[apple/xnu.git] / osfmk / device / iokit_rpc.c

/*
 * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 * 
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */
#include <mach_kdb.h>
#include <zone_debug.h>
#include <mach_kdb.h>

#include <mach/boolean.h>
#include <mach/kern_return.h>
#include <mach/mig_errors.h>
#include <mach/port.h>
#include <mach/vm_param.h>
#include <mach/notify.h>
//#include <mach/mach_host_server.h>
#include <mach/mach_types.h>

#include <machine/machparam.h>		/* spl definitions */

#include <ipc/ipc_port.h>
#include <ipc/ipc_space.h>

#include <kern/clock.h>
#include <kern/spl.h>
#include <kern/counters.h>
#include <kern/queue.h>
#include <kern/zalloc.h>
#include <kern/thread.h>
#include <kern/task.h>
#include <kern/sched_prim.h>
#include <kern/misc_protos.h>

#include <vm/pmap.h>
#include <vm/vm_map.h>
#include <vm/vm_kern.h>

#include <device/device_types.h>
#include <device/device_port.h>
#include <device/device_server.h>

#include <machine/machparam.h>

#if defined(__i386__) || defined(__x86_64__)
#include <i386/pmap.h>
#endif
#include <IOKit/IOTypes.h>

#define EXTERN
#define MIGEXTERN

/*
 * Functions in iokit:IOUserClient.cpp
 */

extern void iokit_add_reference( io_object_t obj );

extern ipc_port_t iokit_port_for_object( io_object_t obj,
			ipc_kobject_type_t type );

extern kern_return_t iokit_client_died( io_object_t obj,
                        ipc_port_t port, ipc_kobject_type_t type, mach_port_mscount_t * mscount );

extern kern_return_t
iokit_client_memory_for_type(
	io_object_t	connect,
	unsigned int	type,
	unsigned int *	flags,
	vm_address_t *	address,
	vm_size_t    *	size );


extern ppnum_t IOGetLastPageNumber(void);

/*
 * Functions imported by iokit:IOUserClient.cpp
 */

extern ipc_port_t iokit_alloc_object_port( io_object_t obj,
			ipc_kobject_type_t type );

extern kern_return_t iokit_destroy_object_port( ipc_port_t port );

extern mach_port_name_t iokit_make_send_right( task_t task,
				io_object_t obj, ipc_kobject_type_t type );

extern kern_return_t iokit_mod_send_right( task_t task, mach_port_name_t name, mach_port_delta_t delta );

extern io_object_t iokit_lookup_connect_ref(io_object_t clientRef, ipc_space_t task);

extern io_object_t iokit_lookup_connect_ref_current_task(io_object_t clientRef);

extern void iokit_retain_port( ipc_port_t port );
extern void iokit_release_port( ipc_port_t port );
extern void iokit_release_port_send( ipc_port_t port );

extern kern_return_t iokit_switch_object_port( ipc_port_t port, io_object_t obj, ipc_kobject_type_t type );

/*
 * Functions imported by iokit:IOMemoryDescriptor.cpp
 */

extern kern_return_t IOMapPages(vm_map_t map, mach_vm_address_t va, mach_vm_address_t pa,
                                 mach_vm_size_t length, unsigned int mapFlags);

extern kern_return_t IOUnmapPages(vm_map_t map, mach_vm_address_t va, mach_vm_size_t length);

extern kern_return_t IOProtectCacheMode(vm_map_t map, mach_vm_address_t va,
					mach_vm_size_t length, unsigned int options);

extern unsigned int IODefaultCacheBits(addr64_t pa);

/*
 * Lookup a device by its port.
 * Doesn't consume the naked send right; produces a device reference.
 */
MIGEXTERN io_object_t
iokit_lookup_object_port(
	ipc_port_t	port)
{
	register io_object_t	obj;

	if (!IP_VALID(port))
	    return (NULL);

	ip_lock(port);
	if (ip_active(port) && (ip_kotype(port) == IKOT_IOKIT_OBJECT)) {
	    obj = (io_object_t) port->ip_kobject;
	    iokit_add_reference( obj );
	}
	else
	    obj = NULL;

	ip_unlock(port);

	return( obj );
}

MIGEXTERN io_object_t
iokit_lookup_connect_port(
	ipc_port_t	port)
{
	register io_object_t	obj;

	if (!IP_VALID(port))
	    return (NULL);

	ip_lock(port);
	if (ip_active(port) && (ip_kotype(port) == IKOT_IOKIT_CONNECT)) {
	    obj = (io_object_t) port->ip_kobject;
	    iokit_add_reference( obj );
	}
	else
	    obj = NULL;

	ip_unlock(port);

