pathid,
-		    __u32 msgid, __u32 trgcls,
-		    iucv_array_t * buffer, ulong buflen,
-		    int *flags1_out,
-		    ulong * residual_buffer, ulong * residual_length)
-{
-	iparml_db *parm;
-	ulong b2f0_result;
-	int i = 0, moved = 0, need_to_move = 8, dyn_len;
-
-	iucv_debug(2, "entering");
-
-	if (!buffer)
-		return -EINVAL;
-
-	parm = (iparml_db *)grab_param();
-
-	parm->ipbfadr1 = (__u32) ((ulong) buffer);
-	parm->ipbfln1f = (__u32) buflen;
-	parm->ipmsgid = msgid;
-	parm->ippathid = pathid;
-	parm->iptrgcls = trgcls;
-	parm->ipflags1 = (IPBUFLST | IPFGPID | IPFGMID | IPFGMCL);
-
-	b2f0_result = b2f0(RECEIVE, parm);
-
-	if (!b2f0_result || b2f0_result == 5) {
-
-		if (flags1_out) {
-			iucv_debug(2, "*flags1_out = %d", *flags1_out);
-			*flags1_out = (parm->ipflags1 & (~0x07));
-			iucv_debug(2, "*flags1_out = %d", *flags1_out);
-		}
-
-		if (!(parm->ipflags1 & IPRMDATA)) {	/*msg not in parmlist */
-
-			if (residual_length)
-				*residual_length = parm->ipbfln1f;
-
-			if (residual_buffer)
-				*residual_buffer = parm->ipbfadr1;
-
-		} else {
-			/* copy msg from parmlist to users array. */
-
-			while ((moved < 8) && (moved < buflen)) {
-				dyn_len =
-				    min_t (unsigned int,
-					 (buffer + i)->length, need_to_move);
-
-				memcpy ((char *)((ulong)((buffer + i)->address)),
-					((char *) &parm->ipbfadr1) + moved,
-					dyn_len);
-
-				moved += dyn_len;
-				need_to_move -= dyn_len;
-
-				(buffer + i)->address =
-				    	(__u32)
-				((ulong)(__u8 *) ((ulong)(buffer + i)->address)
-						+ dyn_len);
-
-				(buffer + i)->length -= dyn_len;
-				i++;
-			}
-
-			if (need_to_move)	/* buflen < 8 bytes */
-				b2f0_result = 5;
-
-			if (residual_length)
-				*residual_length = abs (buflen - 8);
-
-			if (residual_buffer) {
-				if (!moved)
-					*residual_buffer = (ulong) buffer;
-				else
-					*residual_buffer =
-					    (ulong) (buffer + (i - 1));
-			}
-
-		}
-	}
-	release_param(parm);
-
-	iucv_debug(2, "exiting");
-	return b2f0_result;
-}
-
-/**
- * iucv_reject:
- * @pathid: Path identification number.
- * @msgid:  Message ID of the message to reject.
- * @trgcls: Target class of the message to reject.
- * Returns: return code from CP
- *
- * Refuses a specified message. Between the time you are notified of a
- * message and the time that you complete the message, the message may
- * be rejected.
- */
-int
-iucv_reject (__u16 pathid, __u32 msgid, __u32 trgcls)
-{
-	iparml_db *parm;
-	ulong b2f0_result = 0;
-
-	iucv_debug(1, "entering");
-	iucv_debug(1, "pathid = %d", pathid);
-
-	parm = (iparml_db *)grab_param();
-
-	parm->ippathid = pathid;
-	parm->ipmsgid = msgid;
-	parm->iptrgcls = trgcls;
-	parm->ipflags1 = (IPFGMCL | IPFGMID | IPFGPID);
-
-	b2f0_result = b2f0(REJECT, parm);
-	release_param(parm);
-
-	iucv_debug(1, "b2f0_result = %ld", b2f0_result);
-	iucv_debug(1, "exiting");
-
-	return b2f0_result;
-}
-
-/*
- * Name: iucv_reply
- * Purpose: This function responds to the two-way messages that you
- *          receive. You must identify completely the message to
- *          which you wish to reply. ie, pathid, msgid, and trgcls.
- * Input: pathid - path identification number
- *        msgid - specifies the message ID.
- *        trgcls - specifies target class
- *        flags1 - option for path
- *                 IPPRTY- 0x20 - specifies if you want to send priority message
- *        buffer - address of reply buffer
- *        buflen - length of reply buffer
- * Output: ipbfadr2 - Address of buffer updated by the number
- *                    of bytes you have moved.
- *         ipbfln2f - Contains one of the following values:
- *              If the answer buffer is the same length as the reply, this field
- *               contains zero.
- *              If the answer buffer is longer than the reply, this field contains
- *               the number of bytes remaining in the buffer.
