+++ /dev/null
-/*
- * 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);
+++ /dev/null
-/*
- * drivers/s390/net/iucv.h
- * IUCV base support.
- *
- * S390 version
- * Copyright (C) 2000 IBM Corporation
- * Author(s):Alan Altmark (Alan_Altmark@us.ibm.com)
- * Xenia Tkatschow (xenia@us.ibm.com)
- *
- *
- * Functionality:
- * To explore any of the IUCV functions, one must first register
- * their program using iucv_register_program(). Once your program has
- * successfully completed a register, it can exploit the other functions.
- * For furthur reference on all IUCV functionality, refer to the
- * CP Programming Services book, also available on the web
- * thru www.ibm.com/s390/vm/pubs, manual # SC24-5760
- *
- * Definition of Return Codes
- * -All positive return codes including zero are reflected back
- * from CP except for iucv_register_program. The definition of each
- * return code can be found in CP Programming Services book.
- * Also available on the web thru www.ibm.com/s390/vm/pubs, manual # SC24-5760
- * - Return Code of:
- * (-EINVAL) Invalid value
- * (-ENOMEM) storage allocation failed
- * pgmask defined in iucv_register_program will be set depending on input
- * paramters.
- *
- */
-
-#include <linux/types.h>
-#include <asm/debug.h>
-
-/**
- * Debug Facility stuff
- */
-#define IUCV_DBF_SETUP_NAME "iucv_setup"
-#define IUCV_DBF_SETUP_LEN 32
-#define IUCV_DBF_SETUP_PAGES 2
-#define IUCV_DBF_SETUP_NR_AREAS 1
-#define IUCV_DBF_SETUP_LEVEL 3
-
-#define IUCV_DBF_DATA_NAME "iucv_data"
-#define IUCV_DBF_DATA_LEN 128
-#define IUCV_DBF_DATA_PAGES 2
-#define IUCV_DBF_DATA_NR_AREAS 1
-#define IUCV_DBF_DATA_LEVEL 2
-
-#define IUCV_DBF_TRACE_NAME "iucv_trace"
-#define IUCV_DBF_TRACE_LEN 16
-#define IUCV_DBF_TRACE_PAGES 4
-#define IUCV_DBF_TRACE_NR_AREAS 1
-#define IUCV_DBF_TRACE_LEVEL 3
-
-#define IUCV_DBF_TEXT(name,level,text) \
- do { \
- debug_text_event(iucv_dbf_##name,level,text); \
- } while (0)
-
-#define IUCV_DBF_HEX(name,level,addr,len) \
- do { \
- debug_event(iucv_dbf_##name,level,(void*)(addr),len); \
- } while (0)
-
-DECLARE_PER_CPU(char[256], iucv_dbf_txt_buf);
-
-#define IUCV_DBF_TEXT_(name,level,text...) \
- do { \
- char* iucv_dbf_txt_buf = get_cpu_var(iucv_dbf_txt_buf); \
- sprintf(iucv_dbf_txt_buf, text); \
- debug_text_event(iucv_dbf_##name,level,iucv_dbf_txt_buf); \
- put_cpu_var(iucv_dbf_txt_buf); \
- } while (0)
-
-#define IUCV_DBF_SPRINTF(name,level,text...) \
- do { \
- debug_sprintf_event(iucv_dbf_trace, level, ##text ); \
- debug_sprintf_event(iucv_dbf_trace, level, text ); \
- } while (0)
-
-/**
- * some more debug stuff
- */
-#define IUCV_HEXDUMP16(importance,header,ptr) \
-PRINT_##importance(header "%02x %02x %02x %02x %02x %02x %02x %02x " \
- "%02x %02x %02x %02x %02x %02x %02x %02x\n", \
- *(((char*)ptr)),*(((char*)ptr)+1),*(((char*)ptr)+2), \
- *(((char*)ptr)+3),*(((char*)ptr)+4),*(((char*)ptr)+5), \
- *(((char*)ptr)+6),*(((char*)ptr)+7),*(((char*)ptr)+8), \
- *(((char*)ptr)+9),*(((char*)ptr)+10),*(((char*)ptr)+11), \
- *(((char*)ptr)+12),*(((char*)ptr)+13), \
- *(((char*)ptr)+14),*(((char*)ptr)+15)); \
-PRINT_##importance(header "%02x %02x %02x %02x %02x %02x %02x %02x " \
- "%02x %02x %02x %02x %02x %02x %02x %02x\n", \
- *(((char*)ptr)+16),*(((char*)ptr)+17), \
- *(((char*)ptr)+18),*(((char*)ptr)+19), \
- *(((char*)ptr)+20),*(((char*)ptr)+21), \
- *(((char*)ptr)+22),*(((char*)ptr)+23), \
- *(((char*)ptr)+24),*(((char*)ptr)+25), \
- *(((char*)ptr)+26),*(((char*)ptr)+27), \
- *(((char*)ptr)+28),*(((char*)ptr)+29), \
- *(((char*)ptr)+30),*(((char*)ptr)+31));
-
-static inline void
-iucv_hex_dump(unsigned char *buf, size_t len)
-{
- size_t i;
-
- for (i = 0; i < len; i++) {
- if (i && !(i % 16))
- printk("\n");
- printk("%02x ", *(buf + i));
- }
- printk("\n");
-}
-/**
- * end of debug stuff
- */
-
-#define uchar unsigned char
-#define ushort unsigned short
-#define ulong unsigned long
-#define iucv_handle_t void *
-
-/* flags1:
- * All flags are defined in the field IPFLAGS1 of each function
- * and can be found in CP Programming Services.