	return( obj );
}

EXTERN io_object_t
iokit_lookup_connect_ref(io_object_t connectRef, ipc_space_t space)
{
	io_object_t obj = NULL;

	if (connectRef && MACH_PORT_VALID(CAST_MACH_PORT_TO_NAME(connectRef))) {
		ipc_port_t port;
		kern_return_t kr;

		kr = ipc_object_translate(space, CAST_MACH_PORT_TO_NAME(connectRef), MACH_PORT_RIGHT_SEND, (ipc_object_t *)&port);

		if (kr == KERN_SUCCESS) {
            assert(IP_VALID(port));
            
            if (ip_active(port) && (ip_kotype(port) == IKOT_IOKIT_CONNECT)) {
                obj = (io_object_t) port->ip_kobject;
                iokit_add_reference(obj);
            }
            
            ip_unlock(port);
		}
	}

	return obj;
}

EXTERN io_object_t
iokit_lookup_connect_ref_current_task(io_object_t connectRef)
{
	return iokit_lookup_connect_ref(connectRef, current_space());
}

EXTERN void
iokit_retain_port( ipc_port_t port )
{
    ipc_port_reference( port );
}

EXTERN void
iokit_release_port( ipc_port_t port )
{
    ipc_port_release( port );
}

EXTERN void
iokit_release_port_send( ipc_port_t port )
{
    ipc_port_release_send( port );
}

/*
 * Get the port for a device.
 * Consumes a device reference; produces a naked send right.
 */
MIGEXTERN ipc_port_t
iokit_make_object_port(
	io_object_t	obj )
{
    register ipc_port_t	port;
    register ipc_port_t	sendPort;

    if( obj == NULL)
        return IP_NULL;

    port = iokit_port_for_object( obj, IKOT_IOKIT_OBJECT );
    if( port) {
	sendPort = ipc_port_make_send( port);
	iokit_release_port( port );
    } else
	sendPort = IP_NULL;

    iokit_remove_reference( obj );

    return( sendPort);
}

MIGEXTERN ipc_port_t
iokit_make_connect_port(
	io_object_t	obj )
{
    register ipc_port_t	port;
    register ipc_port_t	sendPort;

    if( obj == NULL)
        return IP_NULL;

    port = iokit_port_for_object( obj, IKOT_IOKIT_CONNECT );
    if( port) {
	sendPort = ipc_port_make_send( port);
	iokit_release_port( port );
    } else
	sendPort = IP_NULL;

    iokit_remove_reference( obj );

    return( sendPort);
}

int gIOKitPortCount;

EXTERN ipc_port_t
iokit_alloc_object_port( io_object_t obj, ipc_kobject_type_t type )
{
    ipc_port_t		notify;
    ipc_port_t		port;

    do {

	/* Allocate port, keeping a reference for it. */
        port = ipc_port_alloc_kernel();
        if( port == IP_NULL)
            continue;

        /* set kobject & type */
//	iokit_add_reference( obj );
	ipc_kobject_set( port, (ipc_kobject_t) obj, type);

        /* Request no-senders notifications on the port. */
        notify = ipc_port_make_sonce( port);
        ip_lock( port);
        ipc_port_nsrequest( port, 1, notify, &notify);
        assert( notify == IP_NULL);
	gIOKitPortCount++;

    } while( FALSE);

    return( port );
}


EXTERN kern_return_t
iokit_destroy_object_port( ipc_port_t port )
{
    ipc_kobject_set( port, IKO_NULL, IKOT_NONE);

//    iokit_remove_reference( obj );

    ipc_port_dealloc_kernel( port);
    gIOKitPortCount--;

    return( KERN_SUCCESS);
}

EXTERN kern_return_t
iokit_switch_object_port( ipc_port_t port, io_object_t obj, ipc_kobject_type_t type )
{
    ipc_kobject_set( port, (ipc_kobject_t) obj, type);

    return( KERN_SUCCESS);
}

EXTERN mach_port_name_t
iokit_make_send_right( task_t task, io_object_t obj, ipc_kobject_type_t type )
{
    ipc_port_t		port;
    ipc_port_t		sendPort;
    mach_port_name_t	name;

    if( obj == NULL)
        return MACH_PORT_NULL;

    port = iokit_port_for_object( obj, type );
    if( port) {
	sendPort = ipc_port_make_send( port);
	iokit_release_port( port );
    } else
	sendPort = IP_NULL;

    if (IP_VALID( sendPort )) {
    	kern_return_t	kr;
    	kr = ipc_object_copyout( task->itk_space, (ipc_object_t) sendPort,
				MACH_MSG_TYPE_PORT_SEND, TRUE, &name);
	if ( kr != KERN_SUCCESS)
		name = MACH_PORT_NULL;
    } else if ( sendPort == IP_NULL)
        name = MACH_PORT_NULL;
    else if ( sendPort == IP_DEAD)
    	name = MACH_PORT_DEAD;

    iokit_remove_reference( obj );

    return( name );
}

EXTERN kern_return_t
iokit_mod_send_right( task_t task, mach_port_name_t name, mach_port_delta_t delta )
{
    return (mach_port_mod_refs( task->itk_space, name, MACH_PORT_RIGHT_SEND, delta ));
}