- *              If the answer buffer is shorter than the reply, this field contains
- *               a residual count (that is, the number of bytes remianing in the
- *               reply that does not fit into the buffer. In this
- *                case b2f0_result = 5.
- * Return: b2f0_result - return code from CP
- *         (-EINVAL) - buffer address is NULL
- */
-int
-iucv_reply (__u16 pathid,
-	    __u32 msgid, __u32 trgcls,
-	    int flags1,
-	    void *buffer, ulong buflen, ulong * ipbfadr2, ulong * ipbfln2f)
-{
-	iparml_db *parm;
-	ulong b2f0_result;
-
-	iucv_debug(2, "entering");
-
-	if (!buffer)
-		return -EINVAL;
-
-	parm = (iparml_db *)grab_param();
-
-	parm->ipbfadr2 = (__u32) ((ulong) buffer);
-	parm->ipbfln2f = (__u32) buflen;	/* length of message */
-	parm->ippathid = pathid;
-	parm->ipmsgid = msgid;
-	parm->iptrgcls = trgcls;
-	parm->ipflags1 = (__u8) flags1;	/* priority message */
-
-	b2f0_result = b2f0(REPLY, parm);
-
-	if ((!b2f0_result) || (b2f0_result == 5)) {
-		if (ipbfadr2)
-			*ipbfadr2 = parm->ipbfadr2;
-		if (ipbfln2f)
-			*ipbfln2f = parm->ipbfln2f;
-	}
-	release_param(parm);
-
-	iucv_debug(2, "exiting");
-
-	return b2f0_result;
-}
-
-/*
- * Name: iucv_reply_array
- * Purpose: This function responds to the two-way messages that you
- *          receive. You must identify completely the message to
- *          which you wish to reply. ie, pathid, msgid, and trgcls.
- *          The array identifies a list of addresses and lengths of
- *          discontiguous buffers that contains the reply data.
- * Input: pathid - path identification number
- *        msgid - specifies the message ID.
- *        trgcls - specifies target class
- *        flags1 - option for path
- *                 IPPRTY- specifies if you want to send priority message
- *        buffer - address of array of reply buffers
- *        buflen - total length of reply buffers
- * Output: ipbfadr2 - Address of buffer which IUCV is currently working on.
- *         ipbfln2f - Contains one of the following values:
- *              If the answer buffer is the same length as the reply, this field
- *               contains zero.
- *              If the answer buffer is longer than the reply, this field contains
- *               the number of bytes remaining in the buffer.
- *              If the answer buffer is shorter than the reply, this field contains
- *               a residual count (that is, the number of bytes remianing in the
- *               reply that does not fit into the buffer. In this
- *               case b2f0_result = 5.
- * Return: b2f0_result - return code from CP
- *             (-EINVAL) - buffer address is NULL
-*/
-int
-iucv_reply_array (__u16 pathid,
-		  __u32 msgid, __u32 trgcls,
-		  int flags1,
-		  iucv_array_t * buffer,
-		  ulong buflen, ulong * ipbfadr2, ulong * ipbfln2f)
-{
-	iparml_db *parm;
-	ulong b2f0_result;
-
-	iucv_debug(2, "entering");
-
-	if (!buffer)
-		return -EINVAL;
-
-	parm = (iparml_db *)grab_param();
-
-	parm->ipbfadr2 = (__u32) ((ulong) buffer);
-	parm->ipbfln2f = buflen;	/* length of message */
-	parm->ippathid = pathid;
-	parm->ipmsgid = msgid;
-	parm->iptrgcls = trgcls;
-	parm->ipflags1 = (IPANSLST | flags1);
-
-	b2f0_result = b2f0(REPLY, parm);
-
-	if ((!b2f0_result) || (b2f0_result == 5)) {
-
-		if (ipbfadr2)
-			*ipbfadr2 = parm->ipbfadr2;
-		if (ipbfln2f)
-			*ipbfln2f = parm->ipbfln2f;
-	}
-	release_param(parm);
-
-	iucv_debug(2, "exiting");
-
-	return b2f0_result;
-}
-
-/*
- * Name: iucv_reply_prmmsg
- * Purpose: This function responds to the two-way messages that you
- *          receive. You must identify completely the message to
- *          which you wish to reply. ie, pathid, msgid, and trgcls.
- *          Prmmsg signifies the data is moved into the
- *          parameter list.
- * Input: pathid - path identification number
- *        msgid - specifies the message ID.
- *        trgcls - specifies target class
- *        flags1 - option for path
- *                 IPPRTY- specifies if you want to send priority message
- *        prmmsg - 8-bytes of data to be placed into the parameter
- *                 list.
