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kumquat-buildroot/package/fusion/linux-2.6.22.1-008-fusion.patch
Ulf Samuelsson dcab96b108 Add support for fusion linux module
2007-08-12 18:19:45 +00:00

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diff -urN linux-2.6.22.1-0rig/drivers/char/fusion/call.c linux-2.6.22.1/drivers/char/fusion/call.c
--- linux-2.6.22.1-0rig/drivers/char/fusion/call.c 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.22.1/drivers/char/fusion/call.c 2007-01-20 05:03:01.000000000 +0100
@@ -0,0 +1,478 @@
+/*
+ * Fusion Kernel Module
+ *
+ * (c) Copyright 2002-2003 Convergence GmbH
+ *
+ * Written by Denis Oliver Kropp <dok@directfb.org>
+ *
+ *
+ * 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 of the License, or (at your option) any later version.
+ */
+
+#ifdef HAVE_LINUX_CONFIG_H
+#include <linux/config.h>
+#endif
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/smp_lock.h>
+#include <linux/sched.h>
+
+#include <linux/fusion.h>
+
+#include "fusiondev.h"
+#include "fusionee.h"
+#include "list.h"
+#include "call.h"
+
+typedef struct {
+ FusionLink link;
+
+ Fusionee *caller;
+
+ int ret_val;
+
+ bool executed;
+
+ wait_queue_head_t wait;
+} FusionCallExecution;
+
+typedef struct {
+ FusionLink link;
+
+ struct semaphore lock;
+
+ int id; /* call id */
+
+ int pid; /* owner pid */
+ int fusion_id; /* owner fusion id */
+
+ void *handler;
+ void *ctx;
+
+ FusionLink *executions; /* prepending! */
+ FusionLink *last; /* points to the last item of executions */
+
+ int count; /* number of calls ever made */
+} FusionCall;
+
+/******************************************************************************/
+
+static int lookup_call (FusionDev *dev, int id, FusionCall **ret_call);
+static int lock_call (FusionDev *dev, int id, FusionCall **ret_call);
+static void unlock_call (FusionCall *call);
+
+static FusionCallExecution *add_execution (FusionCall *call,
+ Fusionee *caller,
+ FusionCallExecute *execute);
+static void remove_execution (FusionCall *call,
+ FusionCallExecution *execution);
+static void free_all_executions (FusionCall *call);
+
+/******************************************************************************/
+
+static int
+fusion_call_read_proc (char *buf, char **start, off_t offset,
+ int len, int *eof, void *private)
+{
+ FusionLink *l, *e;
+ FusionDev *dev = private;
+ int written = 0;
+
+ if (down_interruptible (&dev->call.lock))
+ return -EINTR;
+
+ fusion_list_foreach (l, dev->call.list) {
+ bool idle = true;
+ FusionCall *call = (FusionCall*) l;
+
+ if (call->executions)
+ idle = ((FusionCallExecution*) call->executions)->executed;
+
+ written += sprintf(buf+written,
+ "(%5d) 0x%08x (%d calls) %s",
+ call->pid, call->id, call->count,
+ idle ? "idle" : "executing");
+
+ fusion_list_foreach (e, call->executions) {
+ FusionCallExecution *exec = (FusionCallExecution *) e;
+
+ written += sprintf(buf+written, " [0x%08lx]", exec->caller ? fusionee_id( exec->caller ) : 0);
+ }
+
+ written += sprintf(buf+written, "\n");
+
+ if (written < offset) {
+ offset -= written;
+ written = 0;
+ }
+
+ if (written >= len)
+ break;
+ }
+
+ up (&dev->call.lock);
+
+ *start = buf + offset;
+ written -= offset;
+ if (written > len) {
+ *eof = 0;
+ return len;
+ }
+
+ *eof = 1;
+ return(written<0) ? 0 : written;
+}
+
+int
+fusion_call_init (FusionDev *dev)
+{
+ create_proc_read_entry("calls", 0, dev->proc_dir,
+ fusion_call_read_proc, dev);
+
+ init_MUTEX(&dev->call.lock);
+
+ return 0;
+}
+
+void
+fusion_call_deinit (FusionDev *dev)
+{
+ FusionLink *l;
+
+ down (&dev->call.lock);
+
+ remove_proc_entry ("calls", dev->proc_dir);
+
+ l = dev->call.list;
+ while (l) {
+ FusionLink *next = l->next;
+ FusionCall *call = (FusionCall *) l;
+
+ free_all_executions (call);
+
+ kfree (call);
+
+ l = next;
+ }
+
+ up (&dev->call.lock);
+}
+
+/******************************************************************************/
+
+int
+fusion_call_new (FusionDev *dev, int fusion_id, FusionCallNew *call_new)
+{
+ FusionCall *call;
+
+ call = kmalloc (sizeof(FusionCall), GFP_KERNEL);
+ if (!call)
+ return -ENOMEM;
+
+ memset (call, 0, sizeof(FusionCall));
+
+ if (down_interruptible (&dev->call.lock)) {
+ kfree (call);
+ return -EINTR;
+ }
+
+ call->id = dev->call.ids++;
+ call->pid = current->pid;
+ call->fusion_id = fusion_id;
+ call->handler = call_new->handler;
+ call->ctx = call_new->ctx;
+
+ init_MUTEX (&call->lock);
+
+ fusion_list_prepend (&dev->call.list, &call->link);
+
+ up (&dev->call.lock);
+
+ call_new->call_id = call->id;
+
+ return 0;
+}
+
+int
+fusion_call_execute (FusionDev *dev, Fusionee *fusionee, FusionCallExecute *execute)
+{
+ int ret;
+ FusionCall *call;
+ FusionCallExecution *execution;
+ FusionCallMessage message;
+
+ ret = lock_call (dev, execute->call_id, &call);
+ if (ret)
+ return ret;
+
+ execution = add_execution (call, fusionee, execute);
+ if (!execution) {
+ unlock_call (call);
+ return -ENOMEM;
+ }
+
+ /* Send call message. */
+ message.handler = call->handler;
+ message.ctx = call->ctx;
+
+ message.caller = fusionee ? fusionee_id( fusionee ) : 0;
+
+ message.call_arg = execute->call_arg;
+ message.call_ptr = execute->call_ptr;
+
+ ret = fusionee_send_message (dev, fusionee, call->fusion_id, FMT_CALL,
+ call->id, sizeof(message), &message);
+ if (ret) {
+ remove_execution (call, execution);
+ kfree (execution);
+ unlock_call (call);
+ return ret;
+ }
+
+ call->count++;
+
+ if (fusionee && !(execute->flags & FCEF_ONEWAY)) {
+ /* TODO: implement timeout */
+ fusion_sleep_on (&execution->wait, &call->lock, 0);
+
+ ret = lock_call (dev, execute->call_id, &call);
+ if (ret)
+ return ret == -EINVAL ? -EIDRM : ret;
+
+ if (signal_pending(current)) {
+ execution->caller = 0;
+ unlock_call (call);
+ return -EINTR;
+ }
+
+ execute->ret_val = execution->ret_val;
+
+ remove_execution (call, execution);
+
+ kfree (execution);
+ }
+
+ unlock_call (call);
+
+ return 0;
+}
+
+int
+fusion_call_return (FusionDev *dev, int fusion_id, FusionCallReturn *call_ret)
+{
+ int ret;
+ FusionLink *l;
+ FusionCall *call;
+
+ ret = lock_call (dev, call_ret->call_id, &call);
+ if (ret)
+ return ret;
+
+ l = call->last;
+ while (l) {
+ FusionCallExecution *execution = (FusionCallExecution*) l;
+
+ if (execution->executed) {
+ l = l->prev;
+ continue;
+ }
+
+ if (execution->caller) {
+ execution->ret_val = call_ret->val;
+ execution->executed = true;
+
+ wake_up_interruptible_all (&execution->wait);
+ }
+ else {
+ remove_execution (call, execution);
+
+ kfree (execution);
+ }
+
+ unlock_call (call);
+
+ return 0;
+ }
+
+ unlock_call (call);
+
+ return -EIO;
+}
+
+int
+fusion_call_destroy (FusionDev *dev, int fusion_id, int call_id)
+{
+ int ret;
+ FusionCall *call;
+
+ ret = lookup_call (dev, call_id, &call);
+ if (ret)
+ return ret;
+
+ if (call->fusion_id != fusion_id) {
+ up (&dev->call.lock);
+ return -EIO;
+ }
+
+ if (down_interruptible (&call->lock)) {
+ up (&dev->call.lock);
+ return -EINTR;
+ }
+
+ fusion_list_remove (&dev->call.list, &call->link);
+
+ free_all_executions (call);
+
+ up (&dev->call.lock);
+
+ up (&call->lock);
+
+ kfree (call);
+
+ return 0;
+}
+
+void
+fusion_call_destroy_all (FusionDev *dev, int fusion_id)
+{
+ FusionLink *l;
+
+ down (&dev->call.lock);
+
+ l = dev->call.list;
+
+ while (l) {
+ FusionLink *next = l->next;
+ FusionCall *call = (FusionCall *) l;
+
+ down (&call->lock);
+
+ if (call->fusion_id == fusion_id) {
+ free_all_executions (call);
+
+ fusion_list_remove (&dev->call.list, &call->link);
+
+ up (&call->lock);
+
+ kfree (call);
+ }
+ else
+ up (&call->lock);
+
+ l = next;
+ }
+
+ up (&dev->call.lock);
+}
+
+/******************************************************************************/
+
+static int
+lookup_call (FusionDev *dev, int id, FusionCall **ret_call)
+{
+ FusionLink *l;
+
+ if (down_interruptible (&dev->call.lock))
+ return -EINTR;
+
+ fusion_list_foreach (l, dev->call.list) {
+ FusionCall *call = (FusionCall *) l;
+
+ if (call->id == id) {
+ *ret_call = call;
+ return 0;
+ }
+ }
+
+ up (&dev->call.lock);
+
+ return -EINVAL;
+}
+
+static int
+lock_call (FusionDev *dev, int id, FusionCall **ret_call)
+{
+ int ret;
+ FusionCall *call;
+
+ ret = lookup_call (dev, id, &call);
+ if (ret)
+ return ret;
+
+ if (call) {
+ fusion_list_move_to_front (&dev->call.list, &call->link);
+
+ if (down_interruptible (&call->lock)) {
+ up (&dev->call.lock);
+ return -EINTR;
+ }
+
+ up (&dev->call.lock);
+ }
+
+ *ret_call = call;
+
+ return 0;
+}
+
+static void
+unlock_call (FusionCall *call)
+{
+ up (&call->lock);
+}
+
+static FusionCallExecution *
+add_execution (FusionCall *call,
+ Fusionee *caller,
+ FusionCallExecute *execute)
+{
+ FusionCallExecution *execution;
+
+ /* Allocate execution. */
+ execution = kmalloc (sizeof(FusionCallExecution), GFP_KERNEL);
+ if (!execution)
+ return NULL;
+
+ /* Initialize execution. */
+ memset (execution, 0, sizeof(FusionCallExecution));
+
+ execution->caller = caller;
+
+ init_waitqueue_head (&execution->wait);
+
+ /* Add execution. */
+ fusion_list_prepend (&call->executions, &execution->link);
+
+ if (!call->last)
+ call->last = &execution->link;
+
+ return execution;
+}
+
+static void
+remove_execution (FusionCall *call,
+ FusionCallExecution *execution)
+{
+ if (call->last == &execution->link)
+ call->last = execution->link.prev;
+
+ fusion_list_remove (&call->executions, &execution->link);
+}
+
+static void
+free_all_executions (FusionCall *call)
+{
+ while (call->last) {
+ FusionCallExecution *execution = (FusionCallExecution *) call->last;
+
+ remove_execution (call, execution);
+
+ wake_up_interruptible_all (&execution->wait);
+
+ kfree (execution);
+ }
+}
diff -urN linux-2.6.22.1-0rig/drivers/char/fusion/call.h linux-2.6.22.1/drivers/char/fusion/call.h
--- linux-2.6.22.1-0rig/drivers/char/fusion/call.h 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.22.1/drivers/char/fusion/call.h 2007-01-20 05:03:01.000000000 +0100
@@ -0,0 +1,52 @@
+/*
+ * Fusion Kernel Module
+ *
+ * (c) Copyright 2002-2003 Convergence GmbH
+ *
+ * Written by Denis Oliver Kropp <dok@directfb.org>
+ *
+ *
+ * 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 of the License, or (at your option) any later version.
+ */
+
+#ifndef __FUSION__CALL_H__
+#define __FUSION__CALL_H__
+
+#include <linux/fusion.h>
+
+#include "fusiondev.h"
+
+/* module init/cleanup */
+
+int fusion_call_init (FusionDev *dev);
+void fusion_call_deinit (FusionDev *dev);
+
+
+/* public API */
+
+int fusion_call_new (FusionDev *dev,
+ int fusion_id,
+ FusionCallNew *call);
+
+int fusion_call_execute (FusionDev *dev,
+ Fusionee *fusionee, /* NULL if call is from kernel */
+ FusionCallExecute *execute);
+
+int fusion_call_return (FusionDev *dev,
+ int fusion_id,
+ FusionCallReturn *call_ret);
+
+int fusion_call_destroy (FusionDev *dev,
+ int fusion_id,
+ int call_id);
+
+
+/* internal functions */
+
+void fusion_call_destroy_all (FusionDev *dev,
+ int fusion_id);
+
+#endif
diff -urN linux-2.6.22.1-0rig/drivers/char/fusion/.cvsignore linux-2.6.22.1/drivers/char/fusion/.cvsignore
--- linux-2.6.22.1-0rig/drivers/char/fusion/.cvsignore 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.22.1/drivers/char/fusion/.cvsignore 2005-10-29 07:11:10.000000000 +0200
@@ -0,0 +1,6 @@
+*.o.flags
+*.cmd
+Makefile
+fusion.ko
+fusion.mod.c
+.tmp_versions
diff -urN linux-2.6.22.1-0rig/drivers/char/fusion/entries.c linux-2.6.22.1/drivers/char/fusion/entries.c
--- linux-2.6.22.1-0rig/drivers/char/fusion/entries.c 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.22.1/drivers/char/fusion/entries.c 2007-03-08 14:02:04.000000000 +0100
@@ -0,0 +1,438 @@
+/*
+ * Fusion Kernel Module
+ *
+ * (c) Copyright 2002-2003 Convergence GmbH
+ *
+ * Written by Denis Oliver Kropp <dok@directfb.org>
+ *
+ *
+ * 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 of the License, or (at your option) any later version.
+ */
+
+#ifdef HAVE_LINUX_CONFIG_H
+#include <linux/config.h>
+#endif
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/smp_lock.h>
+#include <linux/sched.h>
+#include <linux/time.h>
+#include <linux/version.h>
+
+#include <linux/fusion.h>
+
+#include "fusiondev.h"
+#include "entries.h"
+
+
+void
+fusion_entries_init( FusionEntries *entries,
+ FusionEntryClass *class,
+ void *ctx )
+{
+ FUSION_ASSERT( entries != NULL );
+ FUSION_ASSERT( class != NULL );
+ FUSION_ASSERT( class->object_size >= sizeof(FusionEntry) );
+
+ memset( entries, 0, sizeof(FusionEntries) );
+
+ entries->class = class;
+ entries->ctx = ctx;
+
+ init_MUTEX( &entries->lock );
+}
+
+void
+fusion_entries_deinit( FusionEntries *entries )
+{
+ FusionLink *tmp;
+ FusionEntry *entry;
+ FusionEntryClass *class;
+
+ FUSION_ASSERT( entries != NULL );
+ FUSION_ASSERT( entries->class != NULL );
+
+ class = entries->class;
+
+ down( &entries->lock );
+
+ fusion_list_foreach_safe (entry, tmp, entries->list) {
+ if (class->Destroy)
+ class->Destroy( entry, entries->ctx );
+
+ kfree( entry );
+ }
+
+ up( &entries->lock );
+}
+
+int
+fusion_entries_read_proc(char *buf, char **start, off_t offset,
+ int len, int *eof, void *private)
+{
+ FusionEntry *entry;
+ FusionEntryClass *class;
+ FusionEntries *entries = private;
+ int written = 0;
+ struct timeval now;
+
+ FUSION_ASSERT( entries != NULL );
+ FUSION_ASSERT( entries->class != NULL );
+
+ class = entries->class;
+
+ if (!class->Print)
+ return -ENOTSUPP;
+
+ if (down_interruptible (&entries->lock))
+ return -EINTR;
+
+ do_gettimeofday( &now );
+
+ fusion_list_foreach (entry, entries->list) {
+ if (entry->last_lock.tv_sec) {
+ int diff = ((now.tv_sec - entry->last_lock.tv_sec) * 1000 +
+ (now.tv_usec - entry->last_lock.tv_usec) / 1000);
+
+ if (diff < 1000) {
+ written += sprintf( buf + written, "%3d ms ", diff );
+ }
+ else if (diff < 1000000) {
+ written += sprintf( buf + written, "%3d.%d s ",
+ diff / 1000, (diff % 1000) / 100 );
+ }
+ else {
+ diff = ( now.tv_sec - entry->last_lock.tv_sec +
+ (now.tv_usec - entry->last_lock.tv_usec) / 1000000);
+
+ written += sprintf( buf + written, "%3d.%d h ",
+ diff / 3600, (diff % 3600) / 360 );
+ }
+ }
+ else
+ written += sprintf( buf + written, " -.- " );
+
+
+ written += sprintf( buf + written, "(%5d) 0x%08x ", entry->pid, entry->id );
+
+ written += sprintf( buf + written, "%-24s ", entry->name[0] ? entry->name : "" );
+
+ written += class->Print( entry, entries->ctx, buf + written );
+
+ if (written < offset) {
+ offset -= written;
+ written = 0;
+ }
+
+ if (written >= len)
+ break;
+ }
+
+ up (&entries->lock);
+
+ *start = buf + offset;
+ written -= offset;
+ if (written > len) {
+ *eof = 0;
+ return len;
+ }
+
+ *eof = 1;
+
+ return (written<0) ? 0 : written;
+}
+
+int
+fusion_entry_create( FusionEntries *entries,
+ int *ret_id,
+ void *create_ctx )
+{
+ int ret;
+ FusionEntry *entry;
+ FusionEntryClass *class;
+
+ FUSION_ASSERT( entries != NULL );
+ FUSION_ASSERT( entries->class != NULL );
+ FUSION_ASSERT( ret_id != NULL );
+
+ class = entries->class;
+
+ entry = kmalloc( class->object_size, GFP_KERNEL );
+ if (!entry)
+ return -ENOMEM;
+
+ memset( entry, 0, class->object_size );
+
+ if (down_interruptible( &entries->lock )) {
+ kfree( entry );
+ return -EINTR;
+ }
+
+ entry->entries = entries;
+ entry->id = entries->ids++;
+ entry->pid = current->pid;
+
+ init_MUTEX( &entry->lock );
+
+ init_waitqueue_head( &entry->wait );
+
+ if (class->Init) {
+ ret = class->Init( entry, entries->ctx, create_ctx );
+ if (ret) {
+ up( &entries->lock );
+ kfree( entry );
+ return ret;
+ }
+ }
+
+ fusion_list_prepend( &entries->list, &entry->link );
+
+ up( &entries->lock );
+
+ *ret_id = entry->id;
+
+ return 0;
+}
+
+int
+fusion_entry_destroy( FusionEntries *entries,
+ int id )
+{
+ FusionEntry *entry;
+ FusionEntryClass *class;
+
+ FUSION_ASSERT( entries != NULL );
+ FUSION_ASSERT( entries->class != NULL );
+
+ class = entries->class;
+
+ /* Lock entries. */
+ if (down_interruptible( &entries->lock ))
+ return -EINTR;
+
+ /* Lookup the entry. */
+ fusion_list_foreach (entry, entries->list) {
+ if (entry->id == id)
+ break;
+ }
+
+ /* Check if no entry was found. */
+ if (!entry) {
+ up( &entries->lock );
+ return -EINVAL;
+ }
+
+ /* Lock the entry. */
+ if (down_interruptible( &entry->lock )) {
+ up( &entries->lock );
+ return -EINTR;
+ }
+
+ /* Destroy it now. */
+ fusion_entry_destroy_locked( entries, entry );
+
+ /* Unlock entries. */
+ up( &entries->lock );
+
+ return 0;
+}
+
+void
+fusion_entry_destroy_locked( FusionEntries *entries,
+ FusionEntry *entry )
+{
+ FusionEntryClass *class;
+
+ FUSION_ASSERT( entries != NULL );
+ FUSION_ASSERT( entries->class != NULL );
+
+ class = entries->class;
+
+ /* Remove the entry from the list. */
+ fusion_list_remove( &entries->list, &entry->link );
+
+ /* Wake up any waiting process. */
+ wake_up_interruptible_all( &entry->wait );
+
+ /* Call the destroy function. */
+ if (class->Destroy)
+ class->Destroy( entry, entries->ctx );
+
+ /* Unlock the entry. */
+ up( &entry->lock );
+
+ /* Deallocate the entry. */
+ kfree( entry );
+}
+
+int
+fusion_entry_set_info( FusionEntries *entries,
+ const FusionEntryInfo *info )
+{
+ int ret;
+ FusionEntry *entry;
+
+ FUSION_ASSERT( entries != NULL );
+ FUSION_ASSERT( info != NULL );
+
+ ret = fusion_entry_lock( entries, info->id, false, &entry );
+ if (ret)
+ return ret;
+
+ snprintf( entry->name, FUSION_ENTRY_INFO_NAME_LENGTH, info->name );
+
+ fusion_entry_unlock( entry );
+
+ return 0;
+}
+
+int
+fusion_entry_get_info( FusionEntries *entries,
+ FusionEntryInfo *info )
+{
+ int ret;
+ FusionEntry *entry;
+
+ FUSION_ASSERT( entries != NULL );
+ FUSION_ASSERT( info != NULL );
+
+ ret = fusion_entry_lock( entries, info->id, false, &entry );
+ if (ret)
+ return ret;
+
+ snprintf( info->name, FUSION_ENTRY_INFO_NAME_LENGTH, entry->name );
+
+ fusion_entry_unlock( entry );
+
+ return 0;
+}
+
+int
+fusion_entry_lock( FusionEntries *entries,
+ int id,
+ bool keep_entries_lock,
+ FusionEntry **ret_entry )
+{
+ FusionEntry *entry;
+
+ FUSION_ASSERT( entries != NULL );
+ FUSION_ASSERT( ret_entry != NULL );
+
+ /* Lock entries. */
+ if (down_interruptible( &entries->lock ))
+ return -EINTR;
+
+ /* Lookup the entry. */
+ fusion_list_foreach (entry, entries->list) {
+ if (entry->id == id)
+ break;
+ }
+
+ /* Check if no entry was found. */
+ if (!entry) {
+ up( &entries->lock );
+ return -EINVAL;
+ }
+
+ FUSION_ASSUME( entry->lock_pid != current->pid );
+
+ /* Move the entry to the front of all entries. */
+ fusion_list_move_to_front( &entries->list, &entry->link );
+
+ /* Lock the entry. */
+ if (down_interruptible( &entry->lock )) {
+ up( &entries->lock );
+ return -EINTR;
+ }
+
+ /* Mark as locked. */
+ entry->lock_pid = current->pid;
+
+ /* Keep timestamp, but use the slightly
+ inexact version to avoid performance impacts. */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0) && defined _STRUCT_TIMESPEC
+ entry->last_lock.tv_sec = xtime.tv_sec;
+ entry->last_lock.tv_usec = xtime.tv_nsec / 1000;
+#else
+ entry->last_lock = xtime;
+#endif
+
+ /* Unlock entries. */
+ if (!keep_entries_lock)
+ up( &entries->lock );
+
+ /* Return the locked entry. */
+ *ret_entry = entry;
+
+ return 0;
+}
+
+void
+fusion_entry_unlock( FusionEntry *entry )
+{
+ FUSION_ASSERT( entry != NULL );
+ FUSION_ASSUME( entry->lock_pid == current->pid );
+
+ entry->lock_pid = 0;
+
+ /* Unlock the entry. */
+ up( &entry->lock );
+}
+
+int
+fusion_entry_wait( FusionEntry *entry, long *timeout )
+{
+ int ret;
+ int id;
+ FusionEntries *entries;
+ FusionEntry *entry2;
+
+ FUSION_ASSERT( entry != NULL );
+ FUSION_ASSERT( entry->entries != NULL );
+ FUSION_ASSUME( entry->lock_pid == current->pid );
+
+ id = entry->id;
+ entries = entry->entries;
+
+ entry->waiters++;
+
+ entry->lock_pid = 0;
+ fusion_sleep_on( &entry->wait, &entry->lock, timeout );
+
+ entry->waiters--;
+
+ if (signal_pending(current))
+ return -EINTR;
+
+ if (timeout && !*timeout)
+ return -ETIMEDOUT;
+
+ ret = fusion_entry_lock( entries, id, false, &entry2 );
+ switch (ret) {
+ case -EINVAL:
+ return -EIDRM;
+
+ case 0:
+ if (entry != entry2)
+ BUG();
+ }
+
+ return ret;
+}
+
+void
+fusion_entry_notify( FusionEntry *entry, bool all )
+{
+ FUSION_ASSERT( entry != NULL );
+ FUSION_ASSUME( entry->lock_pid == current->pid );
+
+ if (all)
+ wake_up_interruptible_all( &entry->wait );
+ else
+ wake_up_interruptible( &entry->wait );
+}
+
diff -urN linux-2.6.22.1-0rig/drivers/char/fusion/entries.h linux-2.6.22.1/drivers/char/fusion/entries.h
--- linux-2.6.22.1-0rig/drivers/char/fusion/entries.h 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.22.1/drivers/char/fusion/entries.h 2006-09-03 13:50:55.000000000 +0200
@@ -0,0 +1,179 @@
+/*
+ * Fusion Kernel Module
+ *
+ * (c) Copyright 2002-2003 Convergence GmbH
+ *
+ * Written by Denis Oliver Kropp <dok@directfb.org>
+ *
+ *
+ * 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 of the License, or (at your option) any later version.