- * IPLOCAL - Indicates the connect can only be satisfied on the
- * local system
- * IPPRTY - Indicates a priority message
- * IPQUSCE - Indicates you do not want to receive messages on a
- * path until an iucv_resume is issued
- * IPRMDATA - Indicates that the message is in the parameter list
- */
-#define IPLOCAL 0x01
-#define IPPRTY 0x20
-#define IPQUSCE 0x40
-#define IPRMDATA 0x80
-
-/* flags1_out:
- * All flags are defined in the output field of IPFLAGS1 for each function
- * and can be found in CP Programming Services.
- * IPNORPY - Specifies this is a one-way message and no reply is expected.
- * IPPRTY - Indicates a priority message is permitted. Defined in flags1.
- */
-#define IPNORPY 0x10
-
-#define Nonpriority_MessagePendingInterruptsFlag 0x80
-#define Priority_MessagePendingInterruptsFlag 0x40
-#define Nonpriority_MessageCompletionInterruptsFlag 0x20
-#define Priority_MessageCompletionInterruptsFlag 0x10
-#define IUCVControlInterruptsFlag 0x08
-#define AllInterrupts 0xf8
-/*
- * Mapping of external interrupt buffers should be used with the corresponding
- * interrupt types.
- * Names: iucv_ConnectionPending -> connection pending
- * iucv_ConnectionComplete -> connection complete
- * iucv_ConnectionSevered -> connection severed
- * iucv_ConnectionQuiesced -> connection quiesced
- * iucv_ConnectionResumed -> connection resumed
- * iucv_MessagePending -> message pending
- * iucv_MessageComplete -> message complete
- */
-typedef struct {
- u16 ippathid;
- uchar ipflags1;
- uchar iptype;
- u16 ipmsglim;
- u16 res1;
- uchar ipvmid[8];
- uchar ipuser[16];
- u32 res3;
- uchar ippollfg;
- uchar res4[3];
-} iucv_ConnectionPending;
-
-typedef struct {
- u16 ippathid;
- uchar ipflags1;
- uchar iptype;
- u16 ipmsglim;
- u16 res1;
- uchar res2[8];
- uchar ipuser[16];
- u32 res3;
- uchar ippollfg;
- uchar res4[3];
-} iucv_ConnectionComplete;
-
-typedef struct {
- u16 ippathid;
- uchar res1;
- uchar iptype;
- u32 res2;
- uchar res3[8];
- uchar ipuser[16];
- u32 res4;
- uchar ippollfg;
- uchar res5[3];
-} iucv_ConnectionSevered;
-
-typedef struct {
- u16 ippathid;
- uchar res1;
- uchar iptype;
- u32 res2;
- uchar res3[8];
- uchar ipuser[16];
- u32 res4;
- uchar ippollfg;
- uchar res5[3];
-} iucv_ConnectionQuiesced;
-
-typedef struct {
- u16 ippathid;
- uchar res1;
- uchar iptype;
- u32 res2;
- uchar res3[8];
- uchar ipuser[16];
- u32 res4;
- uchar ippollfg;
- uchar res5[3];
-} iucv_ConnectionResumed;
-
-typedef struct {
- u16 ippathid;
- uchar ipflags1;
- uchar iptype;
- u32 ipmsgid;
- u32 iptrgcls;
- union u2 {
- u32 iprmmsg1_u32;
- uchar iprmmsg1[4];
- } ln1msg1;
- union u1 {
- u32 ipbfln1f;
- uchar iprmmsg2[4];
- } ln1msg2;
- u32 res1[3];
- u32 ipbfln2f;
- uchar ippollfg;
- uchar res2[3];
-} iucv_MessagePending;
-
-typedef struct {
- u16 ippathid;
- uchar ipflags1;
- uchar iptype;
- u32 ipmsgid;
- u32 ipaudit;
- uchar iprmmsg[8];
- u32 ipsrccls;
- u32 ipmsgtag;
- u32 res;
- u32 ipbfln2f;
- uchar ippollfg;
- uchar res2[3];
-} iucv_MessageComplete;
-
-/*
- * iucv_interrupt_ops_t: Is a vector of functions that handle
- * IUCV interrupts.