- * Output: NA
- * Return: b2f0_result - return code from CP
-*/
-int
-iucv_reply_prmmsg (__u16 pathid,
-		   __u32 msgid, __u32 trgcls, int flags1, __u8 prmmsg[8])
-{
-	iparml_dpl *parm;
-	ulong b2f0_result;
-
-	iucv_debug(2, "entering");
-
-	parm = (iparml_dpl *)grab_param();
-
-	parm->ippathid = pathid;
-	parm->ipmsgid = msgid;
-	parm->iptrgcls = trgcls;
-	memcpy(parm->iprmmsg, prmmsg, sizeof (parm->iprmmsg));
-	parm->ipflags1 = (IPRMDATA | flags1);
-
-	b2f0_result = b2f0(REPLY, parm);
-	release_param(parm);
-
-	iucv_debug(2, "exiting");
-
-	return b2f0_result;
-}
-
-/**
- * iucv_resume:
- * @pathid:    Path identification number
- * @user_data: 16-byte of user data
- *
- * This function restores communication over a quiesced path.
- * Returns: return code from CP
- */
-int
-iucv_resume (__u16 pathid, __u8 user_data[16])
-{
-	iparml_control *parm;
-	ulong b2f0_result = 0;
-
-	iucv_debug(1, "entering");
-	iucv_debug(1, "pathid = %d", pathid);
-
-	parm = (iparml_control *)grab_param();
-
-	memcpy (parm->ipuser, user_data, sizeof (*user_data));
-	parm->ippathid = pathid;
-
-	b2f0_result = b2f0(RESUME, parm);
-	release_param(parm);
-
-	iucv_debug(1, "exiting");
-
-	return b2f0_result;
-}
-
-/*
- * Name: iucv_send
- * Purpose: sends messages
- * Input: pathid - ushort, pathid
- *        msgid  - ulong *, id of message returned to caller
- *        trgcls - ulong, target message class
- *        srccls - ulong, source message class
- *        msgtag - ulong, message tag
- *	  flags1  - Contains options for this path.
- *		IPPRTY - Ox20 - specifies if you want to send a priority message.
- *        buffer - pointer to buffer
- *        buflen - ulong, length of buffer
- * Output: b2f0_result - return code from b2f0 call
- *         msgid - returns message id
- */
-int
-iucv_send (__u16 pathid, __u32 * msgid,
-	   __u32 trgcls, __u32 srccls,
-	   __u32 msgtag, int flags1, void *buffer, ulong buflen)
-{
-	iparml_db *parm;
-	ulong b2f0_result;
-
-	iucv_debug(2, "entering");
-
-	if (!buffer)
-		return -EINVAL;
-
-	parm = (iparml_db *)grab_param();
-
-	parm->ipbfadr1 = (__u32) ((ulong) buffer);
-	parm->ippathid = pathid;
-	parm->iptrgcls = trgcls;
-	parm->ipbfln1f = (__u32) buflen;	/* length of message */
-	parm->ipsrccls = srccls;
-	parm->ipmsgtag = msgtag;
-	parm->ipflags1 = (IPNORPY | flags1);	/* one way priority message */
-
-	b2f0_result = b2f0(SEND, parm);
-
-	if ((!b2f0_result) && (msgid))
-		*msgid = parm->ipmsgid;
-	release_param(parm);
-
-	iucv_debug(2, "exiting");
-
-	return b2f0_result;
-}
-
-/*
- * Name: iucv_send_array
- * Purpose: This function transmits data to another application.
- *          The contents of buffer is the address of the array of
- *          addresses and lengths of discontiguous buffers that hold
- *          the message text. This is a one-way message and the
- *          receiver will not reply to the message.
- * Input: pathid - path identification number
- *        trgcls - specifies target class
- *        srccls - specifies the source message class
- *        msgtag - specifies a tag to be associated witht the message
- *        flags1 - option for path
- *                 IPPRTY- specifies if you want to send priority message
- *        buffer - address of array of send buffers
- *        buflen - total length of send buffers
- * Output: msgid - specifies the message ID.
- * Return: b2f0_result - return code from CP
- *         (-EINVAL) - buffer address is NULL
- */
-int
-iucv_send_array (__u16 pathid,
-		 __u32 * msgid,
-		 __u32 trgcls,
-		 __u32 srccls,
-		 __u32 msgtag, int flags1, iucv_array_t * buffer, ulong buflen)
-{
-	iparml_db *parm;
-	ulong b2f0_result;
-
-	iucv_debug(2, "entering");
-
-	if (!buffer)
-		return -EINVAL;
-
-	parm = (iparml_db *)grab_param();
-
-	parm->ippathid = pathid;
-	parm->iptrgcls = trgcls;
-	parm->ipbfadr1 = (__u32) ((ulong) buffer);
-	parm->ipbfln1f = (__u32) buflen;	/* length of message */
-	parm->ipsrccls = srccls;
-	parm->ipmsgtag = msgtag;
-	parm->ipflags1 = (IPNORPY | IPBUFLST | flags1);
-	b2f0_result = b2f0(SEND, parm);
-
-	if ((!b2f0_result) && (msgid))
-		*msgid = parm->ipmsgid;
-	release_param(parm);
-
-	iucv_debug(2, "exiting");
-	return b2f0_result;
-}
-
-/*
- * Name: iucv_send_prmmsg
- * Purpose: This function transmits data to another application.