+ */
+
+#ifndef __FUSION__ENTRIES_H__
+#define __FUSION__ENTRIES_H__
+
+#include "types.h"
+#include "list.h"
+
+
+typedef struct __FD_FusionEntry FusionEntry;
+
+
+typedef const struct {
+ int object_size;
+
+ int (*Init) ( FusionEntry *entry, void *ctx, void *create_ctx );
+ void (*Destroy)( FusionEntry *entry, void *ctx );
+ int (*Print) ( FusionEntry *entry, void *ctx, char *buf );
+} FusionEntryClass;
+
+
+typedef struct {
+ FusionEntryClass *class;
+ void *ctx;
+
+ FusionLink *list;
+ int ids;
+ struct semaphore lock;
+} FusionEntries;
+
+
+struct __FD_FusionEntry {
+ FusionLink link;
+
+ FusionEntries *entries;
+
+ int id;
+ pid_t pid;
+
+ pid_t lock_pid;
+
+ struct semaphore lock;
+ wait_queue_head_t wait;
+ int waiters;
+
+ struct timeval last_lock;
+
+ char name[FUSION_ENTRY_INFO_NAME_LENGTH];
+};
+
+
+/* Entries Init & DeInit */
+
+void fusion_entries_init ( FusionEntries *entries,
+ FusionEntryClass *class,
+ void *ctx );
+
+void fusion_entries_deinit( FusionEntries *entries );
+
+
+/* '/proc' support */
+
+int fusion_entries_read_proc( char *buf, char **start, off_t offset,
+ int len, int *eof, void *private );
+
+
+/* Create & Destroy */
+
+int fusion_entry_create ( FusionEntries *entries,
+ int *ret_id,
+ void *create_ctx );
+
+int fusion_entry_destroy ( FusionEntries *entries,
+ int id );
+
+void fusion_entry_destroy_locked( FusionEntries *entries,
+ FusionEntry *entry );
+
+/* Information */
+
+int fusion_entry_set_info( FusionEntries *entries,
+ const FusionEntryInfo *info );
+
+int fusion_entry_get_info( FusionEntries *entries,
+ FusionEntryInfo *info );
+
+
+/* Lock & Unlock */
+
+int fusion_entry_lock ( FusionEntries *entries,
+ int id,
+ bool keep_entries_lock,
+ FusionEntry **ret_entry );
+
+void fusion_entry_unlock ( FusionEntry *entry );
+
+
+/** Wait & Notify **/
+
+/*
+ * Wait for the entry to be notified with an optional timeout.
+ *
+ * The entry
+ * (1) has to be locked prior to calling this function.
+ * (2) is temporarily unlocked while being waited for.
+ *
+ * If this function returns an error, the entry is not locked again!
+ *
+ * Possible errors are:
+ * -EIDRM Entry has been removed while being waited for.
+ * -ETIMEDOUT Timeout occured.
+ * -EINTR A signal has been received.
+ */
+int fusion_entry_wait ( FusionEntry *entry,
+ long *timeout );
+
+/*
+ * Wake up one or all processes waiting for the entry to be notified.
+ *
+ * The entry has to be locked prior to calling this function.
+ */
+void fusion_entry_notify ( FusionEntry *entry,
+ bool all );
+
+
+#define FUSION_ENTRY_CLASS( Type, name, init_func, destroy_func, print_func ) \
+ \
+ static FusionEntryClass name##_class = { \
+ .object_size = sizeof(Type), \
+ .Init = init_func, \
+ .Destroy = destroy_func, \
+ .Print = print_func \
+ }; \
+ \
+ static inline int fusion_##name##_lock( FusionEntries *entries, \
+ int id, \
+ bool keep, \
+ Type **ret_##name ) \
+ { \
+ int ret; \
+ FusionEntry *entry; \
+ \
+ ret = fusion_entry_lock( entries, id, keep, &entry ); \
+ \
+ if (!ret) \
+ *ret_##name = (Type *) entry; \
+ \
+ return ret; \
+ } \
+ \
+ static inline void fusion_##name##_unlock( Type *name ) \
+ { \
+ fusion_entry_unlock( (FusionEntry*) name ); \
+ } \
+ \
+ static inline int fusion_##name##_wait( Type *name, long *timeout ) \
+ { \
+ return fusion_entry_wait( (FusionEntry*) name, timeout ); \
+ } \
+ \
+ static inline void fusion_##name##_notify( Type *name, bool all ) \
+ { \
+ fusion_entry_notify( (FusionEntry*) name, all ); \
+ }
+
+
+#endif
diff -urN linux-2.6.22.1-0rig/drivers/char/fusion/fifo.c linux-2.6.22.1/drivers/char/fusion/fifo.c
--- linux-2.6.22.1-0rig/drivers/char/fusion/fifo.c 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.22.1/drivers/char/fusion/fifo.c 2003-06-16 19:47:03.000000000 +0200
@@ -0,0 +1,53 @@
+/*
+ * Fusion Kernel Module
+ *
+ * (c) Copyright 2002-2003 Convergence GmbH
+ *
+ * Written by Denis Oliver Kropp <dok@directfb.org>
+ *
+ *
+ * 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 of the License, or (at your option) any later version.
+ */
+
+#include <linux/types.h>
+
+#include "fifo.h"
+
+void
+fusion_fifo_put (FusionFifo *fifo, FusionLink *link)
+{
+ link->prev = fifo->last;
+ link->next = NULL;
+
+ if (fifo->last)
+ fifo->last->next = link;
+ else
+ fifo->first = link;
+
+ fifo->last = link;
+
+ fifo->count++;
+}
+
+FusionLink *
+fusion_fifo_get (FusionFifo *fifo)
+{
+ FusionLink *first = fifo->first;
+
+ if (!first)
+ return NULL;
+
+ fifo->first = first->next;
+
+ if (fifo->last == first)
+ fifo->last = NULL;
+ else
+ fifo->first->prev = NULL;
+
+ fifo->count--;
+
+ return first;
+}
diff -urN linux-2.6.22.1-0rig/drivers/char/fusion/fifo.h linux-2.6.22.1/drivers/char/fusion/fifo.h
--- linux-2.6.22.1-0rig/drivers/char/fusion/fifo.h 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.22.1/drivers/char/fusion/fifo.h 2003-06-16 19:47:03.000000000 +0200
@@ -0,0 +1,36 @@
+/*
+ * Fusion Kernel Module
+ *
+ * (c) Copyright 2002-2003 Convergence GmbH
+ *
+ * Written by Denis Oliver Kropp <dok@directfb.org>
+ *
+ *
+ * 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 of the License, or (at your option) any later version.
+ */
+
+#ifndef __FUSION__FIFO_H__
+#define __FUSION__FIFO_H__
+
+#include "types.h"
+#include "list.h"
+
+typedef struct {
+ FusionLink *first;
+ FusionLink *last;
+
+ int count;
+} FusionFifo;
+
+void fusion_fifo_put (FusionFifo *fifo,
+ FusionLink *link);
+
+FusionLink *fusion_fifo_get (FusionFifo *fifo);
+
+int fusion_fifo_count (FusionFifo *fifo);
+
+#endif /* __FUSION__LIST_H__ */
+
diff -urN linux-2.6.22.1-0rig/drivers/char/fusion/fusiondev.c linux-2.6.22.1/drivers/char/fusion/fusiondev.c
--- linux-2.6.22.1-0rig/drivers/char/fusion/fusiondev.c 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.22.1/drivers/char/fusion/fusiondev.c 2007-03-08 14:02:47.000000000 +0100
@@ -0,0 +1,1187 @@
+/*
+ * Fusion Kernel Module
+ *
+ * (c) Copyright 2002-2003 Convergence GmbH
+ *
+ * Written by Denis Oliver Kropp <dok@directfb.org>
+ *
+ *
+ * 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 of the License, or (at your option) any later version.
+ */
+
+#include <linux/version.h>
+#include <linux/module.h>
+#ifdef HAVE_LINUX_CONFIG_H
+#include <linux/config.h>
+#endif
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/fs.h>
+#include <linux/slab.h>
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 18)
+#include <linux/devfs_fs_kernel.h>
+#endif
+#if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 19)
+#include <linux/page-flags.h>
+#include <linux/mm.h>
+#endif
+
+#include <linux/proc_fs.h>
+#include <linux/poll.h>
+#include <linux/init.h>
+#include <asm/io.h>
+#include <asm/uaccess.h>
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 2)
+#include <linux/device.h>
+#endif
+
+#include <linux/fusion.h>
+
+#include "call.h"
+#include "fusiondev.h"
+#include "fusionee.h"
+#include "property.h"
+#include "reactor.h"
+#include "ref.h"
+#include "skirmish.h"
+#include "shmpool.h"
+
+#if 0
+#define DEBUG(x...) printk (KERN_DEBUG "Fusion: " x)
+#else
+#define DEBUG(x...) do {} while (0)
+#endif
+
+#ifndef FUSION_MAJOR
+#define FUSION_MAJOR 252
+#endif
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Denis Oliver Kropp <dok@directfb.org>");
+
+struct proc_dir_entry *proc_fusion_dir;
+
+#define NUM_MINORS 8
+
+static FusionDev *fusion_devs[NUM_MINORS] = { 0 };
+static DECLARE_MUTEX(devs_lock);
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 0)
+static devfs_handle_t devfs_handles[NUM_MINORS];
+static inline unsigned iminor(struct inode *inode)
+{
+ return MINOR(inode->i_rdev);
+}
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 2)
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 13)
+static struct class *fusion_class;
+#else
+static struct class_simple *fusion_class;
+#endif
+#endif
+
+/******************************************************************************/
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0)
+void
+fusion_sleep_on(wait_queue_head_t *q, struct semaphore *lock, signed long *timeout)
+{
+ DEFINE_WAIT(wait);
+
+ prepare_to_wait( q, &wait, TASK_INTERRUPTIBLE );
+
+ up( lock );
+
+ if (timeout)
+ *timeout = schedule_timeout(*timeout);
+ else
+ schedule();
+
+ finish_wait( q, &wait );
+}
+#else
+void
+fusion_sleep_on(wait_queue_head_t *q, struct semaphore *lock, signed long *timeout)
+{
+ wait_queue_t wait;
+
+ init_waitqueue_entry (&wait, current);
+
+ current->state = TASK_INTERRUPTIBLE;
+
+ write_lock (&q->lock);
+ __add_wait_queue (q, &wait);
+ write_unlock (&q->lock);
+
+ up (lock);
+
+ if (timeout)
+ *timeout = schedule_timeout(*timeout);
+ else
+ schedule();
+
+ write_lock (&q->lock);
+ __remove_wait_queue (q, &wait);
+ write_unlock (&q->lock);
+}
+#endif
+
+/******************************************************************************/
+
+static int
+fusiondev_stat_read_proc(char *buf, char **start, off_t offset,
+ int len, int *eof, void *private)
+{
+ FusionDev *dev = private;
+ int written = 0;
+
+ written += snprintf( buf, len,
+ "lease/purchase cede attach detach "
+ "ref up ref down prevail/swoop dismiss\n" );
+ if (written < offset) {
+ offset -= written;
+ written = 0;
+ }
+
+ if (written < len) {
+ written += snprintf( buf+written, len - written,
+ "%10d %10d %10d %10d %10d %10d %10d %10d\n",
+ dev->stat.property_lease_purchase,
+ dev->stat.property_cede,
+ dev->stat.reactor_attach,
+ dev->stat.reactor_detach,
+ dev->stat.ref_up,
+ dev->stat.ref_down,
+ dev->stat.skirmish_prevail_swoop,
+ dev->stat.skirmish_dismiss );
+ if (written < offset) {
+ offset -= written;
+ written = 0;
+ }
+ }
+
+ *start = buf + offset;
+ written -= offset;
+ if (written > len) {
+ *eof = 0;
+ return len;
+ }
+
+ *eof = 1;
+ return(written<0) ? 0 : written;
+}
+
+/******************************************************************************/
+
+static int
+fusiondev_init (FusionDev *dev)
+{
+ int ret;
+
+ init_MUTEX( &dev->enter_lock );
+ init_waitqueue_head( &dev->enter_wait );
+
+ ret = fusionee_init (dev);
+ if (ret)
+ goto error_fusionee;
+
+ ret = fusion_ref_init (dev);
+ if (ret)
+ goto error_ref;
+
+ ret = fusion_skirmish_init (dev);
+ if (ret)
+ goto error_skirmish;
+
+ ret = fusion_property_init (dev);
+ if (ret)
+ goto error_property;
+
+ ret = fusion_reactor_init (dev);
+ if (ret)
+ goto error_reactor;
+
+ ret = fusion_shmpool_init (dev);
+ if (ret)
+ goto error_shmpool;
+
+ ret = fusion_call_init (dev);
+ if (ret)
+ goto error_call;
+
+ create_proc_read_entry( "stat", 0, dev->proc_dir,
+ fusiondev_stat_read_proc, dev );
+
+ return 0;
+
+
+error_call:
+ fusion_shmpool_deinit (dev);
+
+error_shmpool:
+ fusion_reactor_deinit (dev);
+
+error_reactor:
+ fusion_property_deinit (dev);
+
+error_property:
+ fusion_skirmish_deinit (dev);
+
+error_skirmish:
+ fusion_ref_deinit (dev);
+
+error_ref:
+ fusionee_deinit (dev);
+
+error_fusionee:
+ return ret;
+}
+
+static void
+fusiondev_deinit (FusionDev *dev)
+{
+ remove_proc_entry ("stat", dev->proc_dir);
+
+ fusion_call_deinit (dev);
+ fusion_shmpool_deinit (dev);
+ fusion_reactor_deinit (dev);
+ fusion_property_deinit (dev);
+ fusion_skirmish_deinit (dev);
+ fusion_ref_deinit (dev);
+ fusionee_deinit (dev);
+
+ if (dev->shared_area) {
+ ClearPageReserved( virt_to_page(dev->shared_area) );
+ free_page( dev->shared_area );
+ }
+}
+
+/******************************************************************************/
+
+static int
+fusion_open (struct inode *inode, struct file *file)
+{
+ int ret;
+ Fusionee *fusionee;
+ int minor = iminor(inode);
+
+ DEBUG( "fusion_open( %p, %d )\n", file, atomic_read(&file->f_count) );
+
+ if (down_interruptible (&devs_lock))
+ return -EINTR;
+
+ if (!fusion_devs[minor]) {
+ char buf[4];
+
+ fusion_devs[minor] = kmalloc (sizeof(FusionDev), GFP_KERNEL);
+ if (!fusion_devs[minor]) {
+ up (&devs_lock);
+ return -ENOMEM;
+ }
+
+ memset (fusion_devs[minor], 0, sizeof(FusionDev));
+
+ snprintf (buf, 4, "%d", minor);
+
+ fusion_devs[minor]->proc_dir = proc_mkdir (buf, proc_fusion_dir);
+ fusion_devs[minor]->index = minor;
+
+ ret = fusiondev_init (fusion_devs[minor]);
+ if (ret) {
+ remove_proc_entry (buf, proc_fusion_dir);
+
+ kfree (fusion_devs[minor]);
+ fusion_devs[minor] = NULL;
+
+ up (&devs_lock);
+
+ return ret;
+ }
+ }
+ else if (file->f_flags & O_EXCL) {
+ if (fusion_devs[minor]->fusionee.last_id) {
+ up (&devs_lock);
+ return -EBUSY;
+ }
+ }
+
+ ret = fusionee_new (fusion_devs[minor], !!(file->f_flags & O_APPEND), &fusionee);
+ if (ret) {
+ if (!fusion_devs[minor]->refs) {
+ fusiondev_deinit (fusion_devs[minor]);
+
+ remove_proc_entry (fusion_devs[minor]->proc_dir->name,
+ proc_fusion_dir);
+
+ kfree (fusion_devs[minor]);
+ fusion_devs[minor] = NULL;
+ }
+
+ up (&devs_lock);
+
+ return ret;
+ }
+
+ fusion_devs[minor]->refs++;
+
+ up (&devs_lock);
+
+
+ file->private_data = fusionee;
+
+ return 0;
+}
+
+static int
+fusion_release (struct inode *inode, struct file *file)
+{
+ int minor = iminor(inode);
+ Fusionee *fusionee = file->private_data;
+
+ DEBUG( "fusion_release( %p, %d )\n", file, atomic_read(&file->f_count) );
+
+ fusionee_destroy (fusion_devs[minor], fusionee);
+
+ down (&devs_lock);
+
+ if (! --fusion_devs[minor]->refs) {
+ fusiondev_deinit (fusion_devs[minor]);
+
+ remove_proc_entry (fusion_devs[minor]->proc_dir->name,
+ proc_fusion_dir);
+
+ kfree (fusion_devs[minor]);
+ fusion_devs[minor] = NULL;
+ }
+
+ up (&devs_lock);
+
+ return 0;
+}
+
+static int
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 18)
+fusion_flush (struct file *file, fl_owner_t id)
+#else
+fusion_flush (struct file *file)
+#endif
+{
+ Fusionee *fusionee = file->private_data;
+ FusionDev *dev = fusion_devs[iminor(file->f_dentry->d_inode)];
+
+ (void) fusionee;
+
+ DEBUG( "fusion_flush( %p, %d, 0x%08x %d )\n", file, atomic_read(&file->f_count), fusionee_id(fusionee), current->pid );
+
+ if (current->flags & PF_EXITING)
+ fusion_skirmish_dismiss_all_from_pid (dev, current->pid);
+
+ return 0;
+}
+
+static ssize_t
+fusion_read (struct file *file, char *buf, size_t count, loff_t *ppos)
+{
+ Fusionee *fusionee = file->private_data;
+ FusionDev *dev = fusion_devs[iminor(file->f_dentry->d_inode)];
+
+ DEBUG( "fusion_read( %p, %d, %d )\n", file, atomic_read(&file->f_count), count );
+
+ return fusionee_get_messages (dev, fusionee, buf, count,
+ !(file->f_flags & O_NONBLOCK));
+}
+
+static unsigned int
+fusion_poll (struct file *file, poll_table * wait)
+{
+ Fusionee *fusionee = file->private_data;
+ FusionDev *dev = fusion_devs[iminor(file->f_dentry->d_inode)];
+
+ DEBUG( "fusion_poll( %p, %d )\n", file, atomic_read(&file->f_count) );
+
+ return fusionee_poll (dev, fusionee, file, wait);
+}
+
+static int
+lounge_ioctl (struct file *file, FusionDev *dev, Fusionee *fusionee,
+ unsigned int cmd, unsigned long arg)
+{
+ int ret;
+ FusionEnter enter;
+ FusionKill kill;
+ FusionEntryInfo info;
+ FusionFork fork = {0};
+
+ switch (_IOC_NR(cmd)) {
+ case _IOC_NR(FUSION_ENTER):
+ if (copy_from_user (&enter, (FusionEnter*) arg, sizeof(enter)))
+ return -EFAULT;
+
+ ret = fusionee_enter( dev, &enter, fusionee );
+ if (ret)
+ return ret;
+
+ if (copy_to_user ((FusionEnter*) arg, &enter, sizeof(enter)))
+ return -EFAULT;
+
+ return 0;
+
+ case _IOC_NR(FUSION_UNBLOCK):
+ if (fusionee_id( fusionee ) != FUSION_ID_MASTER)
+ return -EPERM;
+
+ if (down_interruptible( &dev->enter_lock ))
+ return -EINTR;
+
+ dev->enter_ok = 1;
+
+ wake_up_interruptible_all( &dev->enter_wait );
+
+ up( &dev->enter_lock );
+
+ return 0;
+
+ case _IOC_NR(FUSION_KILL):
+ if (copy_from_user (&kill, (FusionKill*) arg, sizeof(kill)))
+ return -EFAULT;
+
+ return fusionee_kill (dev, fusionee,
+ kill.fusion_id, kill.signal, kill.timeout_ms);
+
+ case _IOC_NR(FUSION_ENTRY_SET_INFO):
+ if (copy_from_user (&info, (FusionEntryInfo*) arg, sizeof(info)))
+ return -EFAULT;
+
+ switch (info.type) {
+ case FT_SKIRMISH:
+ return fusion_entry_set_info (&dev->skirmish, &info);
+
+ case FT_PROPERTY:
+ return fusion_entry_set_info (&dev->properties, &info);
+
+ case FT_REACTOR:
+ return fusion_entry_set_info (&dev->reactor, &info);
+
+ case FT_REF:
+ return fusion_entry_set_info (&dev->ref, &info);
+
+ case FT_SHMPOOL:
+ return fusion_entry_set_info (&dev->shmpool, &info);
+
+ default:
+ return -ENOSYS;
+ }
+
+ case _IOC_NR(FUSION_ENTRY_GET_INFO):
+ if (copy_from_user (&info, (FusionEntryInfo*) arg, sizeof(info)))