/*
 * Handle the No-More_Senders notification generated from a device port destroy.
 * Since there are no longer any tasks which hold a send right to this device
 * port a NMS notification has been generated. 
 */

static void
iokit_no_senders( mach_no_senders_notification_t * notification )
{
    ipc_port_t		port;
    io_object_t		obj = NULL;
    ipc_kobject_type_t	type = IKOT_NONE;
    ipc_port_t		notify;

    port = (ipc_port_t) notification->not_header.msgh_remote_port;

    // convert a port to io_object_t.
    if( IP_VALID(port)) {
        ip_lock(port);
        if( ip_active(port)) {
            obj = (io_object_t) port->ip_kobject;
	    type = ip_kotype( port );
            if( (IKOT_IOKIT_OBJECT  == type)
	     || (IKOT_IOKIT_CONNECT == type))
                iokit_add_reference( obj );
            else
                obj = NULL;
	}
        ip_unlock(port);

        if( obj ) {

	    mach_port_mscount_t mscount = notification->not_count;

            if( KERN_SUCCESS != iokit_client_died( obj, port, type, &mscount ))
	    {
		/* Re-request no-senders notifications on the port. */
		notify = ipc_port_make_sonce( port);
		ip_lock( port);
		ipc_port_nsrequest( port, mscount + 1, notify, &notify);
		assert( notify == IP_NULL);
	    }
            iokit_remove_reference( obj );
        }
    }
}


EXTERN
boolean_t
iokit_notify( mach_msg_header_t * msg )
{
    switch (msg->msgh_id) {
        case MACH_NOTIFY_NO_SENDERS:
            iokit_no_senders((mach_no_senders_notification_t *) msg);
            return TRUE;

        case MACH_NOTIFY_PORT_DELETED:
        case MACH_NOTIFY_PORT_DESTROYED:
        case MACH_NOTIFY_SEND_ONCE:
        case MACH_NOTIFY_DEAD_NAME:
        default:
            printf("iokit_notify: strange notification %d\n", msg->msgh_id);
            return FALSE;
    }
}

/* need to create a pmap function to generalize */
unsigned int IODefaultCacheBits(addr64_t pa)
{
	return(pmap_cache_attributes((ppnum_t)(pa >> PAGE_SHIFT)));
}

kern_return_t IOMapPages(vm_map_t map, mach_vm_address_t va, mach_vm_address_t pa,
			mach_vm_size_t length, unsigned int options)
{
    vm_prot_t	 prot;
    unsigned int flags;
    ppnum_t	 pagenum;
    pmap_t 	 pmap = map->pmap;

    prot = (options & kIOMapReadOnly)
		? VM_PROT_READ : (VM_PROT_READ|VM_PROT_WRITE);

    pagenum = (ppnum_t)atop_64(pa);

    switch(options & kIOMapCacheMask ) {			/* What cache mode do we need? */

	case kIOMapDefaultCache:
	default:
	    flags = IODefaultCacheBits(pa);
	    break;

	case kIOMapInhibitCache:
	    flags = VM_WIMG_IO;
	    break;

	case kIOMapWriteThruCache:
	    flags = VM_WIMG_WTHRU;
	    break;

	case kIOMapWriteCombineCache:
	    flags = VM_WIMG_WCOMB;
	    break;

	case kIOMapCopybackCache:
	    flags = VM_WIMG_COPYBACK;
	    break;
    }

    pmap_set_cache_attributes(pagenum, flags);

    vm_map_set_cache_attr(map, (vm_map_offset_t)va);


    // Set up a block mapped area
    pmap_map_block(pmap, va, pagenum, (uint32_t) atop_64(round_page_64(length)), prot, 0, 0);

    return( KERN_SUCCESS );
}

kern_return_t IOUnmapPages(vm_map_t map, mach_vm_address_t va, mach_vm_size_t length)
{
    pmap_t	pmap = map->pmap;

    pmap_remove(pmap, trunc_page_64(va), round_page_64(va + length));

    return( KERN_SUCCESS );
}

kern_return_t IOProtectCacheMode(vm_map_t __unused map, mach_vm_address_t __unused va,
					mach_vm_size_t __unused length, unsigned int __unused options)
{
    mach_vm_size_t off;
    vm_prot_t	   prot;
    unsigned int   flags;
    pmap_t 	   pmap = map->pmap;