- *          Prmmsg specifies that the 8-bytes of data are to be moved
- *          into the parameter list. This is a one-way message and the
- *          receiver will not reply to the message.
- * Input: pathid - path identification number
- *        trgcls - specifies target class
- *        srccls - specifies the source message class
- *        msgtag - specifies a tag to be associated with the message
- *        flags1 - option for path
- *                 IPPRTY- specifies if you want to send priority message
- *        prmmsg - 8-bytes of data to be placed into parameter list
- * Output: msgid - specifies the message ID.
- * Return: b2f0_result - return code from CP
-*/
-int
-iucv_send_prmmsg (__u16 pathid,
-		  __u32 * msgid,
-		  __u32 trgcls,
-		  __u32 srccls, __u32 msgtag, int flags1, __u8 prmmsg[8])
-{
-	iparml_dpl *parm;
-	ulong b2f0_result;
-
-	iucv_debug(2, "entering");
-
-	parm = (iparml_dpl *)grab_param();
-
-	parm->ippathid = pathid;
-	parm->iptrgcls = trgcls;
-	parm->ipsrccls = srccls;
-	parm->ipmsgtag = msgtag;
-	parm->ipflags1 = (IPRMDATA | IPNORPY | flags1);
-	memcpy(parm->iprmmsg, prmmsg, sizeof(parm->iprmmsg));
-
-	b2f0_result = b2f0(SEND, parm);
-
-	if ((!b2f0_result) && (msgid))
-		*msgid = parm->ipmsgid;
-	release_param(parm);
-
-	iucv_debug(2, "exiting");
-
-	return b2f0_result;
-}
-
-/*
- * Name: iucv_send2way
- * Purpose: This function transmits data to another application.
- *          Data to be transmitted is in a buffer. The receiver
- *          of the send is expected to reply to the message and
- *          a buffer is provided into which IUCV moves the reply
- *          to this message.
- * Input: pathid - path identification number
- *        trgcls - specifies target class
- *        srccls - specifies the source message class
- *        msgtag - specifies a tag associated with the message
- *        flags1 - option for path
- *                 IPPRTY- specifies if you want to send priority message
- *        buffer - address of send buffer
- *        buflen - length of send buffer
- *        ansbuf - address of buffer to reply with
- *        anslen - length of buffer to reply with
- * Output: msgid - specifies the message ID.
- * Return: b2f0_result - return code from CP
- *         (-EINVAL) - buffer or ansbuf address is NULL
- */
-int
-iucv_send2way (__u16 pathid,
-	       __u32 * msgid,
-	       __u32 trgcls,
-	       __u32 srccls,
-	       __u32 msgtag,
-	       int flags1,
-	       void *buffer, ulong buflen, void *ansbuf, ulong anslen)
-{
-	iparml_db *parm;
-	ulong b2f0_result;
-
-	iucv_debug(2, "entering");
-
-	if (!buffer || !ansbuf)
-		return -EINVAL;
-
-	parm = (iparml_db *)grab_param();
-
-	parm->ippathid = pathid;
-	parm->iptrgcls = trgcls;
-	parm->ipbfadr1 = (__u32) ((ulong) buffer);
-	parm->ipbfln1f = (__u32) buflen;	/* length of message */
-	parm->ipbfadr2 = (__u32) ((ulong) ansbuf);
-	parm->ipbfln2f = (__u32) anslen;
-	parm->ipsrccls = srccls;
-	parm->ipmsgtag = msgtag;
-	parm->ipflags1 = flags1;	/* priority message */
-
-	b2f0_result = b2f0(SEND, parm);
-
-	if ((!b2f0_result) && (msgid))
-		*msgid = parm->ipmsgid;
-	release_param(parm);
-
-	iucv_debug(2, "exiting");
-
-	return b2f0_result;
-}
-
-/*
- * Name: iucv_send2way_array
- * Purpose: This function transmits data to another application.
- *          The contents of buffer is the address of the array of
- *          addresses and lengths of discontiguous buffers that hold
- *          the message text. The receiver of the send is expected to
- *          reply to the message and a buffer is provided into which
- *          IUCV moves the reply to this message.