+ return -EFAULT;
+
+ switch (info.type) {
+ case FT_SKIRMISH:
+ ret = fusion_entry_get_info (&dev->skirmish, &info);
+ break;
+
+ case FT_PROPERTY:
+ ret = fusion_entry_get_info (&dev->properties, &info);
+ break;
+
+ case FT_REACTOR:
+ ret = fusion_entry_get_info (&dev->reactor, &info);
+ break;
+
+ case FT_REF:
+ ret = fusion_entry_get_info (&dev->ref, &info);
+ break;
+
+ case FT_SHMPOOL:
+ ret = fusion_entry_get_info (&dev->shmpool, &info);
+ break;
+
+ default:
+ return -ENOSYS;
+ }
+
+ if (ret)
+ return ret;
+
+ if (copy_to_user ((FusionEntryInfo*) arg, &info, sizeof(info)))
+ return -EFAULT;
+
+ return 0;
+
+ case _IOC_NR(FUSION_FORK):
+ if (copy_from_user( &fork, (FusionFork*) arg, sizeof(fork) ))
+ return -EFAULT;
+
+ ret = fusionee_fork( dev, &fork, fusionee );
+ if (ret)
+ return ret;
+
+ if (copy_to_user( (FusionFork*) arg, &fork, sizeof(fork) ))
+ return -EFAULT;
+
+ return 0;
+ }
+
+ return -ENOSYS;
+}
+
+static int
+messaging_ioctl (FusionDev *dev, Fusionee *fusionee,
+ unsigned int cmd, unsigned long arg)
+{
+ FusionSendMessage send;
+
+ switch (_IOC_NR(cmd)) {
+ case _IOC_NR(FUSION_SEND_MESSAGE):
+ if (copy_from_user (&send, (FusionSendMessage*) arg, sizeof(send)))
+ return -EFAULT;
+
+ if (send.msg_size <= 0)
+ return -EINVAL;
+
+ /* message data > 64k should be stored in shared memory */
+ if (send.msg_size > 0x10000)
+ return -EMSGSIZE;
+
+ return fusionee_send_message (dev, fusionee, send.fusion_id, FMT_SEND,
+ send.msg_id, send.msg_size, send.msg_data);
+ }
+
+ return -ENOSYS;
+}
+
+static int
+call_ioctl (FusionDev *dev, Fusionee *fusionee,
+ unsigned int cmd, unsigned long arg)
+{
+ int id;
+ int ret;
+ FusionCallNew call;
+ FusionCallExecute execute;
+ FusionCallReturn call_ret;
+ FusionID fusion_id = fusionee_id( fusionee );
+
+ switch (_IOC_NR(cmd)) {
+ case _IOC_NR(FUSION_CALL_NEW):
+ if (copy_from_user (&call, (FusionCallNew*) arg, sizeof(call)))
+ return -EFAULT;
+
+ ret = fusion_call_new (dev, fusion_id, &call);
+ if (ret)
+ return ret;
+
+ if (put_user (call.call_id, (int*) arg)) {
+ fusion_call_destroy (dev, fusion_id, call.call_id);
+ return -EFAULT;
+ }
+ return 0;
+
+ case _IOC_NR(FUSION_CALL_EXECUTE):
+ if (copy_from_user (&execute, (FusionCallExecute*) arg, sizeof(execute)))
+ return -EFAULT;
+
+ ret = fusion_call_execute (dev, fusionee, &execute);
+ if (ret)
+ return ret;
+
+ if (put_user (execute.ret_val, (int*) arg))
+ return -EFAULT;
+ return 0;
+
+ case _IOC_NR(FUSION_CALL_RETURN):
+ if (copy_from_user (&call_ret, (FusionCallReturn*) arg, sizeof(call_ret)))
+ return -EFAULT;
+
+ return fusion_call_return (dev, fusion_id, &call_ret);
+
+ case _IOC_NR(FUSION_CALL_DESTROY):
+ if (get_user (id, (int*) arg))
+ return -EFAULT;
+
+ return fusion_call_destroy (dev, fusion_id, id);
+ }
+
+ return -ENOSYS;
+}
+
+static int
+ref_ioctl (FusionDev *dev, Fusionee *fusionee,
+ unsigned int cmd, unsigned long arg)
+{
+ int id;
+ int ret;
+ int refs;
+ FusionRefWatch watch;
+ FusionRefInherit inherit;
+ FusionID fusion_id = fusionee_id( fusionee );
+
+ switch (_IOC_NR(cmd)) {
+ case _IOC_NR(FUSION_REF_NEW):
+ ret = fusion_ref_new (dev, &id);
+ if (ret)
+ return ret;
+
+ if (put_user (id, (int*) arg)) {
+ fusion_ref_destroy (dev, id);
+ return -EFAULT;
+ }
+ return 0;
+
+ case _IOC_NR(FUSION_REF_UP):
+ if (get_user (id, (int*) arg))
+ return -EFAULT;
+
+ return fusion_ref_up (dev, id, fusion_id);
+
+ case _IOC_NR(FUSION_REF_UP_GLOBAL):
+ if (get_user (id, (int*) arg))
+ return -EFAULT;
+
+ return fusion_ref_up (dev, id, 0);
+
+ case _IOC_NR(FUSION_REF_DOWN):
+ if (get_user (id, (int*) arg))
+ return -EFAULT;
+
+ return fusion_ref_down (dev, id, fusion_id);
+
+ case _IOC_NR(FUSION_REF_DOWN_GLOBAL):
+ if (get_user (id, (int*) arg))
+ return -EFAULT;
+
+ return fusion_ref_down (dev, id, 0);
+
+ case _IOC_NR(FUSION_REF_ZERO_LOCK):
+ if (get_user (id, (int*) arg))
+ return -EFAULT;
+
+ return fusion_ref_zero_lock (dev, id, fusion_id);
+
+ case _IOC_NR(FUSION_REF_ZERO_TRYLOCK):
+ if (get_user (id, (int*) arg))
+ return -EFAULT;
+
+ return fusion_ref_zero_trylock (dev, id, fusion_id);
+
+ case _IOC_NR(FUSION_REF_UNLOCK):
+ if (get_user (id, (int*) arg))
+ return -EFAULT;
+
+ return fusion_ref_zero_unlock (dev, id, fusion_id);
+
+ case _IOC_NR(FUSION_REF_STAT):
+ if (get_user (id, (int*) arg))
+ return -EFAULT;
+
+ ret = fusion_ref_stat (dev, id, &refs);
+ if (ret)
+ return ret;
+
+ return refs;
+
+ case _IOC_NR(FUSION_REF_WATCH):
+ if (copy_from_user (&watch, (FusionRefWatch*) arg, sizeof(watch)))
+ return -EFAULT;
+
+ return fusion_ref_watch (dev, watch.id, watch.call_id, watch.call_arg);
+
+ case _IOC_NR(FUSION_REF_INHERIT):
+ if (copy_from_user (&inherit, (FusionRefInherit*) arg, sizeof(inherit)))
+ return -EFAULT;
+
+ return fusion_ref_inherit (dev, inherit.id, inherit.from);
+
+ case _IOC_NR(FUSION_REF_DESTROY):
+ if (get_user (id, (int*) arg))
+ return -EFAULT;
+
+ return fusion_ref_destroy (dev, id);
+ }
+
+ return -ENOSYS;
+}
+
+static int
+skirmish_ioctl (FusionDev *dev, Fusionee *fusionee,
+ unsigned int cmd, unsigned long arg)
+{
+ int id;
+ int ret;
+ int lock_count;
+ FusionID fusion_id = fusionee_id( fusionee );
+
+ switch (_IOC_NR(cmd)) {
+ case _IOC_NR(FUSION_SKIRMISH_NEW):
+ ret = fusion_skirmish_new (dev, &id);
+ if (ret)
+ return ret;
+
+ if (put_user (id, (int*) arg)) {
+ fusion_skirmish_destroy (dev, id);
+ return -EFAULT;
+ }
+ return 0;
+
+ case _IOC_NR(FUSION_SKIRMISH_PREVAIL):
+ if (get_user (id, (int*) arg))
+ return -EFAULT;
+
+ return fusion_skirmish_prevail (dev, id, fusion_id);
+
+ case _IOC_NR(FUSION_SKIRMISH_SWOOP):
+ if (get_user (id, (int*) arg))
+ return -EFAULT;
+
+ return fusion_skirmish_swoop (dev, id, fusion_id);
+
+ case _IOC_NR(FUSION_SKIRMISH_DISMISS):
+ if (get_user (id, (int*) arg))
+ return -EFAULT;
+
+ return fusion_skirmish_dismiss (dev, id, fusion_id);
+
+ case _IOC_NR(FUSION_SKIRMISH_DESTROY):
+ if (get_user (id, (int*) arg))
+ return -EFAULT;
+
+ return fusion_skirmish_destroy (dev, id);
+
+ case _IOC_NR(FUSION_SKIRMISH_LOCK_COUNT):
+ if (get_user (id, (int*) arg))
+ return -EFAULT;
+
+ ret = fusion_skirmish_lock_count (dev, id, fusion_id, &lock_count);
+ if (put_user(lock_count, ((int*)arg)+1))
+ return -EFAULT;
+
+ return ret;
+ }
+
+ return -ENOSYS;
+}
+
+static int
+property_ioctl (FusionDev *dev, Fusionee *fusionee,
+ unsigned int cmd, unsigned long arg)
+{
+ int id;
+ int ret;
+ FusionID fusion_id = fusionee_id( fusionee );
+
+ switch (_IOC_NR(cmd)) {
+ case _IOC_NR(FUSION_PROPERTY_NEW):
+ ret = fusion_property_new (dev, &id);
+ if (ret)
+ return ret;
+
+ if (put_user (id, (int*) arg)) {
+ fusion_property_destroy (dev, id);
+ return -EFAULT;
+ }
+ return 0;
+
+ case _IOC_NR(FUSION_PROPERTY_LEASE):
+ if (get_user (id, (int*) arg))
+ return -EFAULT;
+
+ return fusion_property_lease (dev, id, fusion_id);
+
+ case _IOC_NR(FUSION_PROPERTY_PURCHASE):
+ if (get_user (id, (int*) arg))
+ return -EFAULT;
+
+ return fusion_property_purchase (dev, id, fusion_id);
+
+ case _IOC_NR(FUSION_PROPERTY_CEDE):
+ if (get_user (id, (int*) arg))
+ return -EFAULT;
+
+ return fusion_property_cede (dev, id, fusion_id);
+
+ case _IOC_NR(FUSION_PROPERTY_HOLDUP):
+ if (get_user (id, (int*) arg))
+ return -EFAULT;
+
+ return fusion_property_holdup (dev, id, fusionee);
+
+ case _IOC_NR(FUSION_PROPERTY_DESTROY):
+ if (get_user (id, (int*) arg))
+ return -EFAULT;
+
+ return fusion_property_destroy (dev, id);
+ }
+
+ return -ENOSYS;
+}
+
+static int
+reactor_ioctl (FusionDev *dev, Fusionee *fusionee,
+ unsigned int cmd, unsigned long arg)
+{
+ int id;
+ int ret;
+ FusionReactorDispatch dispatch;
+ FusionID fusion_id = fusionee_id( fusionee );
+
+ switch (_IOC_NR(cmd)) {
+ case _IOC_NR(FUSION_REACTOR_NEW):
+ ret = fusion_reactor_new (dev, &id);
+ if (ret)
+ return ret;
+
+ if (put_user (id, (int*) arg)) {
+ fusion_reactor_destroy (dev, id);
+ return -EFAULT;
+ }
+ return 0;
+
+ case _IOC_NR(FUSION_REACTOR_ATTACH):
+ if (get_user (id, (int*) arg))
+ return -EFAULT;
+
+ return fusion_reactor_attach (dev, id, fusion_id);
+
+ case _IOC_NR(FUSION_REACTOR_DETACH):
+ if (get_user (id, (int*) arg))
+ return -EFAULT;
+
+ return fusion_reactor_detach (dev, id, fusion_id);
+
+ case _IOC_NR(FUSION_REACTOR_DISPATCH):
+ if (copy_from_user (&dispatch,
+ (FusionReactorDispatch*) arg, sizeof(dispatch)))
+ return -EFAULT;
+
+ if (dispatch.msg_size <= 0)
+ return -EINVAL;
+
+ /* message data > 64k should be stored in shared memory */
+ if (dispatch.msg_size > 0x10000)
+ return -EMSGSIZE;
+
+ return fusion_reactor_dispatch (dev, dispatch.reactor_id,
+ dispatch.self ? NULL : fusionee,
+ dispatch.msg_size, dispatch.msg_data);
+
+ case _IOC_NR(FUSION_REACTOR_DESTROY):
+ if (get_user (id, (int*) arg))
+ return -EFAULT;
+
+ return fusion_reactor_destroy (dev, id);
+ }
+
+ return -ENOSYS;
+}
+
+static int
+shmpool_ioctl (FusionDev *dev, Fusionee *fusionee,
+ unsigned int cmd, unsigned long arg)
+{
+ int id;
+ int ret;
+ FusionSHMPoolNew pool;
+ FusionSHMPoolAttach attach;
+ FusionSHMPoolDispatch dispatch;
+ FusionID fusion_id = fusionee_id( fusionee );
+
+ switch (_IOC_NR(cmd)) {
+ case _IOC_NR(FUSION_SHMPOOL_NEW):
+ if (copy_from_user (&pool, (FusionSHMPoolNew*) arg, sizeof(pool)))
+ return -EFAULT;
+
+ ret = fusion_shmpool_new (dev, &pool);
+ if (ret)
+ return ret;
+
+ if (copy_to_user ((FusionSHMPoolNew*) arg, &pool, sizeof(pool))) {
+ fusion_shmpool_destroy (dev, pool.pool_id);
+ return -EFAULT;
+ }
+
+ return 0;
+
+ case _IOC_NR(FUSION_SHMPOOL_ATTACH):
+ if (copy_from_user (&attach,
+ (FusionSHMPoolAttach*) arg, sizeof(attach)))
+ return -EFAULT;
+
+ ret = fusion_shmpool_attach (dev, &attach, fusion_id);
+ if (ret)
+ return ret;
+
+ if (copy_to_user ((FusionSHMPoolAttach*) arg, &attach, sizeof(attach))) {
+ fusion_shmpool_detach (dev, attach.pool_id, fusion_id);
+ return -EFAULT;
+ }
+
+ return 0;
+
+ case _IOC_NR(FUSION_SHMPOOL_DETACH):
+ if (get_user (id, (int*) arg))
+ return -EFAULT;
+
+ return fusion_shmpool_detach (dev, id, fusion_id);
+
+ case _IOC_NR(FUSION_SHMPOOL_DISPATCH):
+ if (copy_from_user (&dispatch,
+ (FusionSHMPoolDispatch*) arg, sizeof(dispatch)))
+ return -EFAULT;
+
+ return fusion_shmpool_dispatch (dev, &dispatch, fusionee);
+
+ case _IOC_NR(FUSION_SHMPOOL_DESTROY):
+ if (get_user (id, (int*) arg))
+ return -EFAULT;
+
+ return fusion_shmpool_destroy (dev, id);
+ }
+
+ return -ENOSYS;
+}
+
+static int
+fusion_ioctl (struct inode *inode, struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ Fusionee *fusionee = file->private_data;
+ FusionDev *dev = fusion_devs[iminor(inode)];
+
+ DEBUG( "fusion_ioctl (0x%08x)\n", cmd );
+
+ switch (_IOC_TYPE(cmd)) {
+ case FT_LOUNGE:
+ return lounge_ioctl( file, dev, fusionee, cmd, arg );
+
+ case FT_MESSAGING:
+ return messaging_ioctl( dev, fusionee, cmd, arg );
+
+ case FT_CALL:
+ return call_ioctl( dev, fusionee, cmd, arg );
+
+ case FT_REF:
+ return ref_ioctl( dev, fusionee, cmd, arg );
+
+ case FT_SKIRMISH:
+ return skirmish_ioctl( dev, fusionee, cmd, arg );
+
+ case FT_PROPERTY:
+ return property_ioctl( dev, fusionee, cmd, arg );
+
+ case FT_REACTOR:
+ return reactor_ioctl( dev, fusionee, cmd, arg );
+
+ case FT_SHMPOOL:
+ return shmpool_ioctl( dev, fusionee, cmd, arg );
+ }
+
+ return -ENOSYS;
+}
+
+static int
+fusion_mmap( struct file *file,
+ struct vm_area_struct *vma )
+{
+ Fusionee *fusionee = file->private_data;
+ FusionDev *dev = fusion_devs[iminor(file->f_dentry->d_inode)];
+ unsigned int size;
+
+ if (vma->vm_pgoff != 0)
+ return -EINVAL;
+
+ size = vma->vm_end - vma->vm_start;
+ if (!size || size > PAGE_SIZE)
+ return -EINVAL;
+
+ if (!dev->shared_area) {
+ if (fusionee_id( fusionee ) != FUSION_ID_MASTER)
+ return -EPERM;
+
+ dev->shared_area = get_zeroed_page( GFP_KERNEL );
+ if (!dev->shared_area)
+ return -ENOMEM;
+
+ SetPageReserved( virt_to_page(dev->shared_area) );
+ }
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0)
+ return remap_pfn_range( vma, vma->vm_start,
+ virt_to_phys((void*)dev->shared_area) >> PAGE_SHIFT,
+ PAGE_SIZE, vma->vm_page_prot );
+#else
+ return io_remap_page_range( vma->vm_start,
+ virt_to_phys((void*)dev->shared_area),
+ PAGE_SIZE, vma->vm_page_prot );
+#endif
+}
+
+static struct file_operations fusion_fops = {
+ .owner = THIS_MODULE,
+ .open = fusion_open,
+ .flush = fusion_flush,
+ .release = fusion_release,
+ .read = fusion_read,
+ .poll = fusion_poll,
+ .ioctl = fusion_ioctl,
+ .mmap = fusion_mmap
+};
+
+/******************************************************************************/
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0)
+static int __init
+register_devices(void)
+{
+ int i;
+
+ if (register_chrdev (FUSION_MAJOR, "fusion", &fusion_fops)) {
+ printk (KERN_ERR "fusion: unable to get major %d\n", FUSION_MAJOR);
+ return -EIO;
+ }
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 2)
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 13)
+ fusion_class = class_create (THIS_MODULE, "fusion");
+#else
+ fusion_class = class_simple_create (THIS_MODULE, "fusion");
+#endif
+ if (IS_ERR(fusion_class)) {
+ unregister_chrdev (FUSION_MAJOR, "fusion");
+ return PTR_ERR(fusion_class);
+ }
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 18)
+ devfs_mk_dir("fusion");
+#endif
+
+ for (i=0; i<NUM_MINORS; i++) {
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 15)
+ class_device_create (fusion_class,
+ NULL,
+ MKDEV(FUSION_MAJOR, i),
+ NULL, "fusion%d", i);
+#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 13)
+ class_device_create (fusion_class,
+ MKDEV(FUSION_MAJOR, i),
+ NULL, "fusion%d", i);
+#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 2)
+ class_simple_device_add (fusion_class,
+ MKDEV(FUSION_MAJOR, i),
+ NULL, "fusion%d", i);
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 18)
+ devfs_mk_cdev (MKDEV(FUSION_MAJOR, i),
+ S_IFCHR | S_IRUSR | S_IWUSR,
+ "fusion/%d", i);
+#endif
+ }
+
+ return 0;
+}
+#else
+static int __init
+register_devices(void)
+{
+ int i;
+ char buf[16];
+
+ if (devfs_register_chrdev (FUSION_MAJOR, "fusion", &fusion_fops)) {
+ printk (KERN_ERR "fusion: unable to get major %d\n", FUSION_MAJOR);
+ return -EIO;
+ }
+
+ for (i=0; i<NUM_MINORS; i++) {
+ snprintf (buf, 16, "fusion/%d", i);
+
+ devfs_handles[i] = devfs_register (NULL, buf, DEVFS_FL_DEFAULT,
+ FUSION_MAJOR, i,
+ S_IFCHR | S_IRUSR | S_IWUSR,
+ &fusion_fops, NULL);
+ }
+
+ return 0;
+}
+#endif
+
+int __init
+fusion_init(void)
+{
+ int ret;
+
+ ret = register_devices();
+ if (ret)
+ return ret;
+
+ proc_fusion_dir = proc_mkdir ("fusion", NULL);
+
+ return 0;
+}
+
+/******************************************************************************/
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0)
+static void __exit
+deregister_devices(void)
+{
+ int i;
+
+ unregister_chrdev (FUSION_MAJOR, "fusion");
+
+ for (i=0; i<NUM_MINORS; i++) {
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 2)
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 13)
+ class_device_destroy (fusion_class, MKDEV(FUSION_MAJOR, i));
+#else
+ class_simple_device_remove (MKDEV(FUSION_MAJOR, i));
+#endif
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 18)
+ devfs_remove ("fusion/%d", i);
+#endif
+ }
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 2)
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 13)
+ class_destroy (fusion_class);
+#else
+ class_simple_destroy (fusion_class);
+#endif
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 18)
+ devfs_remove ("fusion");
+#endif
+}
+#else
+static void __exit
+deregister_devices(void)
+{
+ int i;
+
+ devfs_unregister_chrdev (FUSION_MAJOR, "fusion");
+
+ for (i=0; i<NUM_MINORS; i++)
+ devfs_unregister (devfs_handles[i]);
+}
+#endif
+
+void __exit
+fusion_exit(void)
+{
+ deregister_devices();
+
+ remove_proc_entry ("fusion", NULL);
+}
+
+module_init(fusion_init);
+module_exit(fusion_exit);
+
diff -urN linux-2.6.22.1-0rig/drivers/char/fusion/fusiondev.h linux-2.6.22.1/drivers/char/fusion/fusiondev.h
--- linux-2.6.22.1-0rig/drivers/char/fusion/fusiondev.h 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.22.1/drivers/char/fusion/fusiondev.h 2006-08-04 18:28:01.000000000 +0200
@@ -0,0 +1,83 @@
+/*
+ * Fusion Kernel Module
+ *
+ * (c) Copyright 2002-2003 Convergence GmbH
+ *
+ * Written by Denis Oliver Kropp <dok@directfb.org>
+ *
+ *
+ * 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 of the License, or (at your option) any later version.