- * Parameter list:
- * eib - is a pointer to a 40-byte area described
- * with one of the structures above.
- * pgm_data - this data is strictly for the
- * interrupt handler that is passed by
- * the application. This may be an address
- * or token.
-*/
-typedef struct {
- void (*ConnectionPending) (iucv_ConnectionPending * eib,
- void *pgm_data);
- void (*ConnectionComplete) (iucv_ConnectionComplete * eib,
- void *pgm_data);
- void (*ConnectionSevered) (iucv_ConnectionSevered * eib,
- void *pgm_data);
- void (*ConnectionQuiesced) (iucv_ConnectionQuiesced * eib,
- void *pgm_data);
- void (*ConnectionResumed) (iucv_ConnectionResumed * eib,
- void *pgm_data);
- void (*MessagePending) (iucv_MessagePending * eib, void *pgm_data);
- void (*MessageComplete) (iucv_MessageComplete * eib, void *pgm_data);
-} iucv_interrupt_ops_t;
-
-/*
- *iucv_array_t : Defines buffer array.
- * Inside the array may be 31- bit addresses and 31-bit lengths.
-*/
-typedef struct {
- u32 address;
- u32 length;
-} iucv_array_t __attribute__ ((aligned (8)));
-
-extern struct bus_type iucv_bus;
-extern struct device *iucv_root;
-
-/* -prototypes- */
-/*
- * Name: iucv_register_program
- * Purpose: Registers an application with IUCV
- * Input: prmname - user identification
- * userid - machine identification
- * pgmmask - indicates which bits in the prmname and userid combined will be
- * used to determine who is given control
- * ops - address of vector of interrupt handlers
- * pgm_data- application data passed to interrupt handlers
- * Output: NA
- * Return: address of handler
- * (0) - Error occurred, registration not completed.
- * NOTE: Exact cause of failure will be recorded in syslog.
-*/
-iucv_handle_t iucv_register_program (uchar pgmname[16],
- uchar userid[8],
- uchar pgmmask[24],
- iucv_interrupt_ops_t * ops,
- void *pgm_data);
-
-/*
- * Name: iucv_unregister_program
- * Purpose: Unregister application with IUCV
- * Input: address of handler
- * Output: NA
- * Return: (0) - Normal return
- * (-EINVAL) - Internal error, wild pointer
-*/
-int iucv_unregister_program (iucv_handle_t handle);
-
-/*
- * Name: iucv_accept
- * Purpose: This function is issued after the user receives a Connection Pending external
- * interrupt and now wishes to complete the IUCV communication path.
- * Input: pathid - u16 , Path identification number
- * msglim_reqstd - u16, The number of outstanding messages requested.
- * user_data - uchar[16], Data specified by the iucv_connect function.
- * flags1 - int, 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 - iucv_handle_t, Address of handler.
- * pgm_data - void *, Application data passed to interrupt handlers.
- * flags1_out - int * Contains information about the path
- * - IPPRTY - 0x20, Indicates you may send priority messages.
- * msglim - *u16, Number of outstanding messages.
- * Output: return code from CP IUCV call.
-*/
-
-int iucv_accept (u16 pathid,
- u16 msglim_reqstd,
- uchar user_data[16],
- int flags1,
- iucv_handle_t handle,
- void *pgm_data, int *flags1_out, u16 * msglim);
-
-/*
- * Name: iucv_connect
- * Purpose: 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.
- * Input: pathid - u16 *, Path identification number
- * msglim_reqstd - u16, Number of outstanding messages requested
- * user_data - uchar[16], 16-byte user data
- * userid - uchar[8], User identification
- * system_name - uchar[8], 8-byte identifying the system name
- * flags1 - int, 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.
- * -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 - int * Contains information about the path
- * - IPPRTY - 0x20, Indicates you may send priority messages.