    prot = (options & kIOMapReadOnly)
		? VM_PROT_READ : (VM_PROT_READ|VM_PROT_WRITE);

    switch (options & kIOMapCacheMask)
    {
	// what cache mode do we need?
	case kIOMapDefaultCache:
	default:
	    return (KERN_INVALID_ARGUMENT);

	case kIOMapInhibitCache:
	    flags = VM_WIMG_IO;
	    break;

	case kIOMapWriteThruCache:
	    flags = VM_WIMG_WTHRU;
	    break;

	case kIOMapWriteCombineCache:
	    flags = VM_WIMG_WCOMB;
	    break;

	case kIOMapCopybackCache:
	    flags = VM_WIMG_COPYBACK;
	    break;
    }

    //  enter each page's physical address in the target map
    for (off = 0; off < length; off += page_size)
    {
	ppnum_t ppnum = pmap_find_phys(pmap, va + off);
	if (ppnum)
	    pmap_enter(pmap, va + off, ppnum, prot, flags, TRUE);
    }

    return (KERN_SUCCESS);
}

ppnum_t IOGetLastPageNumber(void)
{
#if __i386__ || __x86_64__
	ppnum_t	 lastPage, highest = 0;
	unsigned int idx;

	for (idx = 0; idx < pmap_memory_region_count; idx++)
	{
		lastPage = pmap_memory_regions[idx].end - 1;
		if (lastPage > highest)
			highest = lastPage;
	}
	return (highest);
#else
#error unknown arch
#endif
}