+ */
+
+#ifndef __FUSIONDEV_H__
+#define __FUSIONDEV_H__
+
+#include <linux/proc_fs.h>
+
+#include "entries.h"
+#include "list.h"
+
+#define FUSION_ASSERT(exp) if (!(exp)) BUG()
+#define FUSION_ASSUME(exp) if (!(exp)) printk( KERN_ERR "fusiondev: assumption '" #exp "' failed!\n" )
+
+typedef struct {
+ int refs;
+ int index;
+
+ struct semaphore enter_lock;
+ int enter_ok;
+ wait_queue_head_t enter_wait;
+
+ unsigned long shared_area;
+
+ struct proc_dir_entry *proc_dir;
+
+ struct {
+ int property_lease_purchase;
+ int property_cede;
+
+ int reactor_attach;
+ int reactor_detach;
+
+ int ref_up;
+ int ref_down;
+
+ int skirmish_prevail_swoop;
+ int skirmish_dismiss;
+
+ int shmpool_attach;
+ int shmpool_detach;
+ } stat;
+
+ struct {
+ int ids;
+ FusionLink *list;
+ struct semaphore lock;
+ } call;
+
+ struct {
+ int last_id;
+ FusionLink *list;
+ struct semaphore lock;
+ wait_queue_head_t wait;
+ } fusionee;
+
+ FusionEntries properties;
+ FusionEntries reactor;
+ FusionEntries ref;
+ FusionEntries shmpool;
+ FusionEntries skirmish;
+} FusionDev;
+
+/*
+ * Special version of interruptible_sleep_on() that unlocks the mutex
+ * after adding the entry to the queue (just before schedule).
+ */
+void fusion_sleep_on (wait_queue_head_t *q,
+ struct semaphore *lock,
+ signed long *timeout_ms);
+
+#endif
diff -urN linux-2.6.22.1-0rig/drivers/char/fusion/fusionee.c linux-2.6.22.1/drivers/char/fusion/fusionee.c
--- linux-2.6.22.1-0rig/drivers/char/fusion/fusionee.c 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.22.1/drivers/char/fusion/fusionee.c 2007-01-29 00:31:00.000000000 +0100
@@ -0,0 +1,584 @@
+/*
+ * Fusion Kernel Module
+ *
+ * (c) Copyright 2002-2003 Convergence GmbH
+ *
+ * Written by Denis Oliver Kropp <dok@directfb.org>
+ *
+ *
+ * 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 of the License, or (at your option) any later version.
+ */
+
+#ifdef HAVE_LINUX_CONFIG_H
+#include <linux/config.h>
+#endif
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/smp_lock.h>
+#include <asm/uaccess.h>
+
+#include <linux/fusion.h>
+
+#include "call.h"
+#include "fifo.h"
+#include "list.h"
+#include "fusiondev.h"
+#include "fusionee.h"
+#include "property.h"
+#include "reactor.h"
+#include "ref.h"
+#include "skirmish.h"
+#include "shmpool.h"
+
+#if 0
+#define DEBUG(x...) printk (KERN_DEBUG "Fusion: " x)
+#else
+#define DEBUG(x...) do {} while (0)
+#endif
+
+struct __Fusion_Fusionee {
+ FusionLink link;
+
+ struct semaphore lock;
+
+ FusionID id;
+ int pid;
+
+ FusionFifo messages;
+
+ int rcv_total; /* Total number of messages received. */
+ int snd_total; /* Total number of messages sent. */
+
+ wait_queue_head_t wait;
+
+ bool force_slave;
+};
+
+typedef struct {
+ FusionLink link;
+
+ FusionMessageType type;
+ FusionID id;
+ int size;
+ void *data;
+} Message;
+
+/******************************************************************************/
+
+static int lookup_fusionee (FusionDev *dev, FusionID id, Fusionee **ret_fusionee);
+static int lock_fusionee (FusionDev *dev, FusionID id, Fusionee **ret_fusionee);
+static void unlock_fusionee (Fusionee *fusionee);
+
+/******************************************************************************/
+
+static int
+fusionees_read_proc(char *buf, char **start, off_t offset,
+ int len, int *eof, void *private)
+{
+ FusionLink *l;
+ FusionDev *dev = private;
+ int written = 0;
+
+ if (down_interruptible (&dev->fusionee.lock))
+ return -EINTR;
+
+ fusion_list_foreach (l, dev->fusionee.list) {
+ Fusionee *fusionee = (Fusionee*) l;
+
+ written += sprintf(buf+written, "(%5d) 0x%08lx (%4d messages waiting, %7d received, %7d sent)\n",
+ fusionee->pid, fusionee->id, fusionee->messages.count, fusionee->rcv_total, fusionee->snd_total);
+ if (written < offset) {
+ offset -= written;
+ written = 0;
+ }
+
+ if (written >= len)
+ break;
+ }
+
+ up (&dev->fusionee.lock);
+
+ *start = buf + offset;
+ written -= offset;
+ if (written > len) {
+ *eof = 0;
+ return len;
+ }
+
+ *eof = 1;
+ return(written<0) ? 0 : written;
+}
+
+int
+fusionee_init (FusionDev *dev)
+{
+ init_waitqueue_head (&dev->fusionee.wait);
+
+ init_MUTEX (&dev->fusionee.lock);
+
+ create_proc_read_entry("fusionees", 0, dev->proc_dir,
+ fusionees_read_proc, dev);
+
+ return 0;
+}
+
+void
+fusionee_deinit (FusionDev *dev)
+{
+ FusionLink *l;
+
+ down (&dev->fusionee.lock);
+
+ remove_proc_entry ("fusionees", dev->proc_dir);
+
+ l = dev->fusionee.list;
+ while (l) {
+ FusionLink *next = l->next;
+ Fusionee *fusionee = (Fusionee *) l;
+
+ while (fusionee->messages.count) {
+ Message *message = (Message*) fusion_fifo_get (&fusionee->messages);
+
+ kfree (message);
+ }
+
+ kfree (fusionee);
+
+ l = next;
+ }
+
+ up (&dev->fusionee.lock);
+}
+
+/******************************************************************************/
+
+int
+fusionee_new( FusionDev *dev,
+ bool force_slave,
+ Fusionee **ret_fusionee )
+{
+ Fusionee *fusionee;
+
+ fusionee = kmalloc (sizeof(Fusionee), GFP_KERNEL);
+ if (!fusionee)
+ return -ENOMEM;
+
+ memset (fusionee, 0, sizeof(Fusionee));
+
+ if (down_interruptible (&dev->fusionee.lock)) {
+ kfree (fusionee);
+ return -EINTR;
+ }
+
+ fusionee->pid = current->pid;
+ fusionee->force_slave = force_slave;
+
+ init_MUTEX (&fusionee->lock);
+
+ init_waitqueue_head (&fusionee->wait);
+
+ fusion_list_prepend (&dev->fusionee.list, &fusionee->link);
+
+ up (&dev->fusionee.lock);
+
+ *ret_fusionee = fusionee;
+
+ return 0;
+}
+
+int
+fusionee_enter( FusionDev *dev,
+ FusionEnter *enter,
+ Fusionee *fusionee )
+{
+ if (enter->api.major != FUSION_API_MAJOR || enter->api.minor > FUSION_API_MINOR)
+ return -ENOPROTOOPT;
+
+ if (down_interruptible( &dev->enter_lock ))
+ return -EINTR;
+
+ if (dev->fusionee.last_id || fusionee->force_slave) {
+ while (!dev->enter_ok) {
+ fusion_sleep_on( &dev->enter_wait, &dev->enter_lock, NULL );
+
+ if (signal_pending(current))
+ return -EINTR;
+
+ if (down_interruptible( &dev->enter_lock ))
+ return -EINTR;
+ }
+
+ FUSION_ASSERT( dev->fusionee.last_id != 0 );
+ }
+
+ fusionee->id = ++dev->fusionee.last_id;
+
+ up( &dev->enter_lock );
+
+ enter->fusion_id = fusionee->id;
+
+ return 0;
+}
+
+int
+fusionee_fork( FusionDev *dev,
+ FusionFork *fork,
+ Fusionee *fusionee )
+{
+ int ret;
+
+ ret = fusion_shmpool_fork_all( dev, fusionee->id, fork->fusion_id );
+ if (ret)
+ return ret;
+
+ ret = fusion_reactor_fork_all( dev, fusionee->id, fork->fusion_id );
+ if (ret)
+ return ret;
+
+ ret = fusion_ref_fork_all_local( dev, fusionee->id, fork->fusion_id );
+ if (ret)
+ return ret;
+
+ fork->fusion_id = fusionee->id;
+
+ return 0;
+}
+
+int
+fusionee_send_message (FusionDev *dev,
+ Fusionee *sender,
+ FusionID recipient,
+ FusionMessageType msg_type,
+ int msg_id,
+ int msg_size,
+ const void *msg_data)
+{
+ int ret;
+ Message *message;
+ Fusionee *fusionee;
+
+ DEBUG( "fusionee_send_message (%d -> %d, type %d, id %d, size %d)\n",
+ fusionee->id, recipient, msg_type, msg_id, msg_size );
+
+ ret = lookup_fusionee (dev, recipient, &fusionee);
+ if (ret)
+ return ret;
+
+ if (down_interruptible (&fusionee->lock)) {
+ up (&dev->fusionee.lock);
+ return -EINTR;
+ }
+
+ if (sender && sender != fusionee) {
+ if (down_interruptible (&sender->lock)) {
+ unlock_fusionee (fusionee);
+ up (&dev->fusionee.lock);
+ return -EINTR;
+ }
+ }
+
+ up (&dev->fusionee.lock);
+
+
+ message = kmalloc (sizeof(Message) + msg_size, GFP_KERNEL);
+ if (!message) {
+ if (sender && sender != fusionee)
+ unlock_fusionee (sender);
+ unlock_fusionee (fusionee);
+ return -ENOMEM;
+ }
+
+ message->data = message + 1;
+
+ if (msg_type == FMT_CALL || msg_type == FMT_SHMPOOL)
+ memcpy (message->data, msg_data, msg_size);
+ else if (copy_from_user (message->data, msg_data, msg_size)) {
+ kfree (message);
+ if (sender && sender != fusionee)
+ unlock_fusionee (sender);
+ unlock_fusionee (fusionee);
+ return -EFAULT;
+ }
+
+ message->type = msg_type;
+ message->id = msg_id;
+ message->size = msg_size;
+
+ fusion_fifo_put (&fusionee->messages, &message->link);
+
+ fusionee->rcv_total++;
+ if (sender)
+ sender->snd_total++;
+
+ wake_up_interruptible_all (&fusionee->wait);
+
+ if (sender && sender != fusionee)
+ unlock_fusionee (sender);
+
+ unlock_fusionee (fusionee);
+
+ return 0;
+}
+
+int
+fusionee_get_messages (FusionDev *dev,
+ Fusionee *fusionee,
+ void *buf,
+ int buf_size,
+ bool block)
+{
+ int written = 0;
+
+ if (down_interruptible (&fusionee->lock))
+ return -EINTR;
+
+ while (!fusionee->messages.count) {
+ if (!block) {
+ unlock_fusionee (fusionee);
+ return -EAGAIN;
+ }
+
+ fusion_sleep_on (&fusionee->wait, &fusionee->lock, 0);
+
+ if (signal_pending(current))
+ return -EINTR;
+
+ if (down_interruptible (&fusionee->lock))
+ return -EINTR;
+ }
+
+ while (fusionee->messages.count) {
+ FusionReadMessage header;
+ Message *message = (Message*) fusionee->messages.first;
+ int bytes = message->size + sizeof(header);
+
+ if (bytes > buf_size) {
+ if (!written) {
+ unlock_fusionee (fusionee);
+ return -EMSGSIZE;
+ }
+
+ break;
+ }
+
+ header.msg_type = message->type;
+ header.msg_id = message->id;
+ header.msg_size = message->size;
+
+ if (copy_to_user (buf, &header, sizeof(header)) ||
+ copy_to_user (buf + sizeof(header), message->data, message->size)) {
+ unlock_fusionee (fusionee);
+ return -EFAULT;
+ }
+
+ written += bytes;
+ buf += bytes;
+ buf_size -= bytes;
+
+ fusion_fifo_get (&fusionee->messages);
+
+ kfree (message);
+ }
+
+ unlock_fusionee (fusionee);
+
+ return written;
+}
+
+unsigned int
+fusionee_poll (FusionDev *dev,
+ Fusionee *fusionee,
+ struct file *file,
+ poll_table *wait)
+{
+ int ret;
+ FusionID id = fusionee->id;
+
+ poll_wait (file, &fusionee->wait, wait);
+
+
+ ret = lock_fusionee (dev, id, &fusionee);
+ if (ret)
+ return POLLERR;
+
+ if (fusionee->messages.count) {
+ unlock_fusionee (fusionee);
+
+ return POLLIN | POLLRDNORM;
+ }
+
+ unlock_fusionee (fusionee);
+
+ return 0;
+}
+
+int
+fusionee_kill (FusionDev *dev,
+ Fusionee *fusionee,
+ FusionID target,
+ int signal,
+ int timeout_ms)
+{
+ long timeout = -1;
+
+ while (true) {
+ FusionLink *l;
+ int killed = 0;
+
+ if (down_interruptible (&dev->fusionee.lock))
+ return -EINTR;
+
+ fusion_list_foreach (l, dev->fusionee.list) {
+ Fusionee *f = (Fusionee*) l;
+
+ if (f != fusionee && (!target || target == f->id)) {
+ kill_proc (f->pid, signal, 0);
+ killed++;
+ }
+ }
+
+ if (!killed || timeout_ms < 0) {
+ up (&dev->fusionee.lock);
+ break;
+ }
+
+ if (timeout_ms) {
+ switch (timeout) {
+ case 0: /* timed out */
+ up (&dev->fusionee.lock);
+ return -ETIMEDOUT;
+
+ case -1: /* setup timeout */
+ timeout = (timeout_ms * HZ + 500) / 1000;
+ if (!timeout)
+ timeout = 1;
+
+ /* fall through */
+
+ default:
+ fusion_sleep_on (&dev->fusionee.wait,
+ &dev->fusionee.lock, &timeout);
+ break;
+ }
+ }
+ else
+ fusion_sleep_on (&dev->fusionee.wait, &dev->fusionee.lock, NULL);
+
+ if (signal_pending(current))
+ return -EINTR;
+ }
+
+ return 0;
+}
+
+void
+fusionee_destroy (FusionDev *dev,
+ Fusionee *fusionee)
+{
+ /* Lock list. */
+ down (&dev->fusionee.lock);
+
+ /* Lock fusionee. */
+ down (&fusionee->lock);
+
+ /* Remove from list. */
+ fusion_list_remove (&dev->fusionee.list, &fusionee->link);
+
+ /* Wake up waiting killer. */
+ wake_up_interruptible_all (&dev->fusionee.wait);
+
+ /* Unlock list. */
+ up (&dev->fusionee.lock);
+
+
+ /* Release locks, references, ... */
+ fusion_call_destroy_all (dev, fusionee->id);
+ fusion_skirmish_dismiss_all (dev, fusionee->id);
+ fusion_reactor_detach_all (dev, fusionee->id);
+ fusion_property_cede_all (dev, fusionee->id);
+ fusion_ref_clear_all_local (dev, fusionee->id);
+ fusion_shmpool_detach_all (dev, fusionee->id);
+
+ /* Free all pending messages. */
+ while (fusionee->messages.count) {
+ Message *message = (Message*) fusion_fifo_get (&fusionee->messages);
+
+ kfree (message);
+ }
+
+ /* Unlock fusionee. */
+ up (&fusionee->lock);
+
+
+ /* Free fusionee data. */
+ kfree (fusionee);
+}
+
+FusionID
+fusionee_id( const Fusionee *fusionee )
+{
+ return fusionee->id;
+}
+
+/******************************************************************************/
+
+static int
+lookup_fusionee (FusionDev *dev,
+ FusionID id,
+ Fusionee **ret_fusionee)
+{
+ FusionLink *l;
+
+ if (down_interruptible (&dev->fusionee.lock))
+ return -EINTR;
+
+ fusion_list_foreach (l, dev->fusionee.list) {
+ Fusionee *fusionee = (Fusionee *) l;
+
+ if (fusionee->id == id) {
+ *ret_fusionee = fusionee;
+ return 0;
+ }
+ }
+
+ up (&dev->fusionee.lock);
+
+ return -EINVAL;
+}
+
+static int
+lock_fusionee (FusionDev *dev,
+ FusionID id,
+ Fusionee **ret_fusionee)
+{
+ int ret;
+ Fusionee *fusionee;
+
+ ret = lookup_fusionee (dev, id, &fusionee);
+ if (ret)
+ return ret;
+
+ fusion_list_move_to_front (&dev->fusionee.list, &fusionee->link);
+
+ if (down_interruptible (&fusionee->lock)) {
+ up (&dev->fusionee.lock);
+ return -EINTR;
+ }
+
+ up (&dev->fusionee.lock);
+
+ *ret_fusionee = fusionee;
+
+ return 0;
+}
+
+static void
+unlock_fusionee (Fusionee *fusionee)
+{
+ up (&fusionee->lock);
+}
+
diff -urN linux-2.6.22.1-0rig/drivers/char/fusion/fusionee.h linux-2.6.22.1/drivers/char/fusion/fusionee.h
--- linux-2.6.22.1-0rig/drivers/char/fusion/fusionee.h 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.22.1/drivers/char/fusion/fusionee.h 2007-01-23 22:19:25.000000000 +0100
@@ -0,0 +1,75 @@
+/*
+ * Fusion Kernel Module
+ *
+ * (c) Copyright 2002-2003 Convergence GmbH
+ *
+ * Written by Denis Oliver Kropp <dok@directfb.org>
+ *
+ *
+ * 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 of the License, or (at your option) any later version.