- * msglim - * u16, Number of outstanding messages
- * handle - iucv_handle_t, Address of handler
- * pgm_data - void *, Application data passed to interrupt handlers
- * Output: return code from CP IUCV call
- * rc - return code from iucv_declare_buffer
- * -EINVAL - Invalid handle passed by application
- * -EINVAL - Pathid address is NULL
- * add_pathid_result - Return code from internal function add_pathid
-*/
-int
- iucv_connect (u16 * pathid,
- u16 msglim_reqstd,
- uchar user_data[16],
- uchar userid[8],
- uchar system_name[8],
- int flags1,
- int *flags1_out,
- u16 * msglim, iucv_handle_t handle, void *pgm_data);
-
-/*
- * Name: iucv_purge
- * Purpose: This function cancels a message that you have sent.
- * Input: pathid - Path identification number.
- * msgid - Specifies the message ID of the message to be purged.
- * srccls - Specifies the source message class.
- * Output: audit - Contains information about asynchronous error
- * that may have affected the normal completion
- * of this message.
- * Return: Return code from CP IUCV call.
-*/
-int iucv_purge (u16 pathid, u32 msgid, u32 srccls, __u32 *audit);
-/*
- * Name: iucv_query_maxconn
- * Purpose: This function determines the maximum number of communication paths you
- * may establish.
- * Return: maxconn - ulong, Maximum number of connection the virtual machine may
- * establish.
-*/
-ulong iucv_query_maxconn (void);
-
-/*
- * Name: iucv_query_bufsize
- * Purpose: This function determines how large an external interrupt
- * buffer IUCV requires to store information.
- * Return: bufsize - ulong, Size of external interrupt buffer.
- */
-ulong iucv_query_bufsize (void);
-
-/*
- * Name: iucv_quiesce
- * Purpose: This function temporarily suspends incoming messages on an
- * IUCV path. You can later reactivate the path by invoking
- * the iucv_resume function.
- * Input: pathid - Path identification number
- * user_data - 16-bytes of user data
- * Output: NA
- * Return: Return code from CP IUCV call.
-*/
-int iucv_quiesce (u16 pathid, uchar user_data[16]);
-
-/*
- * Name: iucv_receive
- * Purpose: This function receives messages that are being sent to you
- * over established paths. Data will be returned in buffer for length of
- * buflen.
- * Input:
- * pathid - Path identification number.
- * buffer - Address of buffer to receive.
- * buflen - Length of buffer to receive.
- * msgid - Specifies the message ID.
- * trgcls - Specifies target class.
- * Output:
- * flags1_out: int *, Contains information about this path.
- * IPNORPY - 0x10 Specifies this is a one-way message and no reply is
- * expected.
- * IPPRTY - 0x20 Specifies if you want to send priority message.
- * IPRMDATA - 0x80 specifies the data is contained in the parameter list
- * residual_buffer - address of buffer updated by the number
- * of bytes you have received.
- * 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: Return code from CP IUCV call.
- * (-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);
-
- /*
- * Name: iucv_receive_array
- * Purpose: This function receives messages that are being sent to you
- * over established paths. Data will be returned in first buffer for
- * length of first buffer.
- * Input: pathid - Path identification number.
- * msgid - specifies the message ID.
- * trgcls - Specifies target class.
- * buffer - Address of array of buffers.
- * buflen - Total length of buffers.
- * Output:
- * flags1_out: int *, Contains information about this path.
- * IPNORPY - 0x10 Specifies this is a one-way message and no reply is
- * expected.
- * 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: Return code from CP IUCV call.
- * (-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);
-
-/*
- * Name: iucv_reject
- * Purpose: The reject function 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.
- * Input: pathid - Path identification number.
- * msgid - Specifies the message ID.
- * trgcls - Specifies target class.
- * Output: NA
- * Return: Return code from CP IUCV call.
-*/
-int iucv_reject (u16 pathid, u32 msgid, u32 trgcls);
-
-/*
- * 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: residual_buffer - Address of buffer updated by the number
- * of bytes you have moved.
- * residual_length - 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: Return code from CP IUCV call.
- * (-EINVAL) - Buffer address is NULL.
-*/
-int iucv_reply (u16 pathid,
- u32 msgid,
- u32 trgcls,
- int flags1,
- void *buffer, ulong buflen, ulong * residual_buffer,
- ulong * residual_length);
-
-/*
- * 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- 0x20, Specifies if you want to send priority message.
- * buffer - Address of array of reply buffers.
- * buflen - Total length of reply buffers.
- * Output: residual_buffer - Address of buffer which IUCV is currently working on.
- * residual_length - 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: Return code from CP IUCV call.
- * (-EINVAL) - Buffer address is NULL.