void IOGetTime( mach_timespec_t * clock_time);
void IOGetTime( mach_timespec_t * clock_time)
{
	clock_sec_t sec;
	clock_nsec_t nsec;
	clock_get_system_nanotime(&sec, &nsec);
	clock_time->tv_sec = (typeof(clock_time->tv_sec))sec;
	clock_time->tv_nsec = nsec;
}
Commit	Line	Data
1c79356b	1	/*
2d21ac55	2	* Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
1c79356b	3	*
2d21ac55	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
1c79356b	5	*
2d21ac55 A	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. The rights granted to you under the License
	10	* may not be used to create, or enable the creation or redistribution of,
	11	* unlawful or unlicensed copies of an Apple operating system, or to
	12	* circumvent, violate, or enable the circumvention or violation of, any
	13	* terms of an Apple operating system software license agreement.
8f6c56a5	14	*
2d21ac55 A	15	* Please obtain a copy of the License at
	16	* http://www.opensource.apple.com/apsl/ and read it before using this file.
	17	*
	18	* The Original Code and all software distributed under the License are
	19	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
8f6c56a5 A	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
8f6c56a5 A	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
2d21ac55 A	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
	24	* limitations under the License.
8f6c56a5	25	*
2d21ac55	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
1c79356b A	27	*/
	28	#include <mach_kdb.h>
	29	#include <zone_debug.h>
	30	#include <mach_kdb.h>
	31
	32	#include <mach/boolean.h>
	33	#include <mach/kern_return.h>
	34	#include <mach/mig_errors.h>
	35	#include <mach/port.h>
	36	#include <mach/vm_param.h>
	37	#include <mach/notify.h>
2d21ac55	38	//#include <mach/mach_host_server.h>
1c79356b A	39	#include <mach/mach_types.h>
	40
	41	#include <machine/machparam.h> /* spl definitions */
	42
	43	#include <ipc/ipc_port.h>
	44	#include <ipc/ipc_space.h>
	45
	46	#include <kern/clock.h>
	47	#include <kern/spl.h>
1c79356b A	48	#include <kern/counters.h>
	49	#include <kern/queue.h>
	50	#include <kern/zalloc.h>
	51	#include <kern/thread.h>
1c79356b A	52	#include <kern/task.h>
	53	#include <kern/sched_prim.h>
	54	#include <kern/misc_protos.h>
	55
	56	#include <vm/pmap.h>
	57	#include <vm/vm_map.h>
	58	#include <vm/vm_kern.h>
	59
	60	#include <device/device_types.h>
	61	#include <device/device_port.h>
	62	#include <device/device_server.h>
	63
1c79356b A	64	#include <machine/machparam.h>
1c79356b A	65
b0d623f7	66	#if defined(__i386__) \|\| defined(__x86_64__)
91447636 A	67	#include <i386/pmap.h>
91447636 A	68	#endif
1c79356b A	69	#include <IOKit/IOTypes.h>
	70
	71	#define EXTERN
	72	#define MIGEXTERN
	73
	74	/*
	75	* Functions in iokit:IOUserClient.cpp
	76	*/
	77
	78	extern void iokit_add_reference( io_object_t obj );
	79
1c79356b A	80	extern ipc_port_t iokit_port_for_object( io_object_t obj,
	81	ipc_kobject_type_t type );
	82
	83	extern kern_return_t iokit_client_died( io_object_t obj,
55e303ae	84	ipc_port_t port, ipc_kobject_type_t type, mach_port_mscount_t * mscount );
1c79356b A	85
	86	extern kern_return_t
	87	iokit_client_memory_for_type(
	88	io_object_t connect,
	89	unsigned int type,
	90	unsigned int * flags,
	91	vm_address_t * address,
	92	vm_size_t * size );
	93
0c530ab8 A	94
	95	extern ppnum_t IOGetLastPageNumber(void);
	96
2d21ac55 A	97	/*
	98	* Functions imported by iokit:IOUserClient.cpp
	99	*/
	100
	101	extern ipc_port_t iokit_alloc_object_port( io_object_t obj,
	102	ipc_kobject_type_t type );
	103
	104	extern kern_return_t iokit_destroy_object_port( ipc_port_t port );
	105
	106	extern mach_port_name_t iokit_make_send_right( task_t task,
	107	io_object_t obj, ipc_kobject_type_t type );
	108
	109	extern kern_return_t iokit_mod_send_right( task_t task, mach_port_name_t name, mach_port_delta_t delta );
	110
	111	extern io_object_t iokit_lookup_connect_ref(io_object_t clientRef, ipc_space_t task);
	112
	113	extern io_object_t iokit_lookup_connect_ref_current_task(io_object_t clientRef);
	114
	115	extern void iokit_retain_port( ipc_port_t port );
	116	extern void iokit_release_port( ipc_port_t port );