+ */
+
+#ifndef __FUSIONEE_H__
+#define __FUSIONEE_H__
+
+#include <linux/poll.h>
+#include <linux/fusion.h>
+
+#include "fusiondev.h"
+#include "types.h"
+
+/* module init/cleanup */
+
+int fusionee_init (FusionDev *dev);
+void fusionee_deinit (FusionDev *dev);
+
+
+/* internal functions */
+
+int fusionee_new (FusionDev *dev,
+ bool force_slave,
+ Fusionee **ret_fusionee);
+
+int fusionee_enter (FusionDev *dev,
+ FusionEnter *enter,
+ Fusionee *fusionee);
+
+int fusionee_fork (FusionDev *dev,
+ FusionFork *fork,
+ Fusionee *fusionee);
+
+int fusionee_send_message (FusionDev *dev,
+ Fusionee *fusionee,
+ FusionID recipient,
+ FusionMessageType msg_type,
+ int msg_id,
+ int msg_size,
+ const void *msg_data);
+
+int fusionee_get_messages (FusionDev *dev,
+ Fusionee *fusionee,
+ void *buf,
+ int buf_size,
+ bool block);
+
+unsigned
+int fusionee_poll (FusionDev *dev,
+ Fusionee *fusionee,
+ struct file *file,
+ poll_table *wait);
+
+int fusionee_kill (FusionDev *dev,
+ Fusionee *fusionee,
+ FusionID target,
+ int signal,
+ int timeout_ms);
+
+void fusionee_destroy (FusionDev *dev,
+ Fusionee *fusionee);
+
+FusionID fusionee_id( const Fusionee *fusionee );
+
+#endif
diff -urN linux-2.6.22.1-0rig/drivers/char/fusion/Kconfig linux-2.6.22.1/drivers/char/fusion/Kconfig
--- linux-2.6.22.1-0rig/drivers/char/fusion/Kconfig 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.22.1/drivers/char/fusion/Kconfig 2007-08-12 19:33:38.000000000 +0200
@@ -0,0 +1,8 @@
+config FUSION_DEVICE
+ tristate "Fusion device for DirectFB"
+ default m
+ ---help---
+ The fusion device is a software device allowing the DirectFB
+ (Direct Frame Buffer) to support multiple applications
+ It is safe to say N unless you need to run several DirectFB
+ applications concurrently.
diff -urN linux-2.6.22.1-0rig/drivers/char/fusion/list.c linux-2.6.22.1/drivers/char/fusion/list.c
--- linux-2.6.22.1-0rig/drivers/char/fusion/list.c 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.22.1/drivers/char/fusion/list.c 2003-06-16 19:47:03.000000000 +0200
@@ -0,0 +1,62 @@
+/*
+ * Fusion Kernel Module
+ *
+ * (c) Copyright 2002-2003 Convergence GmbH
+ *
+ * Written by Denis Oliver Kropp <dok@directfb.org>
+ *
+ *
+ * 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 of the License, or (at your option) any later version.
+ */
+
+#include <linux/types.h>
+
+#include "list.h"
+
+void
+fusion_list_prepend (FusionLink **list, FusionLink *link)
+{
+ link->prev = NULL;
+ link->next = *list;
+
+ if (*list)
+ (*list)->prev = link;
+
+ *list = link;
+}
+
+void
+fusion_list_remove (FusionLink **list, FusionLink *link)
+{
+ if (link->prev)
+ link->prev->next = link->next;
+ else
+ *list = link->next;
+
+ if (link->next)
+ link->next->prev = link->prev;
+
+ link->next = link->prev = NULL;
+}
+
+void
+fusion_list_move_to_front (FusionLink **list, FusionLink *link)
+{
+ if (*list == link)
+ return;
+
+ link->prev->next = link->next;
+
+ if (link->next)
+ link->next->prev = link->prev;
+
+ link->prev = NULL;
+ link->next = *list;
+
+ (*list)->prev = link;
+
+ *list = link;
+}
diff -urN linux-2.6.22.1-0rig/drivers/char/fusion/list.h linux-2.6.22.1/drivers/char/fusion/list.h
--- linux-2.6.22.1-0rig/drivers/char/fusion/list.h 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.22.1/drivers/char/fusion/list.h 2004-08-17 19:24:36.000000000 +0200
@@ -0,0 +1,39 @@
+/*
+ * Fusion Kernel Module
+ *
+ * (c) Copyright 2002-2003 Convergence GmbH
+ *
+ * Written by Denis Oliver Kropp <dok@directfb.org>
+ *
+ *
+ * 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 of the License, or (at your option) any later version.
+ */
+
+#ifndef __FUSION__LIST_H__
+#define __FUSION__LIST_H__
+
+typedef struct _FusionLink {
+ struct _FusionLink *next;
+ struct _FusionLink *prev;
+} FusionLink;
+
+void fusion_list_prepend (FusionLink **list, FusionLink *link);
+void fusion_list_remove (FusionLink **list, FusionLink *link);
+void fusion_list_move_to_front (FusionLink **list, FusionLink *link);
+
+
+#define fusion_list_foreach(elem, list) \
+ for (elem = (void*)(list); \
+ elem; \
+ elem = (void*)(((FusionLink*)(elem))->next))
+
+#define fusion_list_foreach_safe(elem, temp, list) \
+ for (elem = (void*)(list), temp = ((elem) ? (void*)(((FusionLink*)(elem))->next) : NULL); \
+ elem; \
+ elem = (void*)(temp), temp = ((elem) ? (void*)(((FusionLink*)(elem))->next) : NULL))
+
+#endif /* __FUSION__LIST_H__ */
+
diff -urN linux-2.6.22.1-0rig/drivers/char/fusion/Makefile linux-2.6.22.1/drivers/char/fusion/Makefile
--- linux-2.6.22.1-0rig/drivers/char/fusion/Makefile 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.22.1/drivers/char/fusion/Makefile 2005-10-29 02:38:05.000000000 +0200
@@ -0,0 +1,3 @@
+obj-$(CONFIG_FUSION_DEVICE) += fusion.o
+
+fusion-y := call.o entries.o fifo.o fusiondev.o fusionee.o list.o property.o reactor.o ref.o skirmish.o shmpool.o
diff -urN linux-2.6.22.1-0rig/drivers/char/fusion/property.c linux-2.6.22.1/drivers/char/fusion/property.c
--- linux-2.6.22.1-0rig/drivers/char/fusion/property.c 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.22.1/drivers/char/fusion/property.c 2007-01-20 05:03:01.000000000 +0100
@@ -0,0 +1,340 @@
+/*
+ * Fusion Kernel Module
+ *
+ * (c) Copyright 2002-2003 Convergence GmbH
+ *
+ * Written by Denis Oliver Kropp <dok@directfb.org>
+ *
+ *
+ * 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 of the License, or (at your option) any later version.
+ */
+
+#ifdef HAVE_LINUX_CONFIG_H
+#include <linux/config.h>
+#endif
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/smp_lock.h>
+#include <linux/sched.h>
+
+#ifndef yield
+#define yield schedule
+#endif
+
+#include <linux/fusion.h>
+
+#include "entries.h"
+#include "fusiondev.h"
+#include "fusionee.h"
+#include "list.h"
+#include "property.h"
+
+typedef enum {
+ FUSION_PROPERTY_AVAILABLE = 0,
+ FUSION_PROPERTY_LEASED,
+ FUSION_PROPERTY_PURCHASED
+} FusionPropertyState;
+
+typedef struct {
+ FusionEntry entry;
+
+ FusionPropertyState state;
+ int fusion_id; /* non-zero if leased/purchased */
+ unsigned long purchase_stamp;
+ int lock_pid;
+ int count; /* lock counter */
+} FusionProperty;
+
+static int
+fusion_property_print( FusionEntry *entry,
+ void *ctx,
+ char *buf )
+{
+ FusionProperty *property = (FusionProperty*) entry;
+
+ if (property->state != FUSION_PROPERTY_AVAILABLE) {
+ return sprintf( buf, "%s by 0x%08x (%d) %dx\n",
+ property->state == FUSION_PROPERTY_LEASED ? "leased" : "purchased",
+ property->fusion_id, property->lock_pid, property->count );
+ }
+
+ return sprintf( buf, "\n" );
+}
+
+FUSION_ENTRY_CLASS( FusionProperty, property, NULL, NULL, fusion_property_print )
+
+/******************************************************************************/
+
+int
+fusion_property_init( FusionDev *dev )
+{
+ fusion_entries_init( &dev->properties, &property_class, dev );
+
+ create_proc_read_entry( "properties", 0, dev->proc_dir,
+ fusion_entries_read_proc, &dev->properties );
+
+ return 0;
+}
+
+void
+fusion_property_deinit( FusionDev *dev )
+{
+ remove_proc_entry( "properties", dev->proc_dir );
+
+ fusion_entries_deinit( &dev->properties );
+}
+
+/******************************************************************************/
+
+int
+fusion_property_new( FusionDev *dev, int *ret_id )
+{
+ return fusion_entry_create( &dev->properties, ret_id, NULL );
+}
+
+int
+fusion_property_lease( FusionDev *dev, int id, int fusion_id )
+{
+ int ret;
+ FusionProperty *property;
+ long timeout = -1;
+
+ dev->stat.property_lease_purchase++;
+
+ ret = fusion_property_lock( &dev->properties, id, false, &property );
+ if (ret)
+ return ret;
+
+ while (true) {
+ switch (property->state) {
+ case FUSION_PROPERTY_AVAILABLE:
+ property->state = FUSION_PROPERTY_LEASED;
+ property->fusion_id = fusion_id;
+ property->lock_pid = current->pid;
+ property->count = 1;
+
+ fusion_property_unlock( property );
+ return 0;
+
+ case FUSION_PROPERTY_LEASED:
+ if (property->lock_pid == current->pid) {
+ property->count++;
+
+ fusion_property_unlock( property );
+ return 0;
+ }
+
+ ret = fusion_property_wait( property, NULL );
+ if (ret)
+ return ret;
+
+ break;
+
+ case FUSION_PROPERTY_PURCHASED:
+ if (property->lock_pid == current->pid) {
+ fusion_property_unlock( property );
+ return -EIO;
+ }
+
+ if (timeout == -1) {
+ if (jiffies - property->purchase_stamp > HZ / 10) {
+ fusion_property_unlock( property );
+ return -EAGAIN;
+ }
+
+ timeout = HZ / 10;
+ }
+
+ ret = fusion_property_wait( property, &timeout );
+ if (ret)
+ return ret;
+
+ break;
+
+ default:
+ BUG();
+ }
+ }
+
+ BUG();
+
+ /* won't reach this */
+ return -1;
+}
+
+int
+fusion_property_purchase( FusionDev *dev, int id, int fusion_id )
+{
+ int ret;
+ FusionProperty *property;
+ signed long timeout = -1;
+
+ dev->stat.property_lease_purchase++;
+
+ ret = fusion_property_lock( &dev->properties, id, false, &property );
+ if (ret)
+ return ret;
+
+ while (true) {
+ switch (property->state) {
+ case FUSION_PROPERTY_AVAILABLE:
+ property->state = FUSION_PROPERTY_PURCHASED;
+ property->fusion_id = fusion_id;
+ property->purchase_stamp = jiffies;
+ property->lock_pid = current->pid;
+ property->count = 1;
+
+ fusion_property_notify( property, true );
+
+ fusion_property_unlock( property );
+ return 0;
+
+ case FUSION_PROPERTY_LEASED:
+ if (property->lock_pid == current->pid) {
+ fusion_property_unlock( property );
+ return -EIO;
+ }
+
+ ret = fusion_property_wait( property, NULL );
+ if (ret)
+ return ret;
+
+ break;
+
+ case FUSION_PROPERTY_PURCHASED:
+ if (property->lock_pid == current->pid) {
+ property->count++;
+
+ fusion_property_unlock( property );
+ return 0;
+ }
+
+ if (timeout == -1) {
+ if (jiffies - property->purchase_stamp > HZ) {
+ fusion_property_unlock( property );
+ return -EAGAIN;
+ }
+
+ timeout = HZ;
+ }
+
+ ret = fusion_property_wait( property, &timeout );
+ if (ret)
+ return ret;
+
+ break;
+
+ default:
+ BUG();
+ }
+ }
+
+ BUG();
+
+ /* won't reach this */
+ return -1;
+}
+
+int
+fusion_property_cede( FusionDev *dev, int id, int fusion_id )
+{
+ int ret;
+ FusionProperty *property;
+ bool purchased;
+
+ dev->stat.property_cede++;
+
+ ret = fusion_property_lock( &dev->properties, id, false, &property );
+ if (ret)
+ return ret;
+
+ if (property->lock_pid != current->pid) {
+ fusion_property_unlock( property );
+ return -EIO;
+ }
+
+ if (--property->count) {
+ fusion_property_unlock( property );
+ return 0;
+ }
+
+ purchased = (property->state == FUSION_PROPERTY_PURCHASED);
+
+ property->state = FUSION_PROPERTY_AVAILABLE;
+ property->fusion_id = 0;
+ property->lock_pid = 0;
+
+ fusion_property_notify( property, true );
+
+ fusion_property_unlock( property );
+
+ if (purchased)
+ yield();
+
+ return 0;
+}
+
+int
+fusion_property_holdup( FusionDev *dev, int id, Fusionee *fusionee )
+{
+ int ret;
+ FusionProperty *property;
+ FusionID fusion_id = fusionee_id( fusionee );
+
+ if (fusion_id > 1)
+ return -EPERM;
+
+ ret = fusion_property_lock( &dev->properties, id, false, &property );
+ if (ret)
+ return ret;
+
+ if (property->state == FUSION_PROPERTY_PURCHASED) {
+ if (property->fusion_id == fusion_id) {
+ fusion_property_unlock( property );
+ return -EIO;
+ }
+
+ fusionee_kill( dev, fusionee, property->fusion_id, SIGKILL, -1 );
+ }
+
+ fusion_property_unlock( property );
+
+ return 0;
+}
+
+int
+fusion_property_destroy( FusionDev *dev, int id )
+{
+ return fusion_entry_destroy( &dev->properties, id );
+}
+
+void
+fusion_property_cede_all( FusionDev *dev, int fusion_id )
+{
+ FusionLink *l;
+
+ down( &dev->properties.lock );
+
+ fusion_list_foreach (l, dev->properties.list) {
+ FusionProperty *property = (FusionProperty *) l;
+
+ down( &property->entry.lock );
+
+ if (property->fusion_id == fusion_id) {
+ property->state = FUSION_PROPERTY_AVAILABLE;
+ property->fusion_id = 0;
+ property->lock_pid = 0;
+
+ wake_up_interruptible_all (&property->entry.wait);
+ }
+
+ up( &property->entry.lock );
+ }
+
+ up( &dev->properties.lock );
+}
+
diff -urN linux-2.6.22.1-0rig/drivers/char/fusion/property.h linux-2.6.22.1/drivers/char/fusion/property.h
--- linux-2.6.22.1-0rig/drivers/char/fusion/property.h 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.22.1/drivers/char/fusion/property.h 2007-01-20 05:03:01.000000000 +0100
@@ -0,0 +1,58 @@
+/*
+ * Fusion Kernel Module
+ *
+ * (c) Copyright 2002-2003 Convergence GmbH
+ *
+ * Written by Denis Oliver Kropp <dok@directfb.org>
+ *
+ *
+ * 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 of the License, or (at your option) any later version.
+ */
+
+#ifndef __FUSION__PROPERTY_H__
+#define __FUSION__PROPERTY_H__
+
+#include "fusiondev.h"
+#include "types.h"
+
+
+/* module init/cleanup */
+
+int fusion_property_init (FusionDev *dev);
+void fusion_property_deinit (FusionDev *dev);
+
+
+/* public API */
+
+int fusion_property_new (FusionDev *dev,
+ int *ret_id);
+
+int fusion_property_lease (FusionDev *dev,
+ int id,
+ int fusion_id);
+
+int fusion_property_purchase (FusionDev *dev,
+ int id,
+ int fusion_id);
+
+int fusion_property_cede (FusionDev *dev,
+ int id,
+ int fusion_id);
+
+int fusion_property_holdup (FusionDev *dev,
+ int id,
+ Fusionee *fusionee);
+
+int fusion_property_destroy (FusionDev *dev,
+ int id);
+
+
+/* internal functions */
+
+void fusion_property_cede_all (FusionDev *dev,
+ int fusion_id);
+
+#endif
diff -urN linux-2.6.22.1-0rig/drivers/char/fusion/reactor.c linux-2.6.22.1/drivers/char/fusion/reactor.c
--- linux-2.6.22.1-0rig/drivers/char/fusion/reactor.c 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.22.1/drivers/char/fusion/reactor.c 2007-01-20 05:03:01.000000000 +0100
@@ -0,0 +1,367 @@
+/*
+ * Fusion Kernel Module
+ *
+ * (c) Copyright 2002-2003 Convergence GmbH
+ *
+ * Written by Denis Oliver Kropp <dok@directfb.org>
+ *
+ *
+ * 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 of the License, or (at your option) any later version.
+ */
+
+#ifdef HAVE_LINUX_CONFIG_H
+#include <linux/config.h>
+#endif
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/smp_lock.h>
+#include <linux/sched.h>
+
+#include <linux/fusion.h>
+
+#include "fusiondev.h"
+#include "fusionee.h"
+#include "list.h"
+#include "reactor.h"
+
+typedef struct {
+ FusionLink link;
+
+ int fusion_id;
+
+ int count; /* number of attach calls */
+} ReactorNode;
+
+typedef struct {
+ FusionEntry entry;
+
+ FusionLink *nodes;
+
+ int dispatch_count;
+
+ bool destroyed;
+} FusionReactor;
+
+/******************************************************************************/
+
+static int fork_node ( FusionReactor *reactor,
+ FusionID fusion_id,
+ FusionID from_id );
+
+static void free_all_nodes( FusionReactor *reactor );
+
+/******************************************************************************/
+
+static inline ReactorNode *
+get_node (FusionReactor *reactor,
+ FusionID fusion_id)
+{
+ ReactorNode *node;
+
+ fusion_list_foreach (node, reactor->nodes) {
+ if (node->fusion_id == fusion_id)
+ return node;
+ }
+
+ return NULL;
+}
+
+/******************************************************************************/
+
+static void
+fusion_reactor_destruct( FusionEntry *entry,
+ void *ctx )
+{
+ FusionReactor *reactor = (FusionReactor*) entry;
+
+ free_all_nodes( reactor );
+}
+
+static int
+fusion_reactor_print( FusionEntry *entry,
+ void *ctx,
+ char *buf )
+{
+ int num = 0;
+ FusionReactor *reactor = (FusionReactor*) entry;
+ FusionLink *node = reactor->nodes;
+
+ fusion_list_foreach (node, reactor->nodes) {
+ num++;
+ }
+
+ return sprintf( buf, "%5dx dispatch, %d nodes%s\n", reactor->dispatch_count, num,
+ reactor->destroyed ? " DESTROYED" : "" );
+}
+
+
+FUSION_ENTRY_CLASS( FusionReactor, reactor, NULL,
+ fusion_reactor_destruct, fusion_reactor_print )
+
+/******************************************************************************/
+
+int
+fusion_reactor_init (FusionDev *dev)
+{
+ fusion_entries_init( &dev->reactor, &reactor_class, dev );
+
+ create_proc_read_entry( "reactors", 0, dev->proc_dir,
+ fusion_entries_read_proc, &dev->reactor );
+
+ return 0;
+}
+
+void
+fusion_reactor_deinit (FusionDev *dev)
+{
+ remove_proc_entry ("reactors", dev->proc_dir);
+
+ fusion_entries_deinit( &dev->reactor );
+}
+
+/******************************************************************************/
+
+int
+fusion_reactor_new (FusionDev *dev, int *ret_id)
+{
+ return fusion_entry_create( &dev->reactor, ret_id, NULL );
+}
+
+int
+fusion_reactor_attach (FusionDev *dev, int id, FusionID fusion_id)
+{
+ int ret;
+ ReactorNode *node;
+ FusionReactor *reactor;
+
+ ret = fusion_reactor_lock( &dev->reactor, id, false, &reactor );
+ if (ret)
+ return ret;
+
+ if (reactor->destroyed) {
+ fusion_reactor_unlock( reactor );
+ return -EIDRM;
+ }
+
+ dev->stat.reactor_attach++;
+
+ node = get_node (reactor, fusion_id);
+ if (!node) {
+ node = kmalloc (sizeof(ReactorNode), GFP_KERNEL);
+ if (!node) {
+ fusion_reactor_unlock( reactor );
+ return -ENOMEM;
+ }
+
+ node->fusion_id = fusion_id;
+ node->count = 1;
+
+ fusion_list_prepend (&reactor->nodes, &node->link);
+ }
+ else
+ node->count++;
+
+ fusion_reactor_unlock( reactor );
+
+ return 0;
+}
+
+int
+fusion_reactor_detach (FusionDev *dev, int id, FusionID fusion_id)
+{
+ int ret;
+ ReactorNode *node;
+ FusionReactor *reactor;
+
+ ret = fusion_reactor_lock( &dev->reactor, id, true, &reactor );
+ if (ret)
+ return ret;
+
+ dev->stat.reactor_detach++;
+
+ node = get_node (reactor, fusion_id);
+ if (!node) {
+ fusion_reactor_unlock( reactor );
+ up( &dev->reactor.lock );
+ return -EIO;
+ }
+
+ if (! --node->count) {
+ fusion_list_remove (&reactor->nodes, &node->link);
+ kfree (node);
+ }
+
+ if (reactor->destroyed && !reactor->nodes)
+ fusion_entry_destroy_locked( &dev->reactor, &reactor->entry );
+ else
+ fusion_reactor_unlock( reactor );
+
+ up( &dev->reactor.lock );
+
+ return 0;
+}
+
+int
+fusion_reactor_dispatch (FusionDev *dev, int id, Fusionee *fusionee,
+ int msg_size, const void *msg_data)
+{
+ int ret;
+ FusionLink *l;
+ FusionReactor *reactor;
+ FusionID fusion_id = fusionee ? fusionee_id( fusionee ) : 0;
+
+ ret = fusion_reactor_lock( &dev->reactor, id, false, &reactor );
+ if (ret)
+ return ret;
+
+ if (reactor->destroyed) {
+ fusion_reactor_unlock( reactor );
+ return -EIDRM;
+ }
+
+ reactor->dispatch_count++;
+
+ fusion_list_foreach (l, reactor->nodes) {
+ ReactorNode *node = (ReactorNode *) l;
+
+ if (node->fusion_id == fusion_id)
+ continue;
+
+ fusionee_send_message (dev, fusionee, node->fusion_id, FMT_REACTOR,
+ reactor->entry.id, msg_size, msg_data);
+ }
+
+ fusion_reactor_unlock( reactor );
+
+ return 0;
+}
+
+int
+fusion_reactor_destroy (FusionDev *dev, int id)
+{
+ int ret;
+ FusionReactor *reactor;
+
+ ret = fusion_reactor_lock( &dev->reactor, id, true, &reactor );
+ if (ret)
+ return ret;
+
+ if (reactor->destroyed) {
+ fusion_reactor_unlock( reactor );
+ up( &dev->reactor.lock );
+ return -EIDRM;
+ }
+
+ reactor->destroyed = true;
+
+ if (!reactor->nodes)
+ fusion_entry_destroy_locked( &dev->reactor, &reactor->entry );
+ else
+ fusion_reactor_unlock( reactor );
+
+ up( &dev->reactor.lock );
+
+ return 0;
+}
+
+void
+fusion_reactor_detach_all (FusionDev *dev, FusionID fusion_id)
+{
+ FusionLink *l, *n;
+
+ down (&dev->reactor.lock);
+
+ fusion_list_foreach_safe (l, n, dev->reactor.list) {
+ ReactorNode *node;
+ FusionReactor *reactor = (FusionReactor *) l;
+
+ down (&reactor->entry.lock);
+
+ fusion_list_foreach (node, reactor->nodes) {
+ if (node->fusion_id == fusion_id) {
+ fusion_list_remove (&reactor->nodes, &node->link);
+ kfree (node);
+ break;
+ }
+ }
+
+ if (reactor->destroyed && !reactor->nodes)
+ fusion_entry_destroy_locked( &dev->reactor, &reactor->entry );
+ else
+ up (&reactor->entry.lock);
+ }
+
+ up (&dev->reactor.lock);
+}
+
+int
+fusion_reactor_fork_all (FusionDev *dev, FusionID fusion_id, FusionID from_id)
+{
+ FusionLink *l;
+ int ret = 0;
+
+ down (&dev->reactor.lock);
+
+ fusion_list_foreach (l, dev->reactor.list) {
+ FusionReactor *reactor = (FusionReactor *) l;
+
+ ret = fork_node (reactor, fusion_id, from_id);
+ if (ret)
+ break;
+ }
+
+ up (&dev->reactor.lock);
+
+ return ret;
+}
+
+/******************************************************************************/
+
+static int
+fork_node (FusionReactor *reactor, FusionID fusion_id, FusionID from_id)
+{
+ ReactorNode *node;
+
+ down (&reactor->entry.lock);
+
+ fusion_list_foreach (node, reactor->nodes) {
+ if (node->fusion_id == from_id) {
+ ReactorNode *new_node;
+
+ new_node = kmalloc (sizeof(ReactorNode), GFP_KERNEL);
+ if (!new_node) {
+ up (&reactor->entry.lock);
+ return -ENOMEM;
+ }
+
+ new_node->fusion_id = fusion_id;
+ new_node->count = node->count;
+
+ fusion_list_prepend (&reactor->nodes, &new_node->link);
+
+ break;
+ }
+ }
+
+ up (&reactor->entry.lock);
+
+ return 0;
+}
+
+static void
+free_all_nodes (FusionReactor *reactor)
+
+{
+ FusionLink *n;
+ ReactorNode *node;
+
+ fusion_list_foreach_safe (node, n, reactor->nodes) {
+ kfree (node);
+ }
+
+ reactor->nodes = NULL;
+}
diff -urN linux-2.6.22.1-0rig/drivers/char/fusion/reactor.h linux-2.6.22.1/drivers/char/fusion/reactor.h
--- linux-2.6.22.1-0rig/drivers/char/fusion/reactor.h 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.22.1/drivers/char/fusion/reactor.h 2007-01-20 05:03:01.000000000 +0100
@@ -0,0 +1,59 @@
+/*
+ * Fusion Kernel Module
+ *
+ * (c) Copyright 2002-2003 Convergence GmbH
+ *
+ * Written by Denis Oliver Kropp <dok@directfb.org>
+ *
+ *
+ * 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 of the License, or (at your option) any later version.