-*/
-int iucv_reply_array (u16 pathid,
- u32 msgid,
- u32 trgcls,
- int flags1,
- iucv_array_t * buffer,
- ulong buflen, ulong * residual_address,
- ulong * residual_length);
-
-/*
- * 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- 0x20 Specifies if you want to send priority message.
- * prmmsg - 8-bytes of data to be placed into the parameter.
- * list.
- * Output: NA
- * Return: Return code from CP IUCV call.
-*/
-int iucv_reply_prmmsg (u16 pathid,
- u32 msgid, u32 trgcls, int flags1, uchar prmmsg[8]);
-
-/*
- * Name: iucv_resume
- * Purpose: This function restores communications over a quiesced path
- * Input: pathid - Path identification number.
- * user_data - 16-bytes of user data.
- * Output: NA
- * Return: Return code from CP IUCV call.
-*/
-int iucv_resume (u16 pathid, uchar user_data[16]);
-
-/*
- * Name: iucv_send
- * Purpose: This function transmits data to another application.
- * Data to be transmitted is in a buffer and 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- 0x20 Specifies if you want to send priority message.
- * buffer - Address of send buffer.
- * buflen - Length of send buffer.
- * Output: msgid - Specifies the message ID.
- * Return: Return code from CP IUCV call.
- * (-EINVAL) - Buffer address is NULL.
-*/
-int iucv_send (u16 pathid,
- u32 * msgid,
- u32 trgcls,
- u32 srccls, u32 msgtag, int flags1, void *buffer, ulong buflen);
-
-/*
- * 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: Return code from CP IUCV call.
- * (-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);
-
-/*
- * 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- 0x20 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: Return code from CP IUCV call.
-*/
-int iucv_send_prmmsg (u16 pathid,
- u32 * msgid,
- u32 trgcls,
- u32 srccls, u32 msgtag, int flags1, uchar prmmsg[8]);
-
-/*
- * 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- 0x20 Specifies if you want to send priority message.
- * buffer - Address of send buffer.
- * buflen - Length of send buffer.
- * ansbuf - Address of buffer into which IUCV moves the reply of
- * this message.
- * anslen - Address of length of buffer.
- * Output: msgid - Specifies the message ID.
- * Return: Return code from CP IUCV call.
- * (-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);
-
-/*
- * 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 - Specifies a tag to be associated with the message.
- * flags1 - Option for path.
- * IPPRTY- 0x20 Specifies if you want to send priority message.
- * buffer - Sddress of array of send buffers.
- * buflen - Total length of send buffers.
- * ansbuf - Address of array of buffer into which IUCV moves the reply
- * of this message.
- * anslen - Address of length reply buffers.
- * Output: msgid - Specifies the message ID.
- * Return: Return code from CP IUCV call.
- * (-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);
-
-/*
- * 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 - Rath 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- 0x20 Specifies if you want to send priority message.
- * prmmsg - 8-bytes of data to be placed in parameter list.
- * ansbuf - Address of buffer into which IUCV moves the reply of
- * this message.
- * anslen - Address of length of buffer.
- * Output: msgid - Specifies the message ID.
- * Return: Return code from CP IUCV call.
- * (-EINVAL) - Buffer address is NULL.
-*/
-int iucv_send2way_prmmsg (u16 pathid,
- u32 * msgid,
- u32 trgcls,
- u32 srccls,
- u32 msgtag,
- ulong flags1,
- uchar prmmsg[8], void *ansbuf, ulong anslen);
-
-/*
- * 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- 0x20 specifies if you want to send priority message.
- * prmmsg - 8-bytes of data to be placed into the parameter list.
- * ansbuf - Address of array of buffer into which IUCV moves the reply
- * of this message.
- * anslen - Address of length of reply buffers.
- * Output: msgid - Specifies the message ID.
- * Return: Return code from CP IUCV call.
- * (-EINVAL) - Ansbuf address is NULL.
-*/
-int iucv_send2way_prmmsg_array (u16 pathid,
- u32 * msgid,
- u32 trgcls,
- u32 srccls,
- u32 msgtag,
- int flags1,
- uchar prmmsg[8],
- iucv_array_t * ansbuf, ulong anslen);
-
-/*
- * 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: Return code from CP IUCV call.
-*/
-int iucv_setmask (int SetMaskFlag);
-
-/*
- * Name: iucv_sever
- * Purpose: This function terminates an IUCV path.
- * Input: pathid - Path identification number.
- * user_data - 16-bytes of user data.
- * Output: NA
- * Return: Return code from CP IUCV call.
- * (-EINVAL) - Interal error, wild pointer.
-*/
-int iucv_sever (u16 pathid, uchar user_data[16]);
projects / linux-2.6 / commitdiff