- * Input: pathid - path identification number
- *        trgcls - specifies target class
- *        srccls - specifies the source message class
- *        msgtag - spcifies a tag to be associated with the message
- *        flags1 - option for path
- *                 IPPRTY- specifies if you want to send priority message
- *        buffer - address of array of send buffers
- *        buflen - total length of send buffers
- *        ansbuf - address of buffer to reply with
- *        anslen - length of buffer to reply with
- * Output: msgid - specifies the message ID.
- * Return: b2f0_result - return code from CP
- *         (-EINVAL) - buffer address is NULL
- */
-int
-iucv_send2way_array (__u16 pathid,
-		     __u32 * msgid,
-		     __u32 trgcls,
-		     __u32 srccls,
-		     __u32 msgtag,
-		     int flags1,
-		     iucv_array_t * buffer,
-		     ulong buflen, iucv_array_t * ansbuf, ulong anslen)
-{
-	iparml_db *parm;
-	ulong b2f0_result;
-
-	iucv_debug(2, "entering");
-
-	if (!buffer || !ansbuf)
-		return -EINVAL;
-
-	parm = (iparml_db *)grab_param();
-
-	parm->ippathid = pathid;
-	parm->iptrgcls = trgcls;
-	parm->ipbfadr1 = (__u32) ((ulong) buffer);
-	parm->ipbfln1f = (__u32) buflen;	/* length of message */
-	parm->ipbfadr2 = (__u32) ((ulong) ansbuf);
-	parm->ipbfln2f = (__u32) anslen;
-	parm->ipsrccls = srccls;
-	parm->ipmsgtag = msgtag;
-	parm->ipflags1 = (IPBUFLST | IPANSLST | flags1);
-	b2f0_result = b2f0(SEND, parm);
-	if ((!b2f0_result) && (msgid))
-		*msgid = parm->ipmsgid;
-	release_param(parm);
-
-	iucv_debug(2, "exiting");
-	return b2f0_result;
-}
-
-/*
- * Name: iucv_send2way_prmmsg
- * Purpose: This function transmits data to another application.
- *          Prmmsg specifies that the 8-bytes of data are to be moved
- *          into the parameter list. This is a two-way message and the
- *          receiver of the message is expected to reply. A buffer
- *          is provided into which IUCV moves the reply to this
- *          message.
- * Input: pathid - path identification number
- *        trgcls - specifies target class
- *        srccls - specifies the source message class
- *        msgtag - specifies a tag to be associated with the message
- *        flags1 - option for path
- *                 IPPRTY- specifies if you want to send priority message
- *        prmmsg - 8-bytes of data to be placed in parameter list
- *        ansbuf - address of buffer to reply with
- *        anslen - length of buffer to reply with
- * Output: msgid - specifies the message ID.
- * Return: b2f0_result - return code from CP
- *         (-EINVAL) - buffer address is NULL
-*/
-int
-iucv_send2way_prmmsg (__u16 pathid,
-		      __u32 * msgid,
-		      __u32 trgcls,
-		      __u32 srccls,
-		      __u32 msgtag,
-		      ulong flags1, __u8 prmmsg[8], void *ansbuf, ulong anslen)
-{
-	iparml_dpl *parm;
-	ulong b2f0_result;
-
-	iucv_debug(2, "entering");
-
-	if (!ansbuf)
-		return -EINVAL;
-
-	parm = (iparml_dpl *)grab_param();
-
-	parm->ippathid = pathid;
-	parm->iptrgcls = trgcls;
-	parm->ipsrccls = srccls;
-	parm->ipmsgtag = msgtag;
-	parm->ipbfadr2 = (__u32) ((ulong) ansbuf);
-	parm->ipbfln2f = (__u32) anslen;
-	parm->ipflags1 = (IPRMDATA | flags1);	/* message in prmlist */
-	memcpy(parm->iprmmsg, prmmsg, sizeof(parm->iprmmsg));
-
-	b2f0_result = b2f0(SEND, parm);
-
-	if ((!b2f0_result) && (msgid))
-		*msgid = parm->ipmsgid;
-	release_param(parm);
-
-	iucv_debug(2, "exiting");
-
-	return b2f0_result;
-}
-
-/*
- * Name: iucv_send2way_prmmsg_array
- * Purpose: This function transmits data to another application.
- *          Prmmsg specifies that the 8-bytes of data are to be moved
- *          into the parameter list. This is a two-way message and the
- *          receiver of the message is expected to reply. A buffer
- *          is provided into which IUCV moves the reply to this
- *          message. The contents of ansbuf is the address of the
- *          array of addresses and lengths of discontiguous buffers
- *          that contain the reply.
- * Input: pathid - path identification number
- *        trgcls - specifies target class
- *        srccls - specifies the source message class
- *        msgtag - specifies a tag to be associated with the message
- *        flags1 - option for path
- *                 IPPRTY- specifies if you want to send priority message
- *        prmmsg - 8-bytes of data to be placed into the parameter list
- *        ansbuf - address of buffer to reply with
- *        anslen - length of buffer to reply with
- * Output: msgid - specifies the message ID.