+ */
+
+#ifndef __FUSION__REACTOR_H__
+#define __FUSION__REACTOR_H__
+
+#include "fusiondev.h"
+#include "types.h"
+
+
+/* module init/cleanup */
+
+int fusion_reactor_init (FusionDev *dev);
+void fusion_reactor_deinit (FusionDev *dev);
+
+
+/* public API */
+
+int fusion_reactor_new (FusionDev *dev,
+ int *id);
+
+int fusion_reactor_attach (FusionDev *dev,
+ int id,
+ FusionID fusion_id);
+
+int fusion_reactor_detach (FusionDev *dev,
+ int id,
+ FusionID fusion_id);
+
+int fusion_reactor_dispatch (FusionDev *dev,
+ int id,
+ Fusionee *fusionee,
+ int msg_size,
+ const void *msg_data);
+
+int fusion_reactor_destroy (FusionDev *dev,
+ int id);
+
+
+/* internal functions */
+
+void fusion_reactor_detach_all (FusionDev *dev,
+ FusionID fusion_id);
+
+int fusion_reactor_fork_all (FusionDev *dev,
+ FusionID fusion_id,
+ FusionID from_id);
+#endif
diff -urN linux-2.6.22.1-0rig/drivers/char/fusion/ref.c linux-2.6.22.1/drivers/char/fusion/ref.c
--- linux-2.6.22.1-0rig/drivers/char/fusion/ref.c 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.22.1/drivers/char/fusion/ref.c 2007-01-06 14:09:45.000000000 +0100
@@ -0,0 +1,680 @@
+/*
+ * Fusion Kernel Module
+ *
+ * (c) Copyright 2002-2003 Convergence GmbH
+ *
+ * Written by Denis Oliver Kropp <dok@directfb.org>
+ *
+ *
+ * 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 of the License, or (at your option) any later version.
+ */
+
+#ifdef HAVE_LINUX_CONFIG_H
+#include <linux/config.h>
+#endif
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/smp_lock.h>
+#include <linux/sched.h>
+
+#include <linux/fusion.h>
+
+#include "fusiondev.h"
+#include "list.h"
+#include "call.h"
+#include "ref.h"
+
+typedef struct __Fusion_FusionRef FusionRef;
+
+typedef struct {
+ FusionLink link;
+ FusionID fusion_id;
+ int refs;
+} LocalRef;
+
+typedef struct {
+ FusionLink link;
+ FusionRef *ref;
+} Inheritor;
+
+struct __Fusion_FusionRef {
+ FusionEntry entry;
+
+ int global;
+ int local;
+
+ int locked; /* non-zero fusion id of lock owner */
+
+ bool watched; /* true if watch has been installed */
+ int call_id; /* id of call registered with a watch */
+ int call_arg; /* optional call parameter */
+
+ FusionRef *inherited;
+ FusionLink *inheritors;
+
+ FusionLink *local_refs;
+};
+
+/**********************************************************************************************************************/
+
+static int add_local ( FusionRef *ref, FusionID fusion_id, int add );
+static void clear_local ( FusionDev *dev, FusionRef *ref, FusionID fusion_id );
+static int fork_local ( FusionDev *dev, FusionRef *ref, FusionID fusion_id, FusionID from_id );
+static void free_all_local ( FusionRef *ref );
+
+static int propagate_local ( FusionDev *dev, FusionRef *ref, int diff );
+
+static void notify_ref ( FusionDev *dev, FusionRef *ref );
+
+static int add_inheritor ( FusionRef *ref, FusionRef *from );
+static void remove_inheritor( FusionRef *ref, FusionRef *from );
+static void drop_inheritors ( FusionDev *dev, FusionRef *ref );
+
+/**********************************************************************************************************************/
+
+static void
+fusion_ref_destruct( FusionEntry *entry,
+ void *ctx )
+{
+ FusionRef *ref = (FusionRef*) entry;
+ FusionDev *dev = (FusionDev*) ctx;
+
+ drop_inheritors( dev, ref );
+
+ if (ref->inherited)
+ remove_inheritor( ref, ref->inherited );
+
+ free_all_local( ref );
+}
+
+static int
+fusion_ref_print( FusionEntry *entry,
+ void *ctx,
+ char *buf )
+{
+ FusionRef *ref = (FusionRef*) entry;
+
+ if (ref->locked)
+ return sprintf( buf, "%2d %2d (locked by %d)\n", ref->global, ref->local, ref->locked );
+
+ return sprintf( buf, "%2d %2d\n", ref->global, ref->local );
+}
+
+FUSION_ENTRY_CLASS( FusionRef, ref, NULL,
+ fusion_ref_destruct, fusion_ref_print );
+
+/**********************************************************************************************************************/
+
+int
+fusion_ref_init( FusionDev *dev )
+{
+ fusion_entries_init( &dev->ref, &ref_class, dev );
+
+ create_proc_read_entry( "refs", 0, dev->proc_dir, fusion_entries_read_proc, &dev->ref );
+
+ return 0;
+}
+
+void
+fusion_ref_deinit( FusionDev *dev )
+{
+ remove_proc_entry( "refs", dev->proc_dir );
+
+ fusion_entries_deinit( &dev->ref );
+}
+
+/**********************************************************************************************************************/
+
+int
+fusion_ref_new( FusionDev *dev, int *ret_id )
+{
+ return fusion_entry_create( &dev->ref, ret_id, NULL );
+}
+
+int
+fusion_ref_up (FusionDev *dev, int id, FusionID fusion_id)
+{
+ int ret;
+ FusionRef *ref;
+
+ ret = fusion_ref_lock( &dev->ref, id, true, &ref );
+ if (ret)
+ return ret;
+
+ dev->stat.ref_up++;
+
+ if (ref->locked) {
+ ret = -EAGAIN;
+ goto out;
+ }
+
+ if (fusion_id) {
+ ret = add_local (ref, fusion_id, 1);
+ if (ret)
+ goto out;
+
+ ret = propagate_local( dev, ref, 1 );
+ }
+ else
+ ref->global++;
+
+
+out:
+ fusion_ref_unlock( ref );
+ up( &dev->ref.lock );
+
+ return ret;
+}
+
+int
+fusion_ref_down (FusionDev *dev, int id, FusionID fusion_id)
+{
+ int ret;
+ FusionRef *ref;
+
+ ret = fusion_ref_lock( &dev->ref, id, true, &ref );
+ if (ret)
+ return ret;
+
+ dev->stat.ref_down++;
+
+ if (ref->locked) {
+ ret = -EAGAIN;
+ goto out;
+ }
+
+ if (fusion_id) {
+ ret = -EIO;
+ if (!ref->local)
+ goto out;
+
+ ret = add_local (ref, fusion_id, -1);
+ if (ret)
+ goto out;
+
+ ret = propagate_local( dev, ref, -1 );
+ }
+ else {
+ if (!ref->global) {
+ ret = -EIO;
+ goto out;
+ }
+
+ ref->global--;
+
+ if (ref->local + ref->global == 0)
+ notify_ref (dev, ref);
+ }
+
+
+out:
+ fusion_ref_unlock( ref );
+ up( &dev->ref.lock );
+
+ return ret;
+}
+
+int
+fusion_ref_zero_lock (FusionDev *dev, int id, FusionID fusion_id)
+{
+ int ret;
+ FusionRef *ref;
+
+ ret = fusion_ref_lock( &dev->ref, id, false, &ref );
+ if (ret)
+ return ret;
+
+ while (true) {
+ if (ref->watched) {
+ fusion_ref_unlock( ref );
+ return -EACCES;
+ }
+
+ if (ref->locked) {
+ fusion_ref_unlock( ref );
+ return ref->locked == fusion_id ? -EIO : -EAGAIN;
+ }
+
+ if (ref->global || ref->local) {
+ ret = fusion_ref_wait( ref, NULL );
+ if (ret)
+ return ret;
+ }
+ else
+ break;
+ }
+
+ ref->locked = fusion_id;
+
+ fusion_ref_unlock( ref );
+
+ return 0;
+}
+
+int
+fusion_ref_zero_trylock (FusionDev *dev, int id, FusionID fusion_id)
+{
+ int ret;
+ FusionRef *ref;
+
+ ret = fusion_ref_lock( &dev->ref, id, false, &ref );
+ if (ret)
+ return ret;
+
+ if (ref->locked) {
+ fusion_ref_unlock( ref );
+ return ref->locked == fusion_id ? -EIO : -EAGAIN;
+ }
+
+ if (ref->global || ref->local)
+ ret = -ETOOMANYREFS;
+ else
+ ref->locked = fusion_id;
+
+ fusion_ref_unlock( ref );
+
+ return ret;
+}
+
+int
+fusion_ref_zero_unlock (FusionDev *dev, int id, FusionID fusion_id)
+{
+ int ret;
+ FusionRef *ref;
+
+ ret = fusion_ref_lock( &dev->ref, id, false, &ref );
+ if (ret)
+ return ret;
+
+ if (ref->locked != fusion_id) {
+ fusion_ref_unlock( ref );
+ return -EIO;
+ }
+
+ ref->locked = 0;
+
+ fusion_ref_unlock( ref );
+
+ return 0;
+}
+
+int
+fusion_ref_stat (FusionDev *dev, int id, int *refs)
+{
+ int ret;
+ FusionRef *ref;
+
+ ret = fusion_ref_lock( &dev->ref, id, false, &ref );
+ if (ret)
+ return ret;
+
+ *refs = ref->global + ref->local;
+
+ fusion_ref_unlock( ref );
+
+ return 0;
+}
+
+int
+fusion_ref_watch (FusionDev *dev,
+ int id,
+ int call_id,
+ int call_arg)
+{
+ int ret;
+ FusionRef *ref;
+
+ ret = fusion_ref_lock( &dev->ref, id, false, &ref );
+ if (ret)
+ return ret;
+
+ if (ref->entry.pid != current->pid) {
+ fusion_ref_unlock( ref );
+ return -EACCES;
+ }
+
+ if (ref->global + ref->local == 0) {
+ fusion_ref_unlock( ref );
+ return -EIO;
+ }
+
+ if (ref->watched) {
+ fusion_ref_unlock( ref );
+ return -EBUSY;
+ }
+
+ ref->watched = true;
+ ref->call_id = call_id;
+ ref->call_arg = call_arg;
+
+ fusion_ref_notify( ref, true );
+
+ fusion_ref_unlock( ref );
+
+ return 0;
+}
+
+int
+fusion_ref_inherit (FusionDev *dev,
+ int id,
+ int from_id)
+{
+ int ret;
+ FusionRef *ref;
+ FusionRef *from = NULL;
+
+ ret = fusion_ref_lock( &dev->ref, id, true, &ref );
+ if (ret)
+ return ret;
+
+ ret = -EBUSY;
+ if (ref->inherited)
+ goto out;
+
+ ret = -EINVAL;
+ fusion_list_foreach (from, dev->ref.list) {
+ if (from->entry.id == from_id) {
+ if (down_interruptible( &from->entry.lock )) {
+ ret = -EINTR;
+ from = NULL;
+ }
+
+ break;
+ }
+ }
+ if (!from)
+ goto out;
+
+ ret = add_inheritor( ref, from );
+ if (ret)
+ goto out;
+
+ ret = propagate_local( dev, ref, from->local );
+ if (ret)
+ goto out;
+
+ ref->inherited = from;
+
+out:
+ if (from)
+ up( &from->entry.lock );
+
+ fusion_ref_unlock( ref );
+ up ( &dev->ref.lock );
+
+ return ret;
+}
+
+int
+fusion_ref_destroy (FusionDev *dev, int id)
+{
+ return fusion_entry_destroy( &dev->ref, id );
+}
+
+void
+fusion_ref_clear_all_local( FusionDev *dev, FusionID fusion_id )
+{
+ FusionRef *ref;
+
+ down( &dev->ref.lock );
+
+ fusion_list_foreach (ref, dev->ref.list)
+ clear_local( dev, ref, fusion_id );
+
+ up( &dev->ref.lock );
+}
+
+int
+fusion_ref_fork_all_local( FusionDev *dev, FusionID fusion_id, FusionID from_id )
+{
+ FusionRef *ref;
+ int ret = 0;
+
+ down( &dev->ref.lock );
+
+ fusion_list_foreach (ref, dev->ref.list) {
+ ret = fork_local( dev, ref, fusion_id, from_id );
+ if (ret)
+ break;
+ }
+
+ up( &dev->ref.lock );
+
+ return ret;
+}
+
+/**********************************************************************************************************************/
+
+static int
+add_local (FusionRef *ref, FusionID fusion_id, int add)
+{
+ FusionLink *l;
+ LocalRef *local;
+
+ fusion_list_foreach (l, ref->local_refs) {
+ local = (LocalRef *) l;
+
+ if (local->fusion_id == fusion_id) {
+ fusion_list_move_to_front( &ref->local_refs, l );
+
+ if (local->refs + add < 0)
+ return -EIO;
+
+ local->refs += add;
+ return 0;
+ }
+ }
+
+ /* Can only create local node if value is positive. */
+ if (add <= 0)
+ return -EIO;
+
+ local = kmalloc (sizeof(LocalRef), GFP_KERNEL);
+ if (!local)
+ return -ENOMEM;
+
+ local->fusion_id = fusion_id;
+ local->refs = add;
+
+ fusion_list_prepend (&ref->local_refs, &local->link);
+
+ return 0;
+}
+
+static void
+clear_local (FusionDev *dev, FusionRef *ref, FusionID fusion_id)
+{
+ FusionLink *l;
+
+ down (&ref->entry.lock);
+
+ if (ref->locked == fusion_id) {
+ ref->locked = 0;
+ wake_up_interruptible_all (&ref->entry.wait);
+ }
+
+ fusion_list_foreach (l, ref->local_refs) {
+ LocalRef *local = (LocalRef *) l;
+
+ if (local->fusion_id == fusion_id) {
+ if (local->refs)
+ propagate_local( dev, ref, - local->refs );
+
+ fusion_list_remove( &ref->local_refs, l );
+
+ kfree (l);
+ break;
+ }
+ }
+
+ up (&ref->entry.lock);
+}
+
+static int
+fork_local (FusionDev *dev, FusionRef *ref, FusionID fusion_id, FusionID from_id)
+{
+ FusionLink *l;
+ int ret = 0;
+
+ down (&ref->entry.lock);
+
+ fusion_list_foreach (l, ref->local_refs) {
+ LocalRef *local = (LocalRef *) l;
+
+ if (local->fusion_id == from_id) {
+ if (local->refs) {
+ LocalRef *new_local;
+
+ new_local = kmalloc (sizeof(LocalRef), GFP_KERNEL);
+ if (!new_local) {
+ ret = -ENOMEM;
+ break;
+ }
+
+ new_local->fusion_id = fusion_id;
+ new_local->refs = local->refs;
+
+ fusion_list_prepend( &ref->local_refs, &new_local->link );
+
+ propagate_local( dev, ref, local->refs );
+ }
+ break;
+ }
+ }
+
+ up (&ref->entry.lock);
+
+ return ret;
+}
+
+static void
+free_all_local (FusionRef *ref)
+{
+ FusionLink *l = ref->local_refs;
+
+ while (l) {
+ FusionLink *next = l->next;
+
+ kfree (l);
+
+ l = next;
+ }
+
+ ref->local_refs = NULL;
+}
+
+static void
+notify_ref (FusionDev *dev, FusionRef *ref)
+{
+ if (ref->watched) {
+ FusionCallExecute execute;
+
+ execute.call_id = ref->call_id;
+ execute.call_arg = ref->call_arg;
+ execute.call_ptr = NULL;
+
+ fusion_call_execute (dev, 0, &execute);
+ }
+ else
+ wake_up_interruptible_all (&ref->entry.wait);
+}
+
+static int
+propagate_local( FusionDev *dev, FusionRef *ref, int diff )
+{
+ FusionLink *l;
+
+ /* Recurse into inheritors. */
+ fusion_list_foreach (l, ref->inheritors) {
+ FusionRef *inheritor = ((Inheritor*) l)->ref;
+
+ if (down_interruptible( &inheritor->entry.lock )) {
+ printk( KERN_ERR "fusion_ref: propagate_local() interrupted!\n" );
+ //return -EINTR;
+ }
+
+ propagate_local( dev, inheritor, diff );
+
+ up( &inheritor->entry.lock );
+ }
+
+ /* Apply difference. */
+ ref->local += diff;
+
+ /* Notify zero count. */
+ if (ref->local + ref->global == 0)
+ notify_ref( dev, ref );
+
+ return 0;
+}
+
+static int
+add_inheritor(FusionRef *ref, FusionRef *from)
+{
+ Inheritor *inheritor;
+
+ inheritor = kmalloc (sizeof(Inheritor), GFP_KERNEL);
+ if (!inheritor)
+ return -ENOMEM;
+
+ inheritor->ref = ref;
+
+ fusion_list_prepend( &from->inheritors, &inheritor->link );
+
+ return 0;
+}
+
+static void
+remove_inheritor(FusionRef *ref, FusionRef *from)
+{
+ FusionLink *l;
+
+ down( &from->entry.lock );
+
+ fusion_list_foreach (l, from->inheritors) {
+ Inheritor *inheritor = (Inheritor*) l;
+
+ if (inheritor->ref == ref) {
+ fusion_list_remove( &from->inheritors, &inheritor->link );
+
+ kfree( l );
+ break;
+ }
+ }
+
+ up( &from->entry.lock );
+}
+
+static void
+drop_inheritors( FusionDev *dev, FusionRef *ref )
+{
+ FusionLink *l = ref->inheritors;
+
+ while (l) {
+ FusionLink *next = l->next;
+ FusionRef *inheritor = ((Inheritor*) l)->ref;
+
+ if (down_interruptible( &inheritor->entry.lock )) {
+ printk( KERN_ERR "fusion_ref: drop_inheritors() interrupted!\n" );
+ //return;
+ }
+
+ propagate_local( dev, inheritor, - ref->local );
+
+ inheritor->inherited = NULL;
+
+ up( &inheritor->entry.lock );
+
+
+ kfree (l);
+
+ l = next;
+ }
+
+ ref->inheritors = NULL;
+}
+
diff -urN linux-2.6.22.1-0rig/drivers/char/fusion/ref.h linux-2.6.22.1/drivers/char/fusion/ref.h
--- linux-2.6.22.1-0rig/drivers/char/fusion/ref.h 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.22.1/drivers/char/fusion/ref.h 2006-08-14 11:16:54.000000000 +0200
@@ -0,0 +1,79 @@
+/*
+ * Fusion Kernel Module
+ *
+ * (c) Copyright 2002-2003 Convergence GmbH
+ *
+ * Written by Denis Oliver Kropp <dok@directfb.org>
+ *
+ *
+ * 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 of the License, or (at your option) any later version.