b0d623f7	117	extern void iokit_release_port_send( ipc_port_t port );
2d21ac55 A	118
	119	extern kern_return_t iokit_switch_object_port( ipc_port_t port, io_object_t obj, ipc_kobject_type_t type );
	120
	121	/*
	122	* Functions imported by iokit:IOMemoryDescriptor.cpp
	123	*/
	124
	125	extern kern_return_t IOMapPages(vm_map_t map, mach_vm_address_t va, mach_vm_address_t pa,
	126	mach_vm_size_t length, unsigned int mapFlags);
	127
	128	extern kern_return_t IOUnmapPages(vm_map_t map, mach_vm_address_t va, mach_vm_size_t length);
	129
	130	extern kern_return_t IOProtectCacheMode(vm_map_t map, mach_vm_address_t va,
	131	mach_vm_size_t length, unsigned int options);
	132
	133	extern unsigned int IODefaultCacheBits(addr64_t pa);
	134
1c79356b A	135	/*
	136	* Lookup a device by its port.
	137	* Doesn't consume the naked send right; produces a device reference.
	138	*/
	139	MIGEXTERN io_object_t
	140	iokit_lookup_object_port(
	141	ipc_port_t port)
	142	{
	143	register io_object_t obj;
	144
	145	if (!IP_VALID(port))
	146	return (NULL);
	147
	148	ip_lock(port);
	149	if (ip_active(port) && (ip_kotype(port) == IKOT_IOKIT_OBJECT)) {
	150	obj = (io_object_t) port->ip_kobject;
	151	iokit_add_reference( obj );
	152	}
	153	else
	154	obj = NULL;
	155
	156	ip_unlock(port);
	157
	158	return( obj );
	159	}
	160
	161	MIGEXTERN io_object_t
	162	iokit_lookup_connect_port(
	163	ipc_port_t port)
	164	{
	165	register io_object_t obj;
	166
	167	if (!IP_VALID(port))
	168	return (NULL);
	169
	170	ip_lock(port);
	171	if (ip_active(port) && (ip_kotype(port) == IKOT_IOKIT_CONNECT)) {
	172	obj = (io_object_t) port->ip_kobject;
	173	iokit_add_reference( obj );
	174	}
	175	else
	176	obj = NULL;
	177
	178	ip_unlock(port);
	179
	180	return( obj );
	181	}
	182
	183	EXTERN io_object_t
	184	iokit_lookup_connect_ref(io_object_t connectRef, ipc_space_t space)
	185	{
	186	io_object_t obj = NULL;
	187
b0d623f7	188	if (connectRef && MACH_PORT_VALID(CAST_MACH_PORT_TO_NAME(connectRef))) {
1c79356b A	189	ipc_port_t port;
	190	kern_return_t kr;
	191
b0d623f7	192	kr = ipc_object_translate(space, CAST_MACH_PORT_TO_NAME(connectRef), MACH_PORT_RIGHT_SEND, (ipc_object_t *)&port);
1c79356b A	193
	194	if (kr == KERN_SUCCESS) {
	195	assert(IP_VALID(port));
	196
	197	if (ip_active(port) && (ip_kotype(port) == IKOT_IOKIT_CONNECT)) {
	198	obj = (io_object_t) port->ip_kobject;
	199	iokit_add_reference(obj);
	200	}
	201
	202	ip_unlock(port);
	203	}
	204	}
	205
	206	return obj;
	207	}
	208
	209	EXTERN io_object_t
	210	iokit_lookup_connect_ref_current_task(io_object_t connectRef)
	211	{
	212	return iokit_lookup_connect_ref(connectRef, current_space());
	213	}
	214
9bccf70c A	215	EXTERN void
	216	iokit_retain_port( ipc_port_t port )
	217	{
	218	ipc_port_reference( port );
	219	}
	220
	221	EXTERN void
	222	iokit_release_port( ipc_port_t port )
	223	{
	224	ipc_port_release( port );
	225	}
	226
b0d623f7 A	227	EXTERN void
	228	iokit_release_port_send( ipc_port_t port )
	229	{
	230	ipc_port_release_send( port );
	231	}
	232
1c79356b A	233	/*
	234	* Get the port for a device.
	235	* Consumes a device reference; produces a naked send right.
	236	*/
	237	MIGEXTERN ipc_port_t
	238	iokit_make_object_port(
	239	io_object_t obj )
	240	{
	241	register ipc_port_t port;
9bccf70c	242	register ipc_port_t sendPort;
1c79356b A	243
	244	if( obj == NULL)
	245	return IP_NULL;
	246
	247	port = iokit_port_for_object( obj, IKOT_IOKIT_OBJECT );
9bccf70c A	248	if( port) {
	249	sendPort = ipc_port_make_send( port);
	250	iokit_release_port( port );
	251	} else
	252	sendPort = IP_NULL;
1c79356b A	253
	254	iokit_remove_reference( obj );
	255
9bccf70c	256	return( sendPort);
1c79356b A	257	}
	258
	259	MIGEXTERN ipc_port_t
	260	iokit_make_connect_port(
	261	io_object_t obj )
	262	{
	263	register ipc_port_t port;
9bccf70c	264	register ipc_port_t sendPort;
1c79356b A	265
	266	if( obj == NULL)
	267	return IP_NULL;
	268
	269	port = iokit_port_for_object( obj, IKOT_IOKIT_CONNECT );
9bccf70c A	270	if( port) {
	271	sendPort = ipc_port_make_send( port);
	272	iokit_release_port( port );
	273	} else
	274	sendPort = IP_NULL;
1c79356b A	275
	276	iokit_remove_reference( obj );
	277
9bccf70c	278	return( sendPort);
1c79356b A	279	}
1c79356b A	280