- * Return: b2f0_result - return code from CP
- *         (-EINVAL) - ansbuf address is NULL
- */
-int
-iucv_send2way_prmmsg_array (__u16 pathid,
-			    __u32 * msgid,
-			    __u32 trgcls,
-			    __u32 srccls,
-			    __u32 msgtag,
-			    int flags1,
-			    __u8 prmmsg[8],
-			    iucv_array_t * ansbuf, ulong anslen)
-{
-	iparml_dpl *parm;
-	ulong b2f0_result;
-
-	iucv_debug(2, "entering");
-
-	if (!ansbuf)
-		return -EINVAL;
-
-	parm = (iparml_dpl *)grab_param();
-
-	parm->ippathid = pathid;
-	parm->iptrgcls = trgcls;
-	parm->ipsrccls = srccls;
-	parm->ipmsgtag = msgtag;
-	parm->ipbfadr2 = (__u32) ((ulong) ansbuf);
-	parm->ipbfln2f = (__u32) anslen;
-	parm->ipflags1 = (IPRMDATA | IPANSLST | flags1);
-	memcpy(parm->iprmmsg, prmmsg, sizeof(parm->iprmmsg));
-	b2f0_result = b2f0(SEND, parm);
-	if ((!b2f0_result) && (msgid))
-		*msgid = parm->ipmsgid;
-	release_param(parm);
-
-	iucv_debug(2, "exiting");
-	return b2f0_result;
-}
-
-void
-iucv_setmask_cpuid (void *result)
-{
-        iparml_set_mask *parm;
-
-        iucv_debug(1, "entering");
-        parm = (iparml_set_mask *)grab_param();
-        parm->ipmask = *((__u8*)result);
-        *((ulong *)result) = b2f0(SETMASK, parm);
-        release_param(parm);
-
-        iucv_debug(1, "b2f0_result = %ld", *((ulong *)result));
-        iucv_debug(1, "exiting");
-}
-
-/*
- * Name: iucv_setmask
- * Purpose: This function enables or disables the following IUCV
- *          external interruptions: Nonpriority and priority message
- *          interrupts, nonpriority and priority reply interrupts.
- * Input: SetMaskFlag - options for interrupts
- *           0x80 - Nonpriority_MessagePendingInterruptsFlag
- *           0x40 - Priority_MessagePendingInterruptsFlag
- *           0x20 - Nonpriority_MessageCompletionInterruptsFlag
- *           0x10 - Priority_MessageCompletionInterruptsFlag
- *           0x08 - IUCVControlInterruptsFlag
- * Output: NA
- * Return: b2f0_result - return code from CP
-*/
-int
-iucv_setmask (int SetMaskFlag)
-{
-	union {
-		ulong result;
-		__u8  param;
-	} u;
-	int cpu;
-
-	u.param = SetMaskFlag;
-	cpu = get_cpu();
-	smp_call_function_on(iucv_setmask_cpuid, &u, 0, 1, iucv_cpuid);
-	put_cpu();
-
-	return u.result;
-}
-
-/**
- * iucv_sever:
- * @pathid:    Path identification number
- * @user_data: 16-byte of user data
- *
- * This function terminates an iucv path.
- * Returns: return code from CP
- */
-int
-iucv_sever(__u16 pathid, __u8 user_data[16])
-{
-	iparml_control *parm;
-	ulong b2f0_result = 0;
-
-	iucv_debug(1, "entering");
-	parm = (iparml_control *)grab_param();
-
-	memcpy(parm->ipuser, user_data, sizeof(parm->ipuser));
-	parm->ippathid = pathid;
-
-	b2f0_result = b2f0(SEVER, parm);
-
-	if (!b2f0_result)
-		iucv_remove_pathid(pathid);
-	release_param(parm);
-
-	iucv_debug(1, "exiting");
-	return b2f0_result;
-}
-
-/*
- * Interrupt Handlers
- *******************************************************************************/
-
-/**
- * iucv_irq_handler:
- * @regs: Current registers
- * @code: irq code
- *
- * Handles external interrupts coming in from CP.
- * Places the interrupt buffer on a queue and schedules iucv_tasklet_handler().
- */
-static void
-iucv_irq_handler(__u16 code)
-{
-	iucv_irqdata *irqdata;
-
-	irqdata = kmalloc(sizeof(iucv_irqdata), GFP_ATOMIC);
-	if (!irqdata) {
-		printk(KERN_WARNING "%s: out of memory\n", __FUNCTION__);
-		return;
-	}
-
-	memcpy(&irqdata->data, iucv_external_int_buffer,
-	       sizeof(iucv_GeneralInterrupt));
-
-	spin_lock(&iucv_irq_queue_lock);
-	list_add_tail(&irqdata->queue, &iucv_irq_queue);
-	spin_unlock(&iucv_irq_queue_lock);
-
-	tasklet_schedule(&iucv_tasklet);
-}
-
-/**
- * iucv_do_int:
- * @int_buf: Pointer to copy of external interrupt buffer
- *
- * The workhorse for handling interrupts queued by iucv_irq_handler().