+ */
+
+#ifndef __FUSION__REF_H__
+#define __FUSION__REF_H__
+
+#include "fusiondev.h"
+#include "types.h"
+
+
+/* module init/cleanup */
+
+int fusion_ref_init (FusionDev *dev);
+void fusion_ref_deinit (FusionDev *dev);
+
+
+/* public API */
+
+int fusion_ref_new (FusionDev *dev,
+ int *id);
+
+int fusion_ref_up (FusionDev *dev,
+ int id,
+ FusionID fusion_id);
+
+int fusion_ref_down (FusionDev *dev,
+ int id,
+ FusionID fusion_id);
+
+int fusion_ref_zero_lock (FusionDev *dev,
+ int id,
+ FusionID fusion_id);
+
+int fusion_ref_zero_trylock (FusionDev *dev,
+ int id,
+ FusionID fusion_id);
+
+int fusion_ref_zero_unlock (FusionDev *dev,
+ int id,
+ FusionID fusion_id);
+
+int fusion_ref_stat (FusionDev *dev,
+ int id,
+ int *refs);
+
+int fusion_ref_watch (FusionDev *dev,
+ int id,
+ int call_id,
+ int call_arg);
+
+int fusion_ref_inherit (FusionDev *dev,
+ int id,
+ int from);
+
+int fusion_ref_destroy (FusionDev *dev,
+ int id);
+
+
+/* internal functions */
+
+void fusion_ref_clear_all_local (FusionDev *dev,
+ FusionID fusion_id);
+
+int fusion_ref_fork_all_local (FusionDev *dev,
+ FusionID fusion_id,
+ FusionID from_id);
+
+#endif
diff -urN linux-2.6.22.1-0rig/drivers/char/fusion/shmpool.c linux-2.6.22.1/drivers/char/fusion/shmpool.c
--- linux-2.6.22.1-0rig/drivers/char/fusion/shmpool.c 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.22.1/drivers/char/fusion/shmpool.c 2007-01-20 05:03:01.000000000 +0100
@@ -0,0 +1,444 @@
+/*
+ * Fusion Kernel Module
+ *
+ * (c) Copyright 2002-2003 Convergence GmbH
+ *
+ * Written by Denis Oliver Kropp <dok@directfb.org>
+ *
+ *
+ * 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 of the License, or (at your option) any later version.
+ */
+
+#ifdef HAVE_LINUX_CONFIG_H
+#include <linux/config.h>
+#endif
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/smp_lock.h>
+#include <linux/sched.h>
+
+#include <linux/fusion.h>
+
+#include "fusiondev.h"
+#include "fusionee.h"
+#include "list.h"
+#include "shmpool.h"
+
+
+#define SHM_BASE 0x20010000 /* virtual base address */
+#define SHM_SIZE 0x1FFEF000 /* size of virtual address space */
+
+
+typedef struct {
+ FusionLink link;
+ unsigned long next_base;
+} AddrEntry;
+
+
+typedef struct {
+ FusionLink link;
+
+ FusionID fusion_id;
+
+ int count; /* number of attach calls */
+} SHMPoolNode;
+
+typedef struct {
+ FusionEntry entry;
+
+ int max_size;
+
+ void *addr_base;
+ int size;
+
+ AddrEntry *addr_entry;
+
+ FusionLink *nodes;
+
+ int dispatch_count;
+} FusionSHMPool;
+
+/******************************************************************************/
+
+static SHMPoolNode *get_node ( FusionSHMPool *shmpool,
+ FusionID fusion_id );
+
+static void remove_node ( FusionSHMPool *shmpool,
+ FusionID fusion_id );
+
+static int fork_node ( FusionSHMPool *shmpool,
+ FusionID fusion_id,
+ FusionID from_id );
+
+static void free_all_nodes( FusionSHMPool *shmpool );
+
+/******************************************************************************/
+
+
+static DECLARE_MUTEX (addr_lock);
+static FusionLink *addr_entries;
+static unsigned long addr_base = SHM_BASE;
+
+/******************************************************************************/
+
+static AddrEntry *
+add_addr_entry( unsigned long next_base )
+{
+ AddrEntry *entry = kmalloc( sizeof(AddrEntry), GFP_KERNEL );
+
+ entry->next_base = next_base;
+
+ fusion_list_prepend( &addr_entries, &entry->link );
+
+ return entry;
+}
+
+/******************************************************************************/
+
+static int
+fusion_shmpool_construct( FusionEntry *entry,
+ void *ctx,
+ void *create_ctx )
+{
+ FusionSHMPool *shmpool = (FusionSHMPool*) entry;
+ FusionSHMPoolNew *poolnew = create_ctx;
+
+ down( &addr_lock );
+
+ if (addr_base + poolnew->max_size >= SHM_BASE + SHM_SIZE) {
+ up( &addr_lock );
+ printk( KERN_WARNING "%s: virtual address space exhausted! (FIXME)\n", __FUNCTION__ );
+ return -ENOSPC;
+ }
+
+ shmpool->max_size = poolnew->max_size;
+ shmpool->addr_base = poolnew->addr_base = (void*) addr_base;
+
+ addr_base += PAGE_ALIGN(poolnew->max_size) + PAGE_SIZE; /* fence page */
+
+ shmpool->addr_entry = add_addr_entry( addr_base );
+
+ up( &addr_lock );
+
+ return 0;
+}
+
+static void
+fusion_shmpool_destruct( FusionEntry *entry,
+ void *ctx )
+{
+ AddrEntry *addr_entry;
+ FusionSHMPool *shmpool = (FusionSHMPool*) entry;
+
+ free_all_nodes( shmpool );
+
+
+ down( &addr_lock );
+
+ fusion_list_remove( &addr_entries, &shmpool->addr_entry->link );
+
+
+ /*
+ * free trailing address space
+ */
+
+ addr_base = SHM_BASE;
+
+ fusion_list_foreach (addr_entry, addr_entries) {
+ if (addr_entry->next_base > addr_base)
+ addr_base = addr_entry->next_base;
+ }
+
+ up( &addr_lock );
+}
+
+static int
+fusion_shmpool_print( FusionEntry *entry,
+ void *ctx,
+ char *buf )
+{
+ int num = 0;
+ FusionSHMPool *shmpool = (FusionSHMPool*) entry;
+ FusionLink *node = shmpool->nodes;
+
+ fusion_list_foreach (node, shmpool->nodes) {
+ num++;
+ }
+
+ return sprintf( buf, "0x%p [0x%x] - 0x%x, %dx dispatch, %d nodes\n",
+ shmpool->addr_base, shmpool->max_size, shmpool->size,
+ shmpool->dispatch_count, num );
+}
+
+
+FUSION_ENTRY_CLASS( FusionSHMPool, shmpool, fusion_shmpool_construct,
+ fusion_shmpool_destruct, fusion_shmpool_print )
+
+/******************************************************************************/
+
+int
+fusion_shmpool_init (FusionDev *dev)
+{
+ fusion_entries_init( &dev->shmpool, &shmpool_class, dev );
+
+ create_proc_read_entry( "shmpools", 0, dev->proc_dir,
+ fusion_entries_read_proc, &dev->shmpool );
+
+ return 0;
+}
+
+void
+fusion_shmpool_deinit (FusionDev *dev)
+{
+ remove_proc_entry ("shmpools", dev->proc_dir);
+
+ fusion_entries_deinit( &dev->shmpool );
+}
+
+/******************************************************************************/
+
+int
+fusion_shmpool_new (FusionDev *dev,
+ FusionSHMPoolNew *pool)
+{
+ if (pool->max_size <= 0)
+ return -EINVAL;
+
+ return fusion_entry_create( &dev->shmpool, &pool->pool_id, pool );
+}
+
+int
+fusion_shmpool_attach (FusionDev *dev,
+ FusionSHMPoolAttach *attach,
+ FusionID fusion_id)
+{
+ int ret;
+ SHMPoolNode *node;
+ FusionSHMPool *shmpool;
+
+ ret = fusion_shmpool_lock( &dev->shmpool, attach->pool_id, false, &shmpool );
+ if (ret)
+ return ret;
+
+ dev->stat.shmpool_attach++;
+
+ node = get_node (shmpool, fusion_id);
+ if (!node) {
+ node = kmalloc (sizeof(SHMPoolNode), GFP_KERNEL);
+ if (!node) {
+ fusion_shmpool_unlock( shmpool );
+ return -ENOMEM;
+ }
+
+ node->fusion_id = fusion_id;
+ node->count = 1;
+
+ fusion_list_prepend (&shmpool->nodes, &node->link);
+ }
+ else
+ node->count++;
+
+ attach->addr_base = shmpool->addr_base;
+ attach->size = shmpool->size;
+
+ fusion_shmpool_unlock( shmpool );
+
+ return 0;
+}
+
+int
+fusion_shmpool_detach (FusionDev *dev, int id, FusionID fusion_id)
+{
+ int ret;
+ SHMPoolNode *node;
+ FusionSHMPool *shmpool;
+
+ ret = fusion_shmpool_lock( &dev->shmpool, id, false, &shmpool );
+ if (ret)
+ return ret;
+
+ dev->stat.shmpool_detach++;
+
+ node = get_node (shmpool, fusion_id);
+ if (!node) {
+ fusion_shmpool_unlock( shmpool );
+ return -EIO;
+ }
+
+ if (! --node->count) {
+ fusion_list_remove (&shmpool->nodes, &node->link);
+ kfree (node);
+ }
+
+ fusion_shmpool_unlock( shmpool );
+
+ return 0;
+}
+
+int
+fusion_shmpool_dispatch( FusionDev *dev,
+ FusionSHMPoolDispatch *dispatch,
+ Fusionee *fusionee )
+{
+ int ret;
+ FusionLink *l;
+ FusionSHMPool *shmpool;
+ FusionSHMPoolMessage message;
+ FusionID fusion_id = fusionee_id( fusionee );
+
+ if (dispatch->size <= 0)
+ return -EINVAL;
+
+ ret = fusion_shmpool_lock( &dev->shmpool, dispatch->pool_id, false, &shmpool );
+ if (ret)
+ return ret;
+
+ message.type = FSMT_REMAP;
+ message.size = dispatch->size;
+
+ shmpool->dispatch_count++;
+
+ shmpool->size = dispatch->size;
+
+ fusion_list_foreach (l, shmpool->nodes) {
+ SHMPoolNode *node = (SHMPoolNode *) l;
+
+ if (node->fusion_id == fusion_id)
+ continue;
+
+ fusionee_send_message (dev, fusionee, node->fusion_id, FMT_SHMPOOL,
+ shmpool->entry.id, sizeof(message), &message);
+ }
+
+ fusion_shmpool_unlock( shmpool );
+
+ return 0;
+}
+
+int
+fusion_shmpool_destroy (FusionDev *dev, int id)
+{
+ return fusion_entry_destroy( &dev->shmpool, id );
+}
+
+void
+fusion_shmpool_detach_all (FusionDev *dev, FusionID fusion_id)
+{
+ FusionLink *l;
+
+ down (&dev->shmpool.lock);
+
+ fusion_list_foreach (l, dev->shmpool.list) {
+ FusionSHMPool *shmpool = (FusionSHMPool *) l;
+
+ remove_node (shmpool, fusion_id);
+ }
+
+ up (&dev->shmpool.lock);
+}
+
+int
+fusion_shmpool_fork_all( FusionDev *dev,
+ FusionID fusion_id,
+ FusionID from_id )
+{
+ FusionLink *l;
+ int ret = 0;
+
+ down (&dev->shmpool.lock);
+
+ fusion_list_foreach (l, dev->shmpool.list) {
+ FusionSHMPool *shmpool = (FusionSHMPool *) l;
+
+ ret = fork_node( shmpool, fusion_id, from_id );
+ if (ret)
+ break;
+ }
+
+ up (&dev->shmpool.lock);
+
+ return ret;
+}
+
+/******************************************************************************/
+
+static SHMPoolNode *
+get_node (FusionSHMPool *shmpool,
+ FusionID fusion_id)
+{
+ SHMPoolNode *node;
+
+ fusion_list_foreach (node, shmpool->nodes) {
+ if (node->fusion_id == fusion_id)
+ return node;
+ }
+
+ return NULL;
+}
+
+static void
+remove_node (FusionSHMPool *shmpool, FusionID fusion_id)
+{
+ SHMPoolNode *node;
+
+ down (&shmpool->entry.lock);
+
+ fusion_list_foreach (node, shmpool->nodes) {
+ if (node->fusion_id == fusion_id) {
+ fusion_list_remove (&shmpool->nodes, &node->link);
+ break;
+ }
+ }
+
+ up (&shmpool->entry.lock);
+}
+
+static int
+fork_node (FusionSHMPool *shmpool, FusionID fusion_id, FusionID from_id)
+{
+ int ret = 0;
+ SHMPoolNode *node;
+
+ down (&shmpool->entry.lock);
+
+ fusion_list_foreach (node, shmpool->nodes) {
+ if (node->fusion_id == from_id) {
+ SHMPoolNode *new_node;
+
+ new_node = kmalloc (sizeof(SHMPoolNode), GFP_KERNEL);
+ if (!new_node) {
+ ret = -ENOMEM;
+ break;
+ }
+
+ new_node->fusion_id = fusion_id;
+ new_node->count = node->count;
+
+ fusion_list_prepend (&shmpool->nodes, &new_node->link);
+
+ break;
+ }
+ }
+
+ up (&shmpool->entry.lock);
+
+ return ret;
+}
+
+static void
+free_all_nodes (FusionSHMPool *shmpool)
+
+{
+ FusionLink *n;
+ SHMPoolNode *node;
+
+ fusion_list_foreach_safe (node, n, shmpool->nodes) {
+ kfree (node);
+ }
+
+ shmpool->nodes = NULL;
+}
diff -urN linux-2.6.22.1-0rig/drivers/char/fusion/shmpool.h linux-2.6.22.1/drivers/char/fusion/shmpool.h
--- linux-2.6.22.1-0rig/drivers/char/fusion/shmpool.h 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.22.1/drivers/char/fusion/shmpool.h 2007-01-20 05:03:01.000000000 +0100
@@ -0,0 +1,59 @@
+/*
+ * Fusion Kernel Module
+ *
+ * (c) Copyright 2002-2003 Convergence GmbH
+ *
+ * Written by Denis Oliver Kropp <dok@directfb.org>
+ *
+ *
+ * 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 of the License, or (at your option) any later version.
+ */
+
+#ifndef __FUSION__SHMPOOL_H__
+#define __FUSION__SHMPOOL_H__
+
+#include "fusiondev.h"
+#include "types.h"
+
+
+/* module init/cleanup */
+
+int fusion_shmpool_init (FusionDev *dev);
+void fusion_shmpool_deinit (FusionDev *dev);
+
+
+/* public API */
+
+int fusion_shmpool_new (FusionDev *dev,
+ FusionSHMPoolNew *pool);
+
+int fusion_shmpool_attach (FusionDev *dev,
+ FusionSHMPoolAttach *attach,
+ FusionID fusion_id);
+
+int fusion_shmpool_detach (FusionDev *dev,
+ int id,
+ FusionID fusion_id);
+
+int fusion_shmpool_dispatch (FusionDev *dev,
+ FusionSHMPoolDispatch *dispatch,
+ Fusionee *fusionee );
+
+int fusion_shmpool_destroy (FusionDev *dev,
+ int id);
+
+
+/* internal functions */
+
+void fusion_shmpool_detach_all (FusionDev *dev,
+ FusionID fusion_id);
+
+int fusion_shmpool_fork_all (FusionDev *dev,
+ FusionID fusion_id,
+ FusionID from_id);
+
+#endif
+
diff -urN linux-2.6.22.1-0rig/drivers/char/fusion/skirmish.c linux-2.6.22.1/drivers/char/fusion/skirmish.c
--- linux-2.6.22.1-0rig/drivers/char/fusion/skirmish.c 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.22.1/drivers/char/fusion/skirmish.c 2007-01-06 14:09:45.000000000 +0100
@@ -0,0 +1,397 @@
+/*
+ * Fusion Kernel Module
+ *
+ * (c) Copyright 2002-2003 Convergence GmbH
+ *
+ * Written by Denis Oliver Kropp <dok@directfb.org>
+ *
+ *
+ * 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 of the License, or (at your option) any later version.