1c79356b A	281	int gIOKitPortCount;
	282
	283	EXTERN ipc_port_t
	284	iokit_alloc_object_port( io_object_t obj, ipc_kobject_type_t type )
	285	{
	286	ipc_port_t notify;
	287	ipc_port_t port;
	288
	289	do {
	290
	291	/* Allocate port, keeping a reference for it. */
	292	port = ipc_port_alloc_kernel();
	293	if( port == IP_NULL)
	294	continue;
	295
	296	/* set kobject & type */
	297	// iokit_add_reference( obj );
	298	ipc_kobject_set( port, (ipc_kobject_t) obj, type);
	299
	300	/* Request no-senders notifications on the port. */
	301	notify = ipc_port_make_sonce( port);
	302	ip_lock( port);
	303	ipc_port_nsrequest( port, 1, notify, &notify);
	304	assert( notify == IP_NULL);
	305	gIOKitPortCount++;
	306
	307	} while( FALSE);
	308
	309	return( port );
	310	}
	311
	312
	313	EXTERN kern_return_t
	314	iokit_destroy_object_port( ipc_port_t port )
	315	{
	316	ipc_kobject_set( port, IKO_NULL, IKOT_NONE);
	317
	318	// iokit_remove_reference( obj );
	319
	320	ipc_port_dealloc_kernel( port);
	321	gIOKitPortCount--;
	322
	323	return( KERN_SUCCESS);
	324	}
	325
43866e37 A	326	EXTERN kern_return_t
	327	iokit_switch_object_port( ipc_port_t port, io_object_t obj, ipc_kobject_type_t type )
	328	{
	329	ipc_kobject_set( port, (ipc_kobject_t) obj, type);
	330
	331	return( KERN_SUCCESS);
	332	}
	333
1c79356b A	334	EXTERN mach_port_name_t
	335	iokit_make_send_right( task_t task, io_object_t obj, ipc_kobject_type_t type )
	336	{
1c79356b	337	ipc_port_t port;
9bccf70c	338	ipc_port_t sendPort;
1c79356b A	339	mach_port_name_t name;
	340
	341	if( obj == NULL)
	342	return MACH_PORT_NULL;
	343
	344	port = iokit_port_for_object( obj, type );
9bccf70c A	345	if( port) {
	346	sendPort = ipc_port_make_send( port);
	347	iokit_release_port( port );
	348	} else
	349	sendPort = IP_NULL;
	350
	351	if (IP_VALID( sendPort )) {
	352	kern_return_t kr;
	353	kr = ipc_object_copyout( task->itk_space, (ipc_object_t) sendPort,
1c79356b	354	MACH_MSG_TYPE_PORT_SEND, TRUE, &name);
9bccf70c A	355	if ( kr != KERN_SUCCESS)
	356	name = MACH_PORT_NULL;
	357	} else if ( sendPort == IP_NULL)
	358	name = MACH_PORT_NULL;
	359	else if ( sendPort == IP_DEAD)
	360	name = MACH_PORT_DEAD;
1c79356b A	361
	362	iokit_remove_reference( obj );
	363
	364	return( name );
	365	}
	366
91447636 A	367	EXTERN kern_return_t
	368	iokit_mod_send_right( task_t task, mach_port_name_t name, mach_port_delta_t delta )
	369	{
	370	return (mach_port_mod_refs( task->itk_space, name, MACH_PORT_RIGHT_SEND, delta ));
	371	}
	372
1c79356b A	373	/*
	374	* Handle the No-More_Senders notification generated from a device port destroy.
	375	* Since there are no longer any tasks which hold a send right to this device
	376	* port a NMS notification has been generated.
	377	*/
	378
	379	static void
	380	iokit_no_senders( mach_no_senders_notification_t * notification )
	381	{
	382	ipc_port_t port;
	383	io_object_t obj = NULL;
2d21ac55	384	ipc_kobject_type_t type = IKOT_NONE;
9bccf70c	385	ipc_port_t notify;
1c79356b A	386
	387	port = (ipc_port_t) notification->not_header.msgh_remote_port;
	388
	389	// convert a port to io_object_t.
	390	if( IP_VALID(port)) {
	391	ip_lock(port);
	392	if( ip_active(port)) {
	393	obj = (io_object_t) port->ip_kobject;
	394	type = ip_kotype( port );
	395	if( (IKOT_IOKIT_OBJECT == type)
	396	\|\| (IKOT_IOKIT_CONNECT == type))
	397	iokit_add_reference( obj );
e3027f41	398	else
1c79356b A	399	obj = NULL;
	400	}
	401	ip_unlock(port);
	402
	403	if( obj ) {
9bccf70c A	404
	405	mach_port_mscount_t mscount = notification->not_count;
	406
	407	if( KERN_SUCCESS != iokit_client_died( obj, port, type, &mscount ))
	408	{
	409	/* Re-request no-senders notifications on the port. */
	410	notify = ipc_port_make_sonce( port);
	411	ip_lock( port);
	412	ipc_port_nsrequest( port, mscount + 1, notify, &notify);
	413	assert( notify == IP_NULL);
	414	}
1c79356b A	415	iokit_remove_reference( obj );
	416	}
	417	}
	418	}
	419
	420
	421	EXTERN
	422	boolean_t
	423	iokit_notify( mach_msg_header_t * msg )
	424	{
	425	switch (msg->msgh_id) {
	426	case MACH_NOTIFY_NO_SENDERS:
	427	iokit_no_senders((mach_no_senders_notification_t *) msg);
	428	return TRUE;
	429
	430	case MACH_NOTIFY_PORT_DELETED:
	431	case MACH_NOTIFY_PORT_DESTROYED:
	432	case MACH_NOTIFY_SEND_ONCE:
	433	case MACH_NOTIFY_DEAD_NAME:
	434	default:
2d21ac55	435	printf("iokit_notify: strange notification %d\n", msg->msgh_id);
1c79356b A	436	return FALSE;
	437	}
	438	}
	439
55e303ae A	440	/* need to create a pmap function to generalize */
55e303ae A	441	unsigned int IODefaultCacheBits(addr64_t pa)
de355530	442	{
b0d623f7	443	return(pmap_cache_attributes((ppnum_t)(pa >> PAGE_SHIFT)));
9bccf70c	444	}
9bccf70c	445
0c530ab8 A	446	kern_return_t IOMapPages(vm_map_t map, mach_vm_address_t va, mach_vm_address_t pa,
0c530ab8 A	447	mach_vm_size_t length, unsigned int options)
1c79356b	448	{
6d2010ae	449	vm_prot_t prot;
55e303ae	450	unsigned int flags;
6d2010ae	451	ppnum_t pagenum;
55e303ae	452	pmap_t pmap = map->pmap;
1c79356b A	453
	454	prot = (options & kIOMapReadOnly)
	455	? VM_PROT_READ : (VM_PROT_READ\|VM_PROT_WRITE);
	456
6d2010ae A	457	pagenum = (ppnum_t)atop_64(pa);
6d2010ae A	458
55e303ae A	459	switch(options & kIOMapCacheMask ) { /* What cache mode do we need? */
	460
	461	case kIOMapDefaultCache:
	462	default:
	463	flags = IODefaultCacheBits(pa);
	464	break;
	465
	466	case kIOMapInhibitCache:
	467	flags = VM_WIMG_IO;
	468	break;
	469
	470	case kIOMapWriteThruCache:
	471	flags = VM_WIMG_WTHRU;
	472	break;
	473
0c530ab8	474	case kIOMapWriteCombineCache:
55e303ae A	475	flags = VM_WIMG_WCOMB;
	476	break;
	477
	478	case kIOMapCopybackCache:
	479	flags = VM_WIMG_COPYBACK;
	480	break;
	481	}
1c79356b	482
6d2010ae A	483	pmap_set_cache_attributes(pagenum, flags);
	484
	485	vm_map_set_cache_attr(map, (vm_map_offset_t)va);
	486
	487
55e303ae	488	// Set up a block mapped area
6d2010ae	489	pmap_map_block(pmap, va, pagenum, (uint32_t) atop_64(round_page_64(length)), prot, 0, 0);
0c530ab8 A	490
	491	return( KERN_SUCCESS );
	492	}
	493
	494	kern_return_t IOUnmapPages(vm_map_t map, mach_vm_address_t va, mach_vm_size_t length)
	495	{
	496	pmap_t pmap = map->pmap;
	497
	498	pmap_remove(pmap, trunc_page_64(va), round_page_64(va + length));
	499
	500	return( KERN_SUCCESS );
	501	}
	502
2d21ac55 A	503	kern_return_t IOProtectCacheMode(vm_map_t __unused map, mach_vm_address_t __unused va,
2d21ac55 A	504	mach_vm_size_t __unused length, unsigned int __unused options)
0c530ab8 A	505	{
	506	mach_vm_size_t off;
	507	vm_prot_t prot;
	508	unsigned int flags;
	509	pmap_t pmap = map->pmap;
	510
	511	prot = (options & kIOMapReadOnly)
	512	? VM_PROT_READ : (VM_PROT_READ\|VM_PROT_WRITE);
	513
	514	switch (options & kIOMapCacheMask)
	515	{
2d21ac55	516	// what cache mode do we need?
0c530ab8 A	517	case kIOMapDefaultCache:
	518	default:
	519	return (KERN_INVALID_ARGUMENT);
	520
	521	case kIOMapInhibitCache:
	522	flags = VM_WIMG_IO;
	523	break;
	524
	525	case kIOMapWriteThruCache:
	526	flags = VM_WIMG_WTHRU;
	527	break;
4452a7af	528
0c530ab8 A	529	case kIOMapWriteCombineCache:
	530	flags = VM_WIMG_WCOMB;
	531	break;
	532
	533	case kIOMapCopybackCache:
	534	flags = VM_WIMG_COPYBACK;
	535	break;
	536	}
55e303ae	537
0c530ab8	538	// enter each page's physical address in the target map
55e303ae	539	for (off = 0; off < length; off += page_size)
0c530ab8 A	540	{
	541	ppnum_t ppnum = pmap_find_phys(pmap, va + off);
	542	if (ppnum)
	543	pmap_enter(pmap, va + off, ppnum, prot, flags, TRUE);
	544	}
55e303ae	545
0c530ab8	546	return (KERN_SUCCESS);
1c79356b A	547	}
1c79356b A	548
0c530ab8	549	ppnum_t IOGetLastPageNumber(void)
e3027f41	550	{
6d2010ae A	551	#if __i386__ \|\| __x86_64__
	552	ppnum_t lastPage, highest = 0;
	553	unsigned int idx;
	554
	555	for (idx = 0; idx < pmap_memory_region_count; idx++)
	556	{
	557	lastPage = pmap_memory_regions[idx].end - 1;
	558	if (lastPage > highest)
	559	highest = lastPage;
	560	}
	561	return (highest);
0c530ab8	562	#else
6d2010ae	563	#error unknown arch
0c530ab8	564	#endif
6601e61a	565	}
4452a7af	566
0c530ab8	567
1c79356b A	568	void IOGetTime( mach_timespec_t * clock_time);
	569	void IOGetTime( mach_timespec_t * clock_time)
	570	{
b0d623f7 A	571	clock_sec_t sec;
	572	clock_nsec_t nsec;
	573	clock_get_system_nanotime(&sec, &nsec);
	574	clock_time->tv_sec = (typeof(clock_time->tv_sec))sec;
	575	clock_time->tv_nsec = nsec;
1c79356b	576	}
0c530ab8	577