- * This function is called from the bottom half iucv_tasklet_handler().
- */
-static void
-iucv_do_int(iucv_GeneralInterrupt * int_buf)
-{
-	handler *h = NULL;
-	struct list_head *lh;
-	ulong flags;
-	iucv_interrupt_ops_t *interrupt = NULL;	/* interrupt addresses */
-	__u8 temp_buff1[24], temp_buff2[24];	/* masked handler id. */
-	int rc = 0, j = 0;
-	__u8 no_listener[16] = "NO LISTENER";
-
-	iucv_debug(2, "entering, pathid %d, type %02X",
-		 int_buf->ippathid, int_buf->iptype);
-	iucv_dumpit("External Interrupt Buffer:",
-		    int_buf, sizeof(iucv_GeneralInterrupt));
-
-	ASCEBC (no_listener, 16);
-
-	if (int_buf->iptype != 01) {
-		if ((int_buf->ippathid) > (max_connections - 1)) {
-			printk(KERN_WARNING "%s: Got interrupt with pathid %d"
-			       " > max_connections (%ld)\n", __FUNCTION__,
-			       int_buf->ippathid, max_connections - 1);
-		} else {
-			h = iucv_pathid_table[int_buf->ippathid];
-			interrupt = h->interrupt_table;
-			iucv_dumpit("Handler:", h, sizeof(handler));
-		}
-	}
-
-	/* end of if statement */
-	switch (int_buf->iptype) {
-		case 0x01:		/* connection pending */
-			if (messagesDisabled) {
-			    iucv_setmask(~0);
-			    messagesDisabled = 0;
-			}
-			spin_lock_irqsave(&iucv_lock, flags);
-			list_for_each(lh, &iucv_handler_table) {
-				h = list_entry(lh, handler, list);
-				memcpy(temp_buff1, &(int_buf->ipvmid), 24);
-				memcpy(temp_buff2, &(h->id.userid), 24);
-				for (j = 0; j < 24; j++) {
-					temp_buff1[j] &= (h->id.mask)[j];
-					temp_buff2[j] &= (h->id.mask)[j];
-				}
-
-				iucv_dumpit("temp_buff1:",
-					    temp_buff1, sizeof(temp_buff1));
-				iucv_dumpit("temp_buff2",
-					    temp_buff2, sizeof(temp_buff2));
-
-				if (!memcmp (temp_buff1, temp_buff2, 24)) {
-
-					iucv_debug(2,
-						   "found a matching handler");
-					break;
-				} else
-					h = NULL;
-			}
-			spin_unlock_irqrestore (&iucv_lock, flags);
-			if (h) {
-				/* ADD PATH TO PATHID TABLE */
-				rc = iucv_add_pathid(int_buf->ippathid, h);
-				if (rc) {
-					iucv_sever (int_buf->ippathid,
-						    no_listener);
-					iucv_debug(1,
-						   "add_pathid failed, rc = %d",
-						   rc);
-				} else {
-					interrupt = h->interrupt_table;
-					if (interrupt->ConnectionPending) {
-						EBCASC (int_buf->ipvmid, 8);
-						interrupt->ConnectionPending(
-							(iucv_ConnectionPending *)int_buf,
-							h->pgm_data);
-					} else
-						iucv_sever(int_buf->ippathid,
-							   no_listener);
-				}
-			} else
-				iucv_sever(int_buf->ippathid, no_listener);
-			break;
-
-		case 0x02:		/*connection complete */
-			if (messagesDisabled) {
-			    iucv_setmask(~0);
-			    messagesDisabled = 0;
-			}
-			if (h) {
-				if (interrupt->ConnectionComplete)
-				{
-					interrupt->ConnectionComplete(
-						(iucv_ConnectionComplete *)int_buf,
-						h->pgm_data);
-				}
-				else
-					iucv_debug(1,
-						   "ConnectionComplete not called");
-			} else
-				iucv_sever(int_buf->ippathid, no_listener);
-			break;
-
-		case 0x03:		/* connection severed */
-			if (messagesDisabled) {
-			    iucv_setmask(~0);
-			    messagesDisabled = 0;
-			}
-			if (h) {
-				if (interrupt->ConnectionSevered)
-					interrupt->ConnectionSevered(
-						(iucv_ConnectionSevered *)int_buf,
-						h->pgm_data);
-
-				else
-					iucv_sever (int_buf->ippathid, no_listener);
-			} else
-				iucv_sever(int_buf->ippathid, no_listener);