+ */
+
+#ifdef HAVE_LINUX_CONFIG_H
+#include <linux/config.h>
+#endif
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/smp_lock.h>
+#include <linux/sched.h>
+
+#include <linux/fusion.h>
+
+#include "fusiondev.h"
+#include "fusionee.h"
+#include "list.h"
+#include "skirmish.h"
+
+
+#define MAX_PRE_ACQUISITIONS 32
+
+
+typedef struct __FUSION_FusionSkirmish FusionSkirmish;
+
+struct __FUSION_FusionSkirmish {
+ FusionEntry entry;
+
+ int lock_fid; /* non-zero if locked */
+ int lock_pid;
+ int lock_count;
+
+ int lock_total;
+
+#ifdef FUSION_DEBUG_SKIRMISH_DEADLOCK
+ int pre_acquis[MAX_PRE_ACQUISITIONS];
+
+ bool outer;
+#endif
+};
+
+static int
+fusion_skirmish_print( FusionEntry *entry,
+ void *ctx,
+ char *buf )
+{
+ int written = 0;
+ FusionSkirmish *skirmish = (FusionSkirmish*) entry;
+
+#ifdef FUSION_DEBUG_SKIRMISH_DEADLOCK
+ int i, n;
+
+
+ for (i=0, n=0; i<MAX_PRE_ACQUISITIONS; i++) {
+ if (skirmish->pre_acquis[i]) {
+ n++;
+ }
+ }
+
+ written += sprintf( buf + written, "[%2d]%s", n, skirmish->outer ? "." : " " );
+
+ for (i=0, n=0; i<MAX_PRE_ACQUISITIONS; i++) {
+ if (skirmish->pre_acquis[i]) {
+ written += sprintf( buf + written, "%s%02x", n ? "," : "", skirmish->pre_acquis[i] - 1 );
+
+ n++;
+ }
+ }
+#endif
+
+ if (skirmish->lock_fid) {
+ if (skirmish->entry.waiters)
+ return sprintf( buf + written, " - %dx [0x%08x] (%d) %d WAITING\n",
+ skirmish->lock_count, skirmish->lock_fid,
+ skirmish->lock_pid, skirmish->entry.waiters ) + written;
+ else
+ return sprintf( buf + written, " - %dx [0x%08x] (%d)\n",
+ skirmish->lock_count, skirmish->lock_fid,
+ skirmish->lock_pid ) + written;
+ }
+
+ return sprintf( buf + written, "\n" ) + written;
+}
+
+FUSION_ENTRY_CLASS( FusionSkirmish, skirmish, NULL, NULL, fusion_skirmish_print )
+
+/******************************************************************************/
+
+int
+fusion_skirmish_init (FusionDev *dev)
+{
+ fusion_entries_init( &dev->skirmish, &skirmish_class, dev );
+
+ create_proc_read_entry( "skirmishs", 0, dev->proc_dir,
+ fusion_entries_read_proc, &dev->skirmish );
+
+ return 0;
+}
+
+void
+fusion_skirmish_deinit (FusionDev *dev)
+{
+ remove_proc_entry ("skirmishs", dev->proc_dir);
+
+ fusion_entries_deinit( &dev->skirmish );
+}
+
+/******************************************************************************/
+
+int
+fusion_skirmish_new (FusionDev *dev, int *ret_id)
+{
+ return fusion_entry_create( &dev->skirmish, ret_id, NULL );
+}
+
+int
+fusion_skirmish_prevail (FusionDev *dev, int id, int fusion_id)
+{
+ int ret;
+ FusionSkirmish *skirmish;
+#ifdef FUSION_DEBUG_SKIRMISH_DEADLOCK
+ FusionSkirmish *s;
+ int i;
+ bool outer = true;
+#endif
+
+ dev->stat.skirmish_prevail_swoop++;
+
+ ret = fusion_skirmish_lock( &dev->skirmish, id, true, &skirmish );
+ if (ret)
+ return ret;
+
+ if (skirmish->lock_pid == current->pid) {
+ skirmish->lock_count++;
+ skirmish->lock_total++;
+ fusion_skirmish_unlock( skirmish );
+ up( &dev->skirmish.lock );
+ return 0;
+ }
+
+#ifdef FUSION_DEBUG_SKIRMISH_DEADLOCK
+ /* look in currently acquired skirmishs for this one being
+ a pre-acquisition, indicating a potential deadlock */
+ fusion_list_foreach (s, dev->skirmish.list) {
+ if (s->lock_pid != current->pid)
+ continue;
+
+ outer = false;
+
+ for (i=0; i<MAX_PRE_ACQUISITIONS; i++) {
+ if (s->pre_acquis[i] == id + 1) {
+ printk( KERN_DEBUG "FusionSkirmish: Potential deadlock "
+ "between locked 0x%x and to be locked 0x%x in world %d!\n",
+ s->entry.id, skirmish->entry.id, dev->index );
+ }
+ }
+ }
+
+ if (outer)
+ skirmish->outer = true;
+
+ /* remember all previously acquired skirmishs being pre-acquisitions for
+ this one, to detect potential deadlocks due to a lock order twist */
+ fusion_list_foreach (s, dev->skirmish.list) {
+ int free = -1;
+
+ if (s->lock_pid != current->pid)
+ continue;
+
+ for (i=0; i<MAX_PRE_ACQUISITIONS; i++) {
+ if (skirmish->pre_acquis[i]) {
+ if (skirmish->pre_acquis[i] == s->entry.id + 1) {
+ break;
+ }
+ }
+ else
+ free = i;
+ }
+
+ /* not found? */
+ if (i == MAX_PRE_ACQUISITIONS) {
+ if (free != -1) {
+ skirmish->pre_acquis[free] = s->entry.id + 1;
+ }
+ else {
+ printk( KERN_DEBUG "FusionSkirmish: Too many pre-acquisitions to remember.\n" );
+
+ printk( KERN_DEBUG " [ '%s' ] <- ", skirmish->entry.name );
+
+ for (i=0; i<MAX_PRE_ACQUISITIONS; i++)
+ printk( "0x%03x ", skirmish->pre_acquis[i] - 1 );
+
+ printk( "\n" );
+ }
+ }
+ }
+#endif
+
+ up( &dev->skirmish.lock );
+
+ while (skirmish->lock_pid) {
+ ret = fusion_skirmish_wait( skirmish, NULL );
+ if (ret)
+ return ret;
+ }
+
+ skirmish->lock_fid = fusion_id;
+ skirmish->lock_pid = current->pid;
+ skirmish->lock_count = 1;
+
+ skirmish->lock_total++;
+
+ fusion_skirmish_unlock( skirmish );
+
+ return 0;
+}
+
+int
+fusion_skirmish_swoop (FusionDev *dev, int id, int fusion_id)
+{
+ int ret;
+ FusionSkirmish *skirmish;
+
+ ret = fusion_skirmish_lock( &dev->skirmish, id, false, &skirmish );
+ if (ret)
+ return ret;
+
+ dev->stat.skirmish_prevail_swoop++;
+
+ if (skirmish->lock_fid) {
+ if (skirmish->lock_pid == current->pid) {
+ skirmish->lock_count++;
+ skirmish->lock_total++;
+ fusion_skirmish_unlock( skirmish );
+ return 0;
+ }
+
+ fusion_skirmish_unlock( skirmish );
+
+ return -EAGAIN;
+ }
+
+ skirmish->lock_fid = fusion_id;
+ skirmish->lock_pid = current->pid;
+ skirmish->lock_count = 1;
+
+ skirmish->lock_total++;
+
+ fusion_skirmish_unlock( skirmish );
+
+ return 0;
+}
+
+int
+fusion_skirmish_lock_count (FusionDev *dev, int id, int fusion_id, int *ret_lock_count)
+{
+ int ret;
+ FusionSkirmish *skirmish;
+
+ ret = fusion_skirmish_lock( &dev->skirmish, id, false, &skirmish );
+ if (ret)
+ return ret;
+
+ if (skirmish->lock_fid == fusion_id &&
+ skirmish->lock_pid == current->pid)
+ {
+ *ret_lock_count = skirmish->lock_count;
+ }
+ else
+ {
+ *ret_lock_count = 0;
+ }
+
+ fusion_skirmish_unlock( skirmish );
+
+ return 0;
+}
+
+int
+fusion_skirmish_dismiss (FusionDev *dev, int id, int fusion_id)
+{
+ int ret;
+ FusionSkirmish *skirmish;
+
+ ret = fusion_skirmish_lock( &dev->skirmish, id, false, &skirmish );
+ if (ret)
+ return ret;
+
+ dev->stat.skirmish_dismiss++;
+
+ if (skirmish->lock_pid != current->pid) {
+ fusion_skirmish_unlock( skirmish );
+ return -EIO;
+ }
+
+ if (--skirmish->lock_count == 0) {
+ skirmish->lock_fid = 0;
+ skirmish->lock_pid = 0;
+
+ fusion_skirmish_notify( skirmish, true );
+ }
+
+ fusion_skirmish_unlock( skirmish );
+
+ return 0;
+}
+
+int
+fusion_skirmish_destroy (FusionDev *dev, int id)
+{
+#ifdef FUSION_DEBUG_SKIRMISH_DEADLOCK
+ int i;
+ FusionSkirmish *s;
+
+ /* Lock entries. */
+ if (down_interruptible( &dev->skirmish.lock ))
+ return -EINTR;
+
+ /* remove from all pre-acquisition lists */
+ fusion_list_foreach (s, dev->skirmish.list) {
+ for (i=0; i<MAX_PRE_ACQUISITIONS; i++) {
+ if (s->pre_acquis[i] == id + 1)
+ s->pre_acquis[i] = 0;
+ }
+ }
+
+ up( &dev->skirmish.lock );
+
+ /* FIXME: gap? */
+#endif
+
+ return fusion_entry_destroy( &dev->skirmish, id );
+}
+
+void
+fusion_skirmish_dismiss_all (FusionDev *dev, int fusion_id)
+{
+ FusionLink *l;
+
+ down (&dev->skirmish.lock);
+
+ fusion_list_foreach (l, dev->skirmish.list) {
+ FusionSkirmish *skirmish = (FusionSkirmish *) l;
+
+ down (&skirmish->entry.lock);
+
+ if (skirmish->lock_fid == fusion_id) {
+ skirmish->lock_fid = 0;
+ skirmish->lock_pid = 0;
+ skirmish->lock_count = 0;
+
+ wake_up_interruptible_all (&skirmish->entry.wait);
+ }
+
+ up (&skirmish->entry.lock);
+ }
+
+ up (&dev->skirmish.lock);
+}
+
+void
+fusion_skirmish_dismiss_all_from_pid (FusionDev *dev, int pid)
+{
+ FusionLink *l;
+
+ down (&dev->skirmish.lock);
+
+ fusion_list_foreach (l, dev->skirmish.list) {
+ FusionSkirmish *skirmish = (FusionSkirmish *) l;
+
+ down (&skirmish->entry.lock);
+
+ if (skirmish->lock_pid == pid) {
+ skirmish->lock_fid = 0;
+ skirmish->lock_pid = 0;
+ skirmish->lock_count = 0;
+
+ wake_up_interruptible_all (&skirmish->entry.wait);
+ }
+
+ up (&skirmish->entry.lock);
+ }
+
+ up (&dev->skirmish.lock);
+}
+
diff -urN linux-2.6.22.1-0rig/drivers/char/fusion/skirmish.h linux-2.6.22.1/drivers/char/fusion/skirmish.h
--- linux-2.6.22.1-0rig/drivers/char/fusion/skirmish.h 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.22.1/drivers/char/fusion/skirmish.h 2006-06-30 10:54:55.000000000 +0200
@@ -0,0 +1,62 @@
+/*
+ * Fusion Kernel Module
+ *
+ * (c) Copyright 2002-2003 Convergence GmbH
+ *
+ * Written by Denis Oliver Kropp <dok@directfb.org>
+ *
+ *
+ * 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 of the License, or (at your option) any later version.
+ */
+
+#ifndef __FUSION__SKIRMISH_H__
+#define __FUSION__SKIRMISH_H__
+
+#include "fusiondev.h"
+#include "types.h"
+
+
+/* module init/cleanup */
+
+int fusion_skirmish_init (FusionDev *dev);
+void fusion_skirmish_deinit (FusionDev *dev);
+
+
+/* public API */
+
+int fusion_skirmish_new (FusionDev *dev,
+ int *id);
+
+int fusion_skirmish_prevail (FusionDev *dev,
+ int id,
+ int fusion_id);
+
+int fusion_skirmish_swoop (FusionDev *dev,
+ int id,
+ int fusion_id);
+
+int fusion_skirmish_lock_count (FusionDev *dev,
+ int id,
+ int fusion_id,
+ int *ret_lock_count);
+
+int fusion_skirmish_dismiss (FusionDev *dev,
+ int id,
+ int fusion_id);
+
+int fusion_skirmish_destroy (FusionDev *dev,
+ int id);
+
+
+/* internal functions */
+
+void fusion_skirmish_dismiss_all (FusionDev *dev,
+ int fusion_id);
+
+void fusion_skirmish_dismiss_all_from_pid (FusionDev *dev,
+ int pid);
+
+#endif
diff -urN linux-2.6.22.1-0rig/drivers/char/fusion/types.h linux-2.6.22.1/drivers/char/fusion/types.h
--- linux-2.6.22.1-0rig/drivers/char/fusion/types.h 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.22.1/drivers/char/fusion/types.h 2007-01-20 05:03:01.000000000 +0100
@@ -0,0 +1,29 @@
+/*
+ * Fusion Kernel Module
+ *
+ * (c) Copyright 2002 Convergence GmbH
+ *
+ * Written by Denis Oliver Kropp <dok@directfb.org>
+ *
+ *
+ * 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 of the License, or (at your option) any later version.
+ */
+
+#ifndef __FUSION__TYPES_H__
+#define __FUSION__TYPES_H__
+
+#include <linux/version.h>
+
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 18)
+typedef enum {
+ false = 0,
+ true = !false
+} bool;
+#endif
+
+typedef struct __Fusion_Fusionee Fusionee;
+
+#endif
diff -urN linux-2.6.22.1-0rig/drivers/char/Kconfig linux-2.6.22.1/drivers/char/Kconfig
--- linux-2.6.22.1-0rig/drivers/char/Kconfig 2007-07-10 20:56:30.000000000 +0200
+++ linux-2.6.22.1/drivers/char/Kconfig 2007-08-12 19:30:42.000000000 +0200
@@ -484,6 +484,8 @@
All modern Linux systems use the Unix98 ptys. Say Y unless
you're on an embedded system and want to conserve memory.
+source "drivers/char/fusion/Kconfig"
+
config LEGACY_PTYS
bool "Legacy (BSD) PTY support"
default y
diff -urN linux-2.6.22.1-0rig/drivers/char/Makefile linux-2.6.22.1/drivers/char/Makefile
--- linux-2.6.22.1-0rig/drivers/char/Makefile 2007-07-10 20:56:30.000000000 +0200
+++ linux-2.6.22.1/drivers/char/Makefile 2007-08-12 19:45:20.000000000 +0200
@@ -100,6 +100,7 @@
obj-$(CONFIG_DRM) += drm/
obj-$(CONFIG_PCMCIA) += pcmcia/
obj-$(CONFIG_IPMI_HANDLER) += ipmi/
+obj-$(CONFIG_FUSION_DEVICE) += fusion/
obj-$(CONFIG_HANGCHECK_TIMER) += hangcheck-timer.o
obj-$(CONFIG_TCG_TPM) += tpm/
diff -urN linux-2.6.22.1-0rig/include/linux/fusion.h linux-2.6.22.1/include/linux/fusion.h
--- linux-2.6.22.1-0rig/include/linux/fusion.h 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.22.1/include/linux/fusion.h 2007-01-29 01:43:50.000000000 +0100
@@ -0,0 +1,277 @@
+#ifndef __LINUX__FUSION_H__
+#define __LINUX__FUSION_H__
+
+#include <asm/ioctl.h>
+
+/*
+ * Fusion Kernel Device API Version
+ */
+#define FUSION_API_MAJOR 3 /* Increased if backward compatibility is dropped. */
+#define FUSION_API_MINOR 2 /* Increased if new features are added. */
+
+/*
+ * The Fusion ID is a unique identifier for one process consisting of threads.
+ */
+typedef unsigned long FusionID;
+
+#define FUSION_ID_MASTER 1 /* This is the fusion id of the master (first process). */
+
+/*
+ * Entering a world
+ */
+typedef struct {
+ struct {
+ int major; /* Must be set to FUSION_API_MAJOR before entering. */
+ int minor; /* Must be set to FUSION_API_MINOR before entering. */
+ } api;
+
+ FusionID fusion_id; /* Returns the fusion id of the entering process. */
+} FusionEnter;
+
+/*
+ * Forking in world
+ */
+typedef struct {
+ FusionID fusion_id; /* Returns the fusion id of the new (forked) fusionee. */
+} FusionFork;
+
+/*
+ * Sending a message
+ */
+typedef struct {
+ FusionID fusion_id; /* recipient */
+
+ int msg_id; /* optional message identifier */
+ int msg_size; /* message size, must be greater than zero */
+ const void *msg_data; /* message data, must not be NULL */
+} FusionSendMessage;
+
+/*
+ * Receiving a message
+ */
+typedef enum {
+ FMT_SEND, /* msg_id is an optional custom id */
+ FMT_CALL, /* msg_id is the call id */
+ FMT_REACTOR, /* msg_id is the reactor id */
+ FMT_SHMPOOL /* msg_id is the pool id */
+} FusionMessageType;
+
+typedef struct {
+ FusionMessageType msg_type; /* type (origin) of message */
+
+ int msg_id; /* message id (custom id or call/reactor/pool id) */
+ int msg_size; /* size of the following message data */
+
+ /* message data follows */
+} FusionReadMessage;
+
+/*
+ * Dispatching a message via a reactor
+ */
+typedef struct {
+ int reactor_id;
+ int self;
+
+ int msg_size; /* message size, must be greater than zero */
+ const void *msg_data; /* message data, must not be NULL */
+} FusionReactorDispatch;
+
+/*
+ * Calling (synchronous RPC)
+ */
+typedef struct {
+ int call_id; /* new call id returned */
+
+ void *handler; /* function pointer of handler to install */
+ void *ctx; /* optional handler context */
+} FusionCallNew;
+
+typedef enum {
+ FCEF_NONE = 0x00000000,
+ FCEF_ONEWAY = 0x00000001,
+ FCEF_ALL = 0x00000001
+} FusionCallExecFlags;
+
+typedef struct {
+ int ret_val; /* return value of the call */
+
+ int call_id; /* id of the requested call, each call has a fixed owner */
+
+ int call_arg; /* optional int argument */
+ void *call_ptr; /* optional pointer argument (shared memory) */
+
+ FusionCallExecFlags flags; /* execution flags */
+} FusionCallExecute;
+
+typedef struct {
+ int call_id; /* id of currently executing call */
+
+ int val; /* value to return */
+} FusionCallReturn;
+
+typedef struct {
+ void *handler; /* function pointer of handler to call */
+ void *ctx; /* optional handler context */
+
+ int caller; /* fusion id of the caller or zero if called from Fusion */
+ int call_arg; /* optional call parameter */
+ void *call_ptr; /* optional call parameter */
+} FusionCallMessage;
+
+/*
+ * Watching a reference
+ *
+ * This information is needed to have a specific call being executed if the
+ * reference count reaches zero. Currently one watch per reference is allowed.
+ *
+ * The call is made by Fusion and therefor has a caller id of zero.
+ *
+ */
+typedef struct {
+ int id; /* id of the reference to watch */
+
+ int call_id; /* id of the call to execute */
+ int call_arg; /* optional call parameter, e.g. the id of a user
+ space resource associated with that reference */
+} FusionRefWatch;
+
+/*
+ * Inheriting local count from other reference
+ */
+typedef struct {
+ int id; /* own reference id */
+ int from; /* id of the reference to inherit from */
+} FusionRefInherit;
+
+/*
+ * Killing other fusionees (experimental)
+ */
+typedef struct {
+ FusionID fusion_id; /* fusionee to kill, zero means all but ourself */
+ int signal; /* signal to be delivered, e.g. SIGTERM */
+ int timeout_ms; /* -1 means no timeout, 0 means infinite, otherwise the
+ max. time to wait until the fusionee(s) terminated */
+} FusionKill;
+
+
+/*
+ * Shared memory pools
+ */
+typedef struct {
+ int max_size; /* Maximum size that this pool will be allowed to grow to. */
+
+ int pool_id; /* Returns the new pool id. */
+ void *addr_base; /* Returns the base of the reserved virtual memory address space. */
+} FusionSHMPoolNew;
+
+typedef struct {
+ int pool_id; /* The id of the pool to attach to. */
+
+ void *addr_base; /* Returns the base of the reserved virtual memory address space. */
+ int size; /* Returns the current size of the pool. */
+} FusionSHMPoolAttach;
+
+typedef struct {
+ int pool_id; /* The id of the pool to notify. */
+
+ int size; /* New size of the pool. */
+} FusionSHMPoolDispatch;
+
+typedef enum {
+ FSMT_REMAP, /* Remap the pool due to a change of its size. */
+ FSMT_UNMAP /* Unmap the pool due to its destruction. */
+} FusionSHMPoolMessageType;
+
+typedef struct {
+ FusionSHMPoolMessageType type; /* Type of the message. */
+
+ int size; /* New size of the pool, if type is FSMT_REMAP. */
+} FusionSHMPoolMessage;
+
+
+/*
+ * Fusion types
+ */
+typedef enum {
+ FT_LOUNGE,
+ FT_MESSAGING,
+ FT_CALL,
+ FT_REF,
+ FT_SKIRMISH,
+ FT_PROPERTY,
+ FT_REACTOR,
+ FT_SHMPOOL
+} FusionType;
+
+
+/*
+ * Set attributes like 'name' for an entry of the specified type.
+ */
+#define FUSION_ENTRY_INFO_NAME_LENGTH 24
+
+typedef struct {
+ FusionType type;
+ int id;
+
+ char name[FUSION_ENTRY_INFO_NAME_LENGTH];
+} FusionEntryInfo;
+
+
+
+#define FUSION_ENTER _IOR(FT_LOUNGE, 0x00, FusionEnter)
+#define FUSION_UNBLOCK _IO (FT_LOUNGE, 0x01)
+#define FUSION_KILL _IOW(FT_LOUNGE, 0x02, FusionKill)
+
+#define FUSION_ENTRY_SET_INFO _IOW(FT_LOUNGE, 0x03, FusionEntryInfo)
+#define FUSION_ENTRY_GET_INFO _IOW(FT_LOUNGE, 0x04, FusionEntryInfo)
+
+#define FUSION_FORK _IOW(FT_LOUNGE, 0x05, FusionFork)
+
+#define FUSION_SEND_MESSAGE _IOW(FT_MESSAGING, 0x00, FusionSendMessage)
+
+#define FUSION_CALL_NEW _IOW(FT_CALL, 0x00, FusionCallNew)
+#define FUSION_CALL_EXECUTE _IOW(FT_CALL, 0x01, FusionCallExecute)
+#define FUSION_CALL_RETURN _IOW(FT_CALL, 0x02, FusionCallReturn)
+#define FUSION_CALL_DESTROY _IOW(FT_CALL, 0x03, int)
+
+#define FUSION_REF_NEW _IOW(FT_REF, 0x00, int)
+#define FUSION_REF_UP _IOW(FT_REF, 0x01, int)
+#define FUSION_REF_UP_GLOBAL _IOW(FT_REF, 0x02, int)
+#define FUSION_REF_DOWN _IOW(FT_REF, 0x03, int)
+#define FUSION_REF_DOWN_GLOBAL _IOW(FT_REF, 0x04, int)
+#define FUSION_REF_ZERO_LOCK _IOW(FT_REF, 0x05, int)
+#define FUSION_REF_ZERO_TRYLOCK _IOW(FT_REF, 0x06, int)
+#define FUSION_REF_UNLOCK _IOW(FT_REF, 0x07, int)
+#define FUSION_REF_STAT _IOW(FT_REF, 0x08, int)
+#define FUSION_REF_WATCH _IOW(FT_REF, 0x09, FusionRefWatch)
+#define FUSION_REF_INHERIT _IOW(FT_REF, 0x0A, FusionRefInherit)
+#define FUSION_REF_DESTROY _IOW(FT_REF, 0x0B, int)
+
+#define FUSION_SKIRMISH_NEW _IOW(FT_SKIRMISH, 0x00, int)
+#define FUSION_SKIRMISH_PREVAIL _IOW(FT_SKIRMISH, 0x01, int)
+#define FUSION_SKIRMISH_SWOOP _IOW(FT_SKIRMISH, 0x02, int)
+#define FUSION_SKIRMISH_DISMISS _IOW(FT_SKIRMISH, 0x03, int)
+#define FUSION_SKIRMISH_DESTROY _IOW(FT_SKIRMISH, 0x04, int)
+#define FUSION_SKIRMISH_LOCK_COUNT _IOW(FT_SKIRMISH, 0x05, int)
+
+#define FUSION_PROPERTY_NEW _IOW(FT_PROPERTY, 0x00, int)
+#define FUSION_PROPERTY_LEASE _IOW(FT_PROPERTY, 0x01, int)
+#define FUSION_PROPERTY_PURCHASE _IOW(FT_PROPERTY, 0x02, int)
+#define FUSION_PROPERTY_CEDE _IOW(FT_PROPERTY, 0x03, int)
+#define FUSION_PROPERTY_HOLDUP _IOW(FT_PROPERTY, 0x04, int)
+#define FUSION_PROPERTY_DESTROY _IOW(FT_PROPERTY, 0x05, int)
+
+#define FUSION_REACTOR_NEW _IOW(FT_REACTOR, 0x00, int)
+#define FUSION_REACTOR_ATTACH _IOW(FT_REACTOR, 0x01, int)
+#define FUSION_REACTOR_DETACH _IOW(FT_REACTOR, 0x02, int)
+#define FUSION_REACTOR_DISPATCH _IOW(FT_REACTOR, 0x03, FusionReactorDispatch)
+#define FUSION_REACTOR_DESTROY _IOW(FT_REACTOR, 0x04, int)
+
+#define FUSION_SHMPOOL_NEW _IOW(FT_SHMPOOL, 0x00, FusionSHMPoolNew)
+#define FUSION_SHMPOOL_ATTACH _IOW(FT_SHMPOOL, 0x01, FusionSHMPoolAttach)
+#define FUSION_SHMPOOL_DETACH _IOW(FT_SHMPOOL, 0x02, int)
+#define FUSION_SHMPOOL_DISPATCH _IOW(FT_SHMPOOL, 0x03, FusionSHMPoolDispatch)
+#define FUSION_SHMPOOL_DESTROY _IOW(FT_SHMPOOL, 0x04, int)
+
+#endif
+
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