-			break;
-
-		case 0x04:		/* connection quiesced */
-			if (messagesDisabled) {
-			    iucv_setmask(~0);
-			    messagesDisabled = 0;
-			}
-			if (h) {
-				if (interrupt->ConnectionQuiesced)
-					interrupt->ConnectionQuiesced(
-						(iucv_ConnectionQuiesced *)int_buf,
-						h->pgm_data);
-				else
-					iucv_debug(1,
-						   "ConnectionQuiesced not called");
-			}
-			break;
-
-		case 0x05:		/* connection resumed */
-			if (messagesDisabled) {
-			    iucv_setmask(~0);
-			    messagesDisabled = 0;
-			}
-			if (h) {
-				if (interrupt->ConnectionResumed)
-					interrupt->ConnectionResumed(
-						(iucv_ConnectionResumed *)int_buf,
-						h->pgm_data);
-				else
-					iucv_debug(1,
-						   "ConnectionResumed not called");
-			}
-			break;
-
-		case 0x06:		/* priority message complete */
-		case 0x07:		/* nonpriority message complete */
-			if (h) {
-				if (interrupt->MessageComplete)
-					interrupt->MessageComplete(
-						(iucv_MessageComplete *)int_buf,
-						h->pgm_data);
-				else
-					iucv_debug(2,
-						   "MessageComplete not called");
-			}
-			break;
-
-		case 0x08:		/* priority message pending  */
-		case 0x09:		/* nonpriority message pending  */
-			if (h) {
-				if (interrupt->MessagePending)
-					interrupt->MessagePending(
-						(iucv_MessagePending *) int_buf,
-						h->pgm_data);
-				else
-					iucv_debug(2,
-						   "MessagePending not called");
-			}
-			break;
-		default:		/* unknown iucv type */
-			printk(KERN_WARNING "%s: unknown iucv interrupt\n",
-			       __FUNCTION__);
-			break;
-	}			/* end switch */
-
-	iucv_debug(2, "exiting pathid %d, type %02X",
-		 int_buf->ippathid, int_buf->iptype);
-
-	return;
-}
-
-/**
- * iucv_tasklet_handler:
- *
- * This function loops over the queue of irq buffers and runs iucv_do_int()
- * on every queue element.
- */
-static void
-iucv_tasklet_handler(unsigned long ignored)
-{
-	struct list_head head;
-	struct list_head *next;
-	ulong  flags;
-
-	spin_lock_irqsave(&iucv_irq_queue_lock, flags);
-	list_add(&head, &iucv_irq_queue);
-	list_del_init(&iucv_irq_queue);
-	spin_unlock_irqrestore (&iucv_irq_queue_lock, flags);
-
-	next = head.next;
-	while (next != &head) {
-		iucv_irqdata *p = list_entry(next, iucv_irqdata, queue);
-
-		next = next->next;
-		iucv_do_int(&p->data);
-		kfree(p);
-	}
-
-	return;
-}
-
-subsys_initcall(iucv_init);
-module_exit(iucv_exit);
-
-/**
- * Export all public stuff
- */
-EXPORT_SYMBOL (iucv_bus);
-EXPORT_SYMBOL (iucv_root);
-EXPORT_SYMBOL (iucv_accept);
-EXPORT_SYMBOL (iucv_connect);
-#if 0
-EXPORT_SYMBOL (iucv_purge);
-EXPORT_SYMBOL (iucv_query_maxconn);
-EXPORT_SYMBOL (iucv_query_bufsize);
-EXPORT_SYMBOL (iucv_quiesce);
-#endif
-EXPORT_SYMBOL (iucv_receive);
-#if 0
-EXPORT_SYMBOL (iucv_receive_array);
-#endif
-EXPORT_SYMBOL (iucv_reject);
-#if 0
-EXPORT_SYMBOL (iucv_reply);
-EXPORT_SYMBOL (iucv_reply_array);
-EXPORT_SYMBOL (iucv_resume);
-#endif
-EXPORT_SYMBOL (iucv_reply_prmmsg);
-EXPORT_SYMBOL (iucv_send);
-EXPORT_SYMBOL (iucv_send2way);
-EXPORT_SYMBOL (iucv_send2way_array);
-EXPORT_SYMBOL (iucv_send2way_prmmsg);
-EXPORT_SYMBOL (iucv_send2way_prmmsg_array);
-#if 0
-EXPORT_SYMBOL (iucv_send_array);
-EXPORT_SYMBOL (iucv_send_prmmsg);
-EXPORT_SYMBOL (iucv_setmask);
-#endif
-EXPORT_SYMBOL (iucv_sever);
-EXPORT_SYMBOL (iucv_register_program);
-EXPORT_SYMBOL (iucv_unregister